UMass Lowell Wiki : clickers : PRS FAQ's - edits

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:29:07 GMT

PRS FAQ's:

Basics:

How do faculty members begin to use PRS RF?
This information is included in the Getting Started Using Clickers section.

What is the current price for PRS RF?
Students purchase the PRS RF at the ~~Bookstore;~~ bookstore; the current price is $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

How are the RF Receivers powered and connected to the computer?
The PRS RF Receiver (also known as Hub) is connected to the computer via any USB port.

Where should I place the RF Receiver in the classroom?
The PRS RF system is a very portable system. The Receiver does not rely on line-of-sight transmission, so a special wall mount is not necessary. The only caveat regarding the placement of the RF Receiver is that it should not be located near anything made of metal, including the computer box. Metal serves as a shield to the RF signal. Otherwise, after the Receiver is connected to the computer, it can be placed anywhere in the room.

Is the PRS RF system RoHS-compliant?
Yes. The PRS RF system complies with the European Union’s strict environmental standards referred to as RoHS (Restriction of Hazardous Substances). PRS RF is compliant for the following six substances restricted by the RoHS regulations: Lead, Hexavalent Chromium, Mercury, Polybrominated Biphenyls, Polybrominated Biphenyl ethers, and Cadium.

Lack of Data Collision and Interference from Other Systems:

How many channels does the PRS RF system use and how does it find a channel?
The PRS RF system partitions the 2.4GHz frequency band into 78 separate channels with two PN code options, providing up to 156 channel combinations. Of these 156 channels, 26 are allocated to broadcasting class information from the Receiver. The 130 remaining channels are used to send data from the Clickers to the Receiver. The PRS RF Receiver selects channels dynamically. At startup, the Receiver performs a scan of the entire 2.4GHz spectrum and selects the channels that have the least amount of RF energy. This ensures that, in all likelihood, other products operating in the 2.4GHz band will be avoided. Channels 1-9 and A-D are the designated channels used by the RF Receiver to broadcast the class. PRS will display the assigned channel to provide a quick jump directly to that channel, so students can avoid having to wait for the scan to complete, which can take several minutes.

Can the RF Receiver detect conflicting RF Receivers in adjacent areas?
The PRS RF Receiver scans the entire environment and looks for energy on all channels in the 2.4GHz frequency band in order to avoid other PRS RF Receivers in nearby classrooms. The PRS RF Receiver also broadcasts a 16-bit Receiver ID as a unique identifier for the Clickers in the classroom, set by each faculty member.

How does PRS RF deal with interference from or with other radio sources?
PRS RF uses a DSSS (Direct Spread Spectrum Sequence) technology called Wireless USB that provides a high level of noise immunity from other systems. With DSSS, the signal is spread across the entire channel and reconstructed at the Receiver. By spreading the signal across the channel, PRS RF minimizes interference with other systems that might be in close proximity.

Classroom Techniques:

What types of questions are supported by the PRS RF Clickers?
The RF Clicker keys include the numbers 0 through 9; alpha characters A through E, T and F; a decimal point; and the minus (negative) sign. The entire alphabet can be accessed by pressing one of the alpha keys and scrolling up or down to the desired letter (not recommended). A forward slash can be entered into an answer by pressing the decimal point key twice. A space can be entered by pressing the decimal point key three times.
Question types supported by PRS RF include Single Answer Multiple Choice, Multiple Correct Multiple Choice, True/False, Answer Series, Numeric, and Survey. Lettered response choices or numbered response choices can be designated for both of the Multiple Choice question types, and for Answer Series and Survey question types.

How do students enter their responses on the Clicker and will they know when their responses have been received?
The PRS RF Clicker has an LCD display that is 2 lines by 16 characters. The keys pressed by the student appear on the first line of the display. The second line shows status messages returned by PRS. The response is sent when the Send/Enter key is pressed. A status message, such as Received, will appear on the second line of the Clicker display when the response has been processed.

Can the students change their responses?
The instructor can set the number of chances, from 1 to 99, a student has to answer a question. PRS tracks the number of times a student responds to a question. Only the last response is saved.

How are the results reviewed with the class?
When the question timer is stopped, or time runs out, a Response Chart is displayed. The Response Chart graphs the distribution of the responses to the question and the correct response (instructor’s choice). Students and instructors appreciate the instant feedback. It opens up opportunities for discussion and reveals areas of weakness in the level of comprehension of the material being covered.

Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of Response as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of Response can also be made for personally owned computers that are used for class preparation or teaching at the institution.

How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. There is a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint (PowerPoint 2008 is not currently supported). All of the PRS question types are supported by the PRS Add-in.

How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Response software. You can use this authoring tool not only to create questions in Response, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.

Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.

Can a question be created "on the fly" during a class?
Questions can be created by choosing Collect Responses and utilizing Impromptu Mode.

Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. Response can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.

Does the Response software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.

Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF hardware at this time. The Response software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide the ability to export data to other systems.

What technical support is available for Interwrite PRS RF?
Live phone support is available at 1-800-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via the online form . In addition, the Interwrite support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos.

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:25:07 GMT

PRS FAQ's:

Basics:

How do a faculty ~~memers~~ members begin ~~using~~ to use PRS RF?
This information is included in the Getting Started Using Clickers section.

What is the current price for PRS RF?
~~The Bookstore currently sells~~ Students purchase the PRS RF at the Bookstore; the current price is $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:20:58 GMT

PRS FAQ's:

Basics:

How do a faculty memers begin using PRS RF?
This information included in the Getting Started Using Clickers section.

What is the current price for PRS RF?
The Bookstore currently sells PRS RF at $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:20:25 GMT

PRS FAQ's:

Basics:

How do a faculty memers begin using PRS RF?
This information included in the ~~"Why Use Clickers"~~ Getting Started Using Clickers section.

What is the current price for PRS RF?
The Bookstore currently sells PRS RF at $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:19:11 GMT

PRS FAQ's:

Basics:

How ~~does~~ do a faculty memers begin using PRS RF?
This information included in the "Why Use Clickers" section.

What is the current price for PRS RF?
The Bookstore currently sells PRS RF at $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:17:23 GMT

PRS FAQ's:

Basics:

How does a faculty begin using PRS RF?

What is the current price for PRS RF?
The Bookstore currently sells PRS RF at $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

PRS FAQ's

donna_mellen — Tue, 15 Sep 2009 20:15:46 GMT

PRS FAQ's:

Basics:

What is the current price for PRS RF?
The Bookstore currently sells PRS RF at $50 new and $37.50 used.

Will the bookstore buy back a used PRS RF?
Yes, if PRS RF is in good working order the bookstore will buy it back for $25.

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. Student names would have to be manually associated with the Student ID or a student roster may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

PRS FAQ's

donna_mellen — Tue, 04 Aug 2009 16:21:13 GMT

PRS FAQ's:

Basics:

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. ~~Anonymous mode is set when the RF Class is started.~~

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. A Student names would have to be manually associated with the Student ID or a student roster ~~can also be populated in advance.~~ may be imported from ISIS.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of ~~PRS~~ Response as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of ~~PRS~~ Response can also be made for personally owned computers that are used for class preparation or teaching at the institution.

How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. There is a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint (PowerPoint 2008 is not currently supported). All of the PRS question types are supported by the PRS Add-in.

How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the ~~Interwrite PRS~~ Response software. You can use this authoring tool not only to create questions in ~~PRS,~~ Response, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.

Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.

Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate. Questions can also be created by choosing Collect Responses and utilizing Impromptu Mode.

Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. ~~InterWrite PRS~~ Response can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.

Does the ~~Interwrite PRS~~ Response software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.

Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF hardware at this time. The ~~Interwrite PRS~~ Response software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide ~~a very broad standards-based approach that supports the exchange of PRS~~ the ability to export data ~~with numerous course management systems and grading applications.~~ ~~In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with the hardware.~~ to other systems.

What technical support is available for Interwrite PRS RF?
Live phone support is available at 1-800-856-0732 or or 1-480-443-2214 (outside the US). Or, you can submit your question via the online form . In addition, the Interwrite support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos.

PRS FAQ's

donna_mellen — Thu, 11 Dec 2008 21:53:08 GMT

PRS FAQ's:

Basics:

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. Anonymous mode is set when the RF Class is started.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. A roster can also be populated in advance.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of PRS as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of PRS can also be made for personally owned computers that are used for class preparation or teaching at the institution.

How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. ~~We have developed~~ There is a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in ~~PowerPoint.~~ PowerPoint (PowerPoint 2008 is not currently supported). All of the PRS question types are supported by the PRS Add-in.

How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Interwrite PRS software. You can use this authoring tool not only to create questions in PRS, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.

Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.

Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate. Questions can also be created by choosing Collect Responses and utilizing Impromptu Mode.

Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. InterWrite PRS can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.

Does the Interwrite PRS software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.

Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF hardware at this time. The Interwrite PRS software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide a very broad standards-based approach that supports the exchange of PRS data with numerous course management systems and grading applications.
In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with the hardware.

What technical support is available for Interwrite PRS RF?
Live phone support is available at 1-800-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via the online form . In addition, the Interwrite support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos.

PRS FAQ's

donna_mellen — Thu, 11 Sep 2008 17:37:01 GMT

PRS FAQ's:

Basics:

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. Anonymous mode is set when the RF Class is started.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. A roster can also be populated in advance.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

Lack of Data Collision and Interference from Other Systems:

Classroom Techniques:

Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of PRS as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of PRS can also be made for personally owned computers that are used for class preparation or teaching at the institution.

How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. We have developed a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint. All of the PRS question types are supported by the PRS Add-in.

How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Interwrite PRS software. You can use this authoring tool not only to create questions in PRS, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.

Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.

Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate.

Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. InterWrite PRS can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.

Does the Interwrite PRS software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.

Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF hardware at this time. The Interwrite PRS software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide a very broad standards-based approach that supports the exchange of PRS data with numerous course management systems and grading applications.
In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with ~~our~~ the hardware.

What technical support is available for Interwrite PRS RF?
Live phone support is available at 1-800-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via ~~our~~ the online form . In addition, ~~our~~ the Interwrite support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training ~~videos and the Interwrite PRS User’s Guide.~~ videos.

PRS FAQ's

donna_mellen — Mon, 07 Jul 2008 20:01:57 GMT

PRS FAQ's:

Basics:

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.

Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. Anonymous mode is set when the RF Class is started.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. A roster can also be populated in advance.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

How are the RF Receivers powered and connected to the computer?
The PRS RF Receiver ~~is attached~~ (also known as Hub) is connected to the computer via ~~the provided 15-foot~~ any USB cable and requires a power supply. The power supply provided is an international power supply and includes power supply adapters for various countries. You will need to install the power supply adapter used in your country in order to use the power supply. ~~How can I add additional RF Receivers?~~ ~~Up to 4 Receivers can be used with one PRS system. Each Receiver requires its own USB connection and power supply.~~ port.

Where should I place the RF Receiver in the classroom?
The PRS RF system is a very portable system. The Receiver does not rely on line-of-sight transmission, so a special wall mount is not necessary. The only caveat regarding the placement of the RF Receiver is that it should not be located near anything made of metal, including the computer box. Metal serves as a shield to the RF signal. Otherwise, after the Receiver is connected to the computer, it can be placed anywhere in the room.

Is the PRS RF system RoHS-compliant?
Yes. The PRS RF system complies with the European Union’s strict environmental standards referred to as RoHS (Restriction of Hazardous Substances). PRS RF is compliant for the following six substances restricted by the RoHS regulations: Lead, Hexavalent Chromium, Mercury, Polybrominated Biphenyls, Polybrominated Biphenyl ethers, and Cadium.

Lack of Data Collision and Interference from Other Systems:

How many channels does the PRS RF system use and how does it find a channel?
The PRS RF system partitions the 2.4GHz frequency band into 78 separate channels with two PN code options, providing up to 156 channel combinations. Of these 156 channels, 26 are allocated to broadcasting class information from the Receiver. The 130 remaining channels are used to send data from the Clickers to the Receiver. The PRS RF Receiver selects channels dynamically. At startup, the Receiver performs a scan of the entire 2.4GHz spectrum and selects the channels that have the least amount of RF energy. This ensures that, in all likelihood, other products operating in the 2.4GHz band will be avoided. Channels 1-9 and A-D are the designated channels used by the RF Receiver to broadcast the class. PRS will display the assigned channel to provide a quick jump directly to that channel, so students can avoid having to wait for the scan to complete, which can take several minutes.

Can the RF Receiver detect conflicting RF Receivers in adjacent areas?
The PRS RF Receiver scans the entire environment and looks for energy on all channels in the 2.4GHz frequency band in order to avoid other PRS RF Receivers in nearby classrooms. The PRS RF Receiver also broadcasts a 16-bit Receiver ID as a unique identifier for the Clickers in the ~~classroom.~~ classroom, set by each faculty member.

How does PRS RF deal with interference from or with other radio sources?
PRS RF uses a DSSS (Direct Spread Spectrum Sequence) technology called Wireless USB that provides a high level of noise immunity from other systems. With DSSS, the signal is spread across the entire channel and reconstructed at the Receiver. By spreading the signal across the channel, PRS RF minimizes interference with other systems that might be in close proximity.

Classroom Techniques:

What types of questions are supported by the PRS RF Clickers?
The RF Clicker keys include the numbers 0 through 9; alpha characters A through E, T and F; a decimal point; and the minus (negative) sign. The entire alphabet can be accessed by pressing one of the alpha keys and scrolling up or down to the desired ~~letter.~~ letter (not recommended). A forward slash can be entered into an answer by pressing the decimal point key twice. A space can be entered by pressing the decimal point key three times.
Question types supported by PRS RF include Single Answer Multiple Choice, Multiple Correct Multiple Choice, True/False, Answer Series, Numeric, and Survey. Lettered response choices or numbered response choices can be designated for both of the Multiple Choice question types, and for Answer Series and Survey question types.

How do students enter their responses on the Clicker and will they know when their responses have been received?
The PRS RF Clicker has an LCD display that is 2 lines by 16 characters. The keys pressed by the student appear on the first line of the display. The second line shows status messages returned by PRS. The response is sent when the Send/Enter key is pressed. A status message, such as Received, will appear on the second line of the Clicker display when the response has been processed.

Can the students change their responses?
The instructor can set the number of chances, from 1 to 99, a student has to answer a question. PRS tracks the number of times a student responds to a question. Only the last response is saved.

How are the results reviewed with the class?
When the question timer is stopped, or time runs out, a Response Chart is displayed. The Response Chart graphs the distribution of the responses to the question and the correct response (instructor’s choice). Students and instructors appreciate the instant feedback. It opens up opportunities for discussion and reveals areas of weakness in the level of comprehension of the material being covered.
~~How do I review the results of a session at a later time?~~ The Interwrite PRS software has a “Review Session” feature that allows you to go over the results of a session at any time. Session results, the students’ responses, are saved in a comma-delimited, CSV file, which can be viewed in a variety of applications, including Microsoft Excel, Notepad, and Word.

Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of PRS as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of PRS can also be made for personally owned computers that are used for class preparation or teaching at the ~~purchasing~~ institution.
~~Does the latest version of the PRS software work with both IR and RF Clickers?~~ Yes. The PRS software labeled version 4 works with both IR and RF Clickers. When you set up your PRS class, you will specify the type of Clickers that will be used in the class—RF only, IR only, or both RF and IR. If both RF and IR Clickers are going to be used in the class, you will need to install both an IR Receiver and an RF Receiver. ~~How can I upgrade my PRS software?~~ ~~Current users can download the latest software from our~~ ~~downloads page~~ .
How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. We have developed a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint. All of the PRS question types are supported by the PRS Add-in.
~~Can questions, student responses and grades be exported to a data file for use in Microsoft® Excel or one of the course management systems, such as WebCT or Blackboard?~~ PRS response data are saved in an ASCII, comma-delimited .CSV format. This is an Excel file format that can be imported into a number of grade book applications. PRS questions are saved in an industry-standard .XML format.
How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Interwrite PRS software. You can use this authoring tool not only to create questions in PRS, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.

Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.

Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate. ~~You can use pen-based tools, such as the Interwrite Pad, to create freehand questions in the graphic window section of the authoring tool.~~

Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. InterWrite PRS can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.

Does the Interwrite PRS software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.

Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF ~~and IR~~ hardware at this time. The Interwrite PRS software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide a very broad standards-based approach that supports the exchange of PRS data with numerous course management systems and grading applications.
In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with our hardware.

What technical support is available for Interwrite PRS RF?
Live phone support is available at ~~1-8000-856-0732~~ 1-800-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via our online form . In addition, our support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos and the Interwrite PRS User’s Guide.

PRS FAQ's

donna_mellen — Mon, 07 Jul 2008 19:45:45 GMT

PRS FAQ's:

Basics:

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.

How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.

Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.
~~Can the RF Clickers be set up as Loaners?~~ Yes. The PRS RF Clickers are configurable and can be set up as Loaners, which allows them to be shared with other students. The RF Clicker configured as a Loaner will prompt the student to enter his or her Student ID each time the student joins an RF Class. The Student ID is purged from the Clicker’s memory when it is turned off. With the student-owned model, the Student ID is entered just once and is permanently stored in the Clicker’s memory.
Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. Anonymous mode is set when the RF Class is started.

Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. In the model where the student owns the Clicker, this relationship remains a constant. In the model where the Clicker is loaned to the student for the class, the association between the Student ID and the Clicker ID is temporary and exists only for the duration of the Session. When the Clickers are shared, the Clicker ID will be associated with different Student IDs as different students use them. A roster can also be populated in advance.

What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation:

How are the RF Receivers powered and connected to the computer?
The PRS RF Receiver is attached to the computer via the provided 15-foot USB cable and requires a power supply. The power supply provided is an international power supply and includes power supply adapters for various countries. You will need to install the power supply adapter used in your country in order to use the power supply.
How can I add additional RF Receivers?
Up to 4 Receivers can be used with one PRS system. Each Receiver requires its own USB connection and power supply.
Where should I place the RF Receiver in the classroom?
The PRS RF system is a very portable system. The Receiver does not rely on line-of-sight transmission, so a special wall mount is not necessary. The only caveat regarding the placement of the RF Receiver is that it should not be located near anything made of metal, including the computer box. Metal serves as a shield to the RF signal. Otherwise, after the Receiver is connected to the computer, it can be placed anywhere in the room.
Is the PRS RF system RoHS-compliant?
Yes. The PRS RF system complies with the European Union’s strict environmental standards referred to as RoHS (Restriction of Hazardous Substances). PRS RF is compliant for the following six substances restricted by the RoHS regulations: Lead, Hexavalent Chromium, Mercury, Polybrominated Biphenyls, Polybrominated Biphenyl ethers, and Cadium.

Lack of Data Collision and Interference from Other Systems:

How many channels does the PRS RF system use and how does it find a channel?
The PRS RF system partitions the 2.4GHz frequency band into 78 separate channels with two PN code options, providing up to 156 channel combinations. Of these 156 channels, 26 are allocated to broadcasting class information from the Receiver. The 130 remaining channels are used to send data from the Clickers to the Receiver. The PRS RF Receiver selects channels dynamically. At startup, the Receiver performs a scan of the entire 2.4GHz spectrum and selects the channels that have the least amount of RF energy. This ensures that, in all likelihood, other products operating in the 2.4GHz band will be avoided. Channels 1-9 and A-D are the designated channels used by the RF Receiver to broadcast the class. PRS will display the assigned channel to provide a quick jump directly to that channel, so students can avoid having to wait for the scan to complete, which can take several minutes.
Can the RF Receiver detect conflicting RF Receivers in adjacent areas?
The PRS RF Receiver scans the entire environment and looks for energy on all channels in the 2.4GHz frequency band in order to avoid other PRS RF Receivers in nearby classrooms. The PRS RF Receiver also broadcasts a 16-bit Receiver ID as a unique identifier for the Clickers in the classroom.
How does PRS RF deal with interference from or with other radio sources?
PRS RF uses a DSSS (Direct Spread Spectrum Sequence) technology called Wireless USB that provides a high level of noise immunity from other systems. With DSSS, the signal is spread across the entire channel and reconstructed at the Receiver. By spreading the signal across the channel, PRS RF minimizes interference with other systems that might be in close proximity.

Classroom Techniques:

What types of questions are supported by the PRS RF Clickers?
The RF Clicker keys include the numbers 0 through 9; alpha characters A through E, T and F; a decimal point; and the minus (negative) sign. The entire alphabet can be accessed by pressing one of the alpha keys and scrolling up or down to the desired letter. A forward slash can be entered into an answer by pressing the decimal point key twice. A space can be entered by pressing the decimal point key three times.
Question types supported by PRS RF include Single Answer Multiple Choice, Multiple Correct Multiple Choice, True/False, Answer Series, Numeric, and Survey. Lettered response choices or numbered response choices can be designated for both of the Multiple Choice question types, and for Answer Series and Survey question types.
How do students enter their responses on the Clicker and will they know when their responses have been received?
The PRS RF Clicker has an LCD display that is 2 lines by 16 characters. The keys pressed by the student appear on the first line of the display. The second line shows status messages returned by PRS. The response is sent when the Send/Enter key is pressed. A status message, such as Received, will appear on the second line of the Clicker display when the response has been processed.
Can the students change their responses?
The instructor can set the number of chances, from 1 to 99, a student has to answer a question. PRS tracks the number of times a student responds to a question. Only the last response is saved.
How are the results reviewed with the class?
When the question timer is stopped, or time runs out, a Response Chart is displayed. The Response Chart graphs the distribution of the responses to the question and the correct response (instructor’s choice). Students and instructors appreciate the instant feedback. It opens up opportunities for discussion and reveals areas of weakness in the level of comprehension of the material being covered.
How do I review the results of a session at a later time?
The Interwrite PRS software has a “Review Session” feature that allows you to go over the results of a session at any time. Session results, the students’ responses, are saved in a comma-delimited, CSV file, which can be viewed in a variety of applications, including Microsoft Excel, Notepad, and Word.

Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of PRS as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of PRS can also be made for personally owned computers that are used for class preparation or teaching at the purchasing institution.
Does the latest version of the PRS software work with both IR and RF Clickers?
Yes. The PRS software labeled version 4 works with both IR and RF Clickers. When you set up your PRS class, you will specify the type of Clickers that will be used in the class—RF only, IR only, or both RF and IR. If both RF and IR Clickers are going to be used in the class, you will need to install both an IR Receiver and an RF Receiver.
How can I upgrade my PRS software?
Current users can download the latest software from our downloads page .
How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. We have developed a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint. All of the PRS question types are supported by the PRS Add-in.
Can questions, student responses and grades be exported to a data file for use in Microsoft® Excel or one of the course management systems, such as WebCT or Blackboard?
PRS response data are saved in an ASCII, comma-delimited .CSV format. This is an Excel file format that can be imported into a number of grade book applications. PRS questions are saved in an industry-standard .XML format.
How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Interwrite PRS software. You can use this authoring tool not only to create questions in PRS, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.
Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.
Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate. You can use pen-based tools, such as the Interwrite Pad, to create freehand questions in the graphic window section of the authoring tool.
Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. InterWrite PRS can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.
Does the Interwrite PRS software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.
Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF and IR hardware at this time. The Interwrite PRS software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide a very broad standards-based approach that supports the exchange of PRS data with numerous course management systems and grading applications.
In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with our hardware.
What technical support is available for Interwrite PRS RF?
Live phone support is available at 1-8000-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via our online form . In addition, our support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos and the Interwrite PRS User’s Guide.

PRS FAQ's

donna_mellen — Mon, 07 Jul 2008 19:42:15 GMT

PRS FAQ's:

Basics Basics:

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.
How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.
Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.
Can the RF Clickers be set up as Loaners?
Yes. The PRS RF Clickers are configurable and can be set up as Loaners, which allows them to be shared with other students. The RF Clicker configured as a Loaner will prompt the student to enter his or her Student ID each time the student joins an RF Class. The Student ID is purged from the Clicker’s memory when it is turned off. With the student-owned model, the Student ID is entered just once and is permanently stored in the Clicker’s memory.
Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. Anonymous mode is set when the RF Class is started.
Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. In the model where the student owns the Clicker, this relationship remains a constant. In the model where the Clicker is loaned to the student for the class, the association between the Student ID and the Clicker ID is temporary and exists only for the duration of the Session. When the Clickers are shared, the Clicker ID will be associated with different Student IDs as different students use them.
What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation Installation:

Lack of Data Collision and Interference from Other Systems Systems:

How many channels does the PRS RF system use and how does it find a channel?
The PRS RF system partitions the 2.4GHz frequency band into 78 separate channels with two PN code options, providing up to 156 channel combinations. Of these 156 channels, 26 are allocated to broadcasting class information from the Receiver. The 130 remaining channels are used to send data from the Clickers to the Receiver. The PRS RF Receiver selects channels dynamically. At startup, the Receiver performs a scan of the entire 2.4GHz spectrum and selects the channels that have the least amount of RF energy. This ensures that, in all likelihood, other products operating in the 2.4GHz band will be avoided. Channels 1-9 and A-D are the designated channels used by the RF Receiver to broadcast the class. PRS will display the assigned channel to provide a quick jump directly to that channel, so students can avoid having to wait for the scan to complete, which can take several minutes.
Can the RF Receiver detect conflicting RF Receivers in adjacent areas?
The PRS RF Receiver scans the entire environment and looks for energy on all channels in the 2.4GHz frequency band in order to avoid other PRS RF Receivers in nearby classrooms. The PRS RF Receiver also broadcasts a 16-bit Receiver ID as a unique identifier for the Clickers in the classroom.
How does PRS RF deal with interference from or with other radio sources?
PRS RF uses a DSSS (Direct Spread Spectrum Sequence) technology called Wireless USB that provides a high level of noise immunity from other systems. With DSSS, the signal is spread across the entire channel and reconstructed at the Receiver. By spreading the signal across the channel, PRS RF minimizes interference with other systems that might be in close proximity.

Classroom Techniques Techniques:

What types of questions are supported by the PRS RF Clickers?
The RF Clicker keys include the numbers 0 through 9; alpha characters A through E, T and F; a decimal point; and the minus (negative) sign. The entire alphabet can be accessed by pressing one of the alpha keys and scrolling up or down to the desired letter. A forward slash can be entered into an answer by pressing the decimal point key twice. A space can be entered by pressing the decimal point key three times.
Question types supported by PRS RF include Single Answer Multiple Choice, Multiple Correct Multiple Choice, True/False, Answer Series, Numeric, and Survey. Lettered response choices or numbered response choices can be designated for both of the Multiple Choice question types, and for Answer Series and Survey question types.
How do students enter their responses on the Clicker and will they know when their responses have been received?
The PRS RF Clicker has an LCD display that is 2 lines by 16 characters. The keys pressed by the student appear on the first line of the display. The second line shows status messages returned by PRS. The response is sent when the Send/Enter key is pressed. A status message, such as Received, will appear on the second line of the Clicker display when the response has been processed.
Can the students change their responses?
The instructor can set the number of chances, from 1 to 99, a student has to answer a question. PRS tracks the number of times a student responds to a question. Only the last response is saved.
How are the results reviewed with the class?
When the question timer is stopped, or time runs out, a Response Chart is displayed. The Response Chart graphs the distribution of the responses to the question and the correct response (instructor’s choice). Students and instructors appreciate the instant feedback. It opens up opportunities for discussion and reveals areas of weakness in the level of comprehension of the material being covered.
How do I review the results of a session at a later time?
The Interwrite PRS software has a “Review Session” feature that allows you to go over the results of a session at any time. Session results, the students’ responses, are saved in a comma-delimited, CSV file, which can be viewed in a variety of applications, including Microsoft Excel, Notepad, and Word.

Software Software:

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of PRS as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of PRS can also be made for personally owned computers that are used for class preparation or teaching at the purchasing institution.
Does the latest version of the PRS software work with both IR and RF Clickers?
Yes. The PRS software labeled version 4 works with both IR and RF Clickers. When you set up your PRS class, you will specify the type of Clickers that will be used in the class—RF only, IR only, or both RF and IR. If both RF and IR Clickers are going to be used in the class, you will need to install both an IR Receiver and an RF Receiver.
How can I upgrade my PRS software?
Current users can download the latest software from our downloads page .
How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. We have developed a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint. All of the PRS question types are supported by the PRS Add-in.
Can questions, student responses and grades be exported to a data file for use in Microsoft® Excel or one of the course management systems, such as WebCT or Blackboard?
PRS response data are saved in an ASCII, comma-delimited .CSV format. This is an Excel file format that can be imported into a number of grade book applications. PRS questions are saved in an industry-standard .XML format.
How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Interwrite PRS software. You can use this authoring tool not only to create questions in PRS, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.
Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.
Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate. You can use pen-based tools, such as the Interwrite Pad, to create freehand questions in the graphic window section of the authoring tool.
Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. InterWrite PRS can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.
Does the Interwrite PRS software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.
Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF and IR hardware at this time. The Interwrite PRS software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide a very broad standards-based approach that supports the exchange of PRS data with numerous course management systems and grading applications.
In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with our hardware.
What technical support is available for Interwrite PRS RF?
Live phone support is available at ~~1-800-856-0732~~ 1-8000-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via our online form . In addition, our support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos and the Interwrite PRS User’s Guide.

PRS FAQ's

donna_mellen — Mon, 07 Jul 2008 19:38:20 GMT

PRS FAQ's:

Basics

What is the technology used for signal transmission?
The PRS RF system operates in the 2.4GHz frequency range and uses a Direct Spread Spectrum Sequence (DSSS) technology. Range for the system in Free Space is 150 feet.
How many students (Clickers) can participate in a session?
There can be 2047 Clickers used per Receiver. Up to 4 Receivers can be used concurrently, making the theoretical limit for the system 8,188 Clickers.
Are there recurring registration charges for students?
No, there are no ongoing registration fees required of the school or the students to continue using the system. The only cost of the PRS RF system is the hardware. The initial cost is up front—purchasing the system. The only recurring costs are for replacement batteries.
Can the RF Clickers be set up as Loaners?
Yes. The PRS RF Clickers are configurable and can be set up as Loaners, which allows them to be shared with other students. The RF Clicker configured as a Loaner will prompt the student to enter his or her Student ID each time the student joins an RF Class. The Student ID is purged from the Clicker’s memory when it is turned off. With the student-owned model, the Student ID is entered just once and is permanently stored in the Clicker’s memory.
Can the PRS RF System be used in Anonymous mode?
Yes. Anonymous mode gives the instructor the option of collecting students’ responses without the associated Student ID that identifies the student. Anonymous mode is set when the RF Class is started.
Do I need to manually create a roster?
No. PRS RF provides the ability to easily and reliably associate a specific student in the class with a specific Clicker. Using this information, the class roster is then automatically created. The Clicker ID is captured with the Student ID at the time the student joins the class and participates in a PRS Session. As such, a direct and immediate association is established between the student and the Clicker. In the model where the student owns the Clicker, this relationship remains a constant. In the model where the Clicker is loaned to the student for the class, the association between the Student ID and the Clicker ID is temporary and exists only for the duration of the Session. When the Clickers are shared, the Clicker ID will be associated with different Student IDs as different students use them.
What batteries do the RF Clickers use and how long do they last?
The PRS RF Clicker uses three (3) AAA batteries – standard alkaline batteries. One set of batteries is included with the purchase. The batteries are installed in the battery compartment, the cover of which is secured with a screw. The average life expectancy of the three AAA batteries in the PRS RF Clicker is estimated at 26 weeks with typical use. Variations in battery life will occur based on the unit’s sleep time setting and on how often Self Paced Test and Homework modes, which typically consume more power, are used. The PRS RF Clicker has a battery level indicator that displays at power up. A diagnostic battery display in the Setup Menu provides an indication of the percentage of battery life remaining. When the battery gets very low, the PRS RF Clicker will display a “Low Battery” warning.

Hardware and Installation

Lack of Data Collision and Interference from Other Systems

How many channels does the PRS RF system use and how does it find a channel?
The PRS RF system partitions the 2.4GHz frequency band into 78 separate channels with two PN code options, providing up to 156 channel combinations. Of these 156 channels, 26 are allocated to broadcasting class information from the Receiver. The 130 remaining channels are used to send data from the Clickers to the Receiver. The PRS RF Receiver selects channels dynamically. At startup, the Receiver performs a scan of the entire 2.4GHz spectrum and selects the channels that have the least amount of RF energy. This ensures that, in all likelihood, other products operating in the 2.4GHz band will be avoided. Channels 1-9 and A-D are the designated channels used by the RF Receiver to broadcast the class. PRS will display the assigned channel to provide a quick jump directly to that channel, so students can avoid having to wait for the scan to complete, which can take several minutes.
Can the RF Receiver detect conflicting RF Receivers in adjacent areas?
The PRS RF Receiver scans the entire environment and looks for energy on all channels in the 2.4GHz frequency band in order to avoid other PRS RF Receivers in nearby classrooms. The PRS RF Receiver also broadcasts a 16-bit Receiver ID as a unique identifier for the Clickers in the classroom.
How does PRS RF deal with interference from or with other radio sources?
PRS RF uses a DSSS (Direct Spread Spectrum Sequence) technology called Wireless USB that provides a high level of noise immunity from other systems. With DSSS, the signal is spread across the entire channel and reconstructed at the Receiver. By spreading the signal across the channel, PRS RF minimizes interference with other systems that might be in close proximity.

Classroom Techniques

What types of questions are supported by the PRS RF Clickers?
The RF Clicker keys include the numbers 0 through 9; alpha characters A through E, T and F; a decimal point; and the minus (negative) sign. The entire alphabet can be accessed by pressing one of the alpha keys and scrolling up or down to the desired letter. A forward slash can be entered into an answer by pressing the decimal point key twice. A space can be entered by pressing the decimal point key three times.
Question types supported by PRS RF include Single Answer Multiple Choice, Multiple Correct Multiple Choice, True/False, Answer Series, Numeric, and Survey. Lettered response choices or numbered response choices can be designated for both of the Multiple Choice question types, and for Answer Series and Survey question types.
How do students enter their responses on the Clicker and will they know when their responses have been received?
The PRS RF Clicker has an LCD display that is 2 lines by 16 characters. The keys pressed by the student appear on the first line of the display. The second line shows status messages returned by PRS. The response is sent when the Send/Enter key is pressed. A status message, such as Received, will appear on the second line of the Clicker display when the response has been processed.
Can the students change their responses?
The instructor can set the number of chances, from 1 to 99, a student has to answer a question. PRS tracks the number of times a student responds to a question. Only the last response is saved.
How are the results reviewed with the class?
When the question timer is stopped, or time runs out, a Response Chart is displayed. The Response Chart graphs the distribution of the responses to the question and the correct response (instructor’s choice). Students and instructors appreciate the instant feedback. It opens up opportunities for discussion and reveals areas of weakness in the level of comprehension of the material being covered.
How do I review the results of a session at a later time?
The Interwrite PRS software has a “Review Session” feature that allows you to go over the results of a session at any time. Session results, the students’ responses, are saved in a comma-delimited, CSV file, which can be viewed in a variety of applications, including Microsoft Excel, Notepad, and Word.

Software

What are the software license restrictions?
When PRS is purchased, the software is site-licensed to the institution purchasing it for use with the PRS hardware. This means that the institution has the right to make as many copies of PRS as needed for use on the institution’s computers that are connected to the PRS hardware. Copies of PRS can also be made for personally owned computers that are used for class preparation or teaching at the purchasing institution.
Does the latest version of the PRS software work with both IR and RF Clickers?
Yes. The PRS software labeled version 4 works with both IR and RF Clickers. When you set up your PRS class, you will specify the type of Clickers that will be used in the class—RF only, IR only, or both RF and IR. If both RF and IR Clickers are going to be used in the class, you will need to install both an IR Receiver and an RF Receiver.
How can I upgrade my PRS software?
Current users can download the latest software from our downloads page .
How can I use my Microsoft® PowerPoint files with PRS?
Any slide in a PowerPoint Slide Show can be turned into a PRS Question Slide. We have developed a PRS PowerPoint Add-in for both Mac and Windows users that makes it easy to set up PRS question slides in PowerPoint. All of the PRS question types are supported by the PRS Add-in.
Can questions, student responses and grades be exported to a data file for use in Microsoft® Excel or one of the course management systems, such as WebCT or Blackboard?
PRS response data are saved in an ASCII, comma-delimited .CSV format. This is an Excel file format that can be imported into a number of grade book applications. PRS questions are saved in an industry-standard .XML format.
How do I create questions using PRS?
Questions can be easily created in several ways. A question authoring tool is included in the Interwrite PRS software. You can use this authoring tool not only to create questions in PRS, but to insert a new question or insert an existing question from your lesson library. The PowerPoint Add-in module provides a way to quickly and easily turn any Microsoft® PowerPoint slide into a PRS question slide. The XML import function makes it possible to import prepared questions, responses and correct answers provided by book publishers into your Lesson. And finally, ad hoc questions can be created “on the fly” during a PRS Session.
Can I import graphics into my questions?
Yes, the PRS software supports standard graphic formats such as .jpeg, .png, and .gif.
Can a question be created "on the fly" during a class?
Questions can be created “on-the-fly” during a session by using either the Insert New Question or the Insert Existing Question function. This activates the PRS question authoring tool, which is used to compose your question and response choices, if appropriate. You can use pen-based tools, such as the Interwrite Pad, to create freehand questions in the graphic window section of the authoring tool.
Can the results of a question be displayed “on the spot”?
The software provides the option to automatically show a graph of the audience responses as soon as the question timer expires or is stopped. Other option settings allow the instructor to show the correct answer for each question or hide the correct answer until after all of the questions have been presented. InterWrite PRS can be run in a No Lesson mode, where the questions originate in a separate application, or are written on a blackboard or displayed on an overhead projector. Even in No Lesson mode, responses are automatically charted and displayed.
Does the Interwrite PRS software have a “summary” feature that allows the instructor to immediately display a question’s results for class discussion?
Yes. Responses can be displayed in a graph format allowing the instructor and students to see the distribution of responses. A “% Correct” value can be selected for each question’s responses, providing additional information for the instructor. The correct answer can be toggled on or off – depending on the instructor’s teaching style. At the end of a question, the instructor can view the details of the responses – who responded and their individual responses – in a tabular format.
Is the Interwrite PRS system software and hardware compatible with other Clickers or Receivers? With other software applications?
The Interwrite PRS software is proprietary and operates only with the Interwrite PRS RF and IR hardware at this time. The Interwrite PRS software is provided at no additional charge to Interwrite PRS hardware users. PRS employs XML and CSV file formats to provide a very broad standards-based approach that supports the exchange of PRS data with numerous course management systems and grading applications.
In addition, Interwrite Learning publishes a PRS API that makes it possible for software developers to interface their applications with our hardware.
What technical support is available for Interwrite PRS RF?
Live phone support is available at 1-800-856-0732 or 1-480-443-2214 (outside the US). Or, you can submit your question via our online form . In addition, our support site maintains a Support Forum , where you can discuss your PRS questions and issues with fellow PRS users and access training videos and the Interwrite PRS User’s Guide.