FBR-5FKRSPBX-2Audience Response Keypad

Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 User Manual Page 1 of 2 File Name: STDMAN.DOC Date: 07/13/01 Reply® Response Keypad Model CRS1200 Users Manual Purpose of the Keypad The Reply® Model CRS1200 Keypad is a wireless portable device that makes it possible for a number of people to participate interactively in a class situation or group meeting. The product accomplishes this by sending keypad switch closure information from the keypad to a base unit which employs a wireless transceiver to receive the keypad signal. These signals are processed by the base unit and delivered to a host computer which allows the responses to be stored, analyzed and if desired displayed on a video projector for feedback to the group showing the results of their participation. Description of the Keypad The Reply Model CRS1200 Keypad is housed in a plastic enclosure similar in appearance to a calculator. It is powered by an internal 9 volt alkaline battery with no external wires or electrical connections. The keypad uses a membrane switch panel for numeric entry and a 7 segment LED display for entry display to the user. The keypad uses a synthesized transceiver compliant with FCC Part 15 Subpart B and C. Using the Keypad To use a keypad a corresponding channel base unit must be active and under control of an application running on a personal computer. This is usually the responsibility of the instructor or meeting facilitator. The instructor or meeting facilitator uses a program running on a personal computer to determine when responses from the keypads are to be received. Typically this program will deliver a number of informational screens on a video projection system and then will present a question screen. The participants with keypads will then be instructed to respond. A user holding a keypad responds by pressing one of the keys and the corresponding number will indicate on the 7 segment LED display. When interrogated by the base via the 216 MHz link, the keypad sends the key information to the base in a 10 millisecond duration signal from the 345 MHz transmitter. When the 216 MHz signal responds with an appropriate state of the acknowledge bit for the keypad, the keypad turns back off and awaits the next key press. This sequence takes on the average between one and two seconds. If the keypad LED winks and comes back on, the signal was not received by the base and the keypad will retry the next time it is interrogated (typically about 2.5 seconds). The keypad spends most of its time turned off conserving the battery and allowing for thousands of transmissions. Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 User Manual Page 2 of 2 File Name: STDMAN.DOC Date: 07/13/01 In Case of Difficulty The Reply® Model CRS1200 Keypads are built using the latest technology and high reliability components. There are very few things the keypad user can do wrong to cause a failure, but in the unlikely event responses are not being received by the base and passed on to the personal computer, here is a procedure to help identify the source of the problem: Are some keypads being received? Press a number on a non-working keypad Does its display light? Replace bad battery and retry or keypad defective - return to factory No Defective base or PC software problem. See Reply Base Manual Does its display flash at a rapid rate? Yes Replace bad battery and retry keypad Yes Does its display stay on solid (never wink)? No Keypad defective Return to factory for service Does display wink at a regular rate (between .5 and 2.5 seconds? Yes No Keypad transmit problem Yes Keypad receive problem Yes No No

Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 Confidentiality Request Page 1 of 1 File Name: STDREQA.DOC Date: 07/10/01 November 30, 1998 Federal Communications Commission 7435 Oakland Mills Rd. Columbia, MD 21046 Dear Sir or Madam: On the advice of our patent attorney, we would like to have the following exhibits of our application FCC ID: FBR-5FKRSPBX-2 held confidential pursuant to Section .457(d) of the Rules: Schematics Block diagrams If you have any questions, please call me at 616-820-8237 or fax to 616-820-8300. We look forward to your prompt action on this application. Sincerely, Harry Derks Manager of Electronics Engineering Fleetwood Group Inc. FLEETWOOD

Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 External Photos Page 1 of 1 File Name: STDPHOTE.DOC Date: 07/13/01

E - No.: Title: Part No.: Material / Color: Drw'n:Scale: Date:Chk'd: Date:Overall Size: Sheet:of Electronics Division Fleetwood Group, Inc. P.O. Box 1259; Holland, MI 49422-1259 11832 James St; Holland, MI 49424 Phone: 616 396-1142 / Fax: 616 820-8300 1:1 EA 10/15/98 1 1 Reply® Keypad Label FCC ID: FBR5FKRSPBX-2 HD10/15/98 Black Text on White Gloss 60# Stock 2" x 2.50" Label 0.125" Corner Radius FCC ID: FBR5FKRSPBX-2 Fleetwood Group, Inc. Holland, MI USA U.S. Patent No. Re. 35,449 Other U.S. & Foreign Patents Pending This device complies with FCC Rules Part 15. Operation is subject to the following conditions: (1) This device may not cause harmful interference and (2) this device must accept any interference that may be received, including interference that may cause unwanted operation. Reply Keypad CRS1200 ® Freq. in MHzCANADA: 1859-C115 CH RXTX 216.0125 219.0125 217.0125 218.0125 216.5125 345.0 349.0 353.0 358.5 364.0 1 2 3 4 5 RXTX 217.5125 219.5125 218.5125 173.3100 361.5 367.0 369.5 353.0 6 7 8 A CH

E - No.: Title: Part No.: Material / Color: Drw'n:Scale: Date:Chk'd: Date:Overall Size: Sheet:of Electronics Division Fleetwood Group, Inc. P.O. Box 1259; Holland, MI 49422-1259 11832 James St; Holland, MI 49424 Phone: 616 396-1142 / Fax: 616 820-8300 1:1 EA 11/10/98 1 1 Reply® Keypad Label FCC ID: FBR-5FKRSPBX-2 HD11/10/98 Black Text on White Gloss 60# Stock 2" x 2.50" Label 0.125" Corner Radius FCC ID: FBR-5FKRSPBX-2 Fleetwood Group, Inc. Holland, MI USA U.S. Patent No. Re. 35,449 Other U.S. & Foreign Patents Pending This device complies with FCC Rules Part 15. Operation is subject to the following conditions: (1) This device may not cause harmful interference and (2) this device must accept any interference that may be received, including interference that may cause unwanted operation. Reply Keypad CRS1200 ® Freq. in MHzCANADA: 1859-C115 CH RXTX 216.0125 219.0125 217.0125 218.0125 216.5125 345.0 349.0 353.0 358.5 364.0 1 2 3 4 5 RXTX 217.5125 219.5125 218.5125 173.3100 361.5 367.0 369.5 353.0 6 7 8 A CH

Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 Internal Photos Page 1 of 1 File Name: STDPHOTI.DOC Date: 07/13/01

Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 Operational Description Page 1 of 4 File Name: STDDESC.DOC Date: 07/13/01 Reply® Keypad Model CRS1200 Operational Description Introduction General Characteristics: Enclosure:Each keypad is housed in an A.B.S. plastic molded enclosure. Overall size is approximately 6.7” L x 3” W x 1.4” H. Weight is approximately 8 oz. User Interface: Membrane keyboard with tactile feedback for response entry. Ten digit keys (1-10, A-E, Yes/No) and Clear allow intuitive entry of responses. A seven segment LED display provides immediate feedback of the user response and keypad status Supply:Battery powered using readily available 9 Volt alkaline battery. Low battery detection and indication through rapidly flashing the LED provides feedback to user and to base unit. Keypads shutdown automatically between responses to extend battery life. Technology:Entirely solid state using a CMOS microcontroller. Receive and transmit are fully synthesized and crystal referenced. The receiver incorporates dual conversion superheterodyne FM design for superior sensitivity, stability, and selectivity. The transmitter is frequency locked to the reference and is FM modulated. General System Description The Reply® keypad monitors user input from the membrane switch panel, displays the key value pressed on the LED display, and transmits the key value to the base unit. The keypad is powered by a 9 volt alkaline battery. The operating voltage is regulated to 5 volts DC. To conserve battery current the keypad is shut down automatically when not being used. A hardware reset circuit (RC discharge) guarantees the keypad will be shut down even in the rare event that the microprocessor malfunctions. The five volt regulator provides a logic signal to alert the microcontroller when battery voltage nears 6.5 volts and is in need of replacement. If an option is enabled, the keypad can send low battery status to the base unit. A system clock frequency of 10.200 MHz is provided by an external crystal circuit on the microcontroller. The same crystal reference is used for both microcontroller and RF portions of the keypad. Key press inputs are read through a 14 key switch matrix. The matrix is configured in four columns (microcontroller inputs) and four rows (microcontroller outputs). The matrix columns are pulled up to 9 volts via the reset circuit so when a key is pressed, the primary regulator and Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 Operational Description Page 2 of 4 File Name: STDDESC.DOC Date: 07/13/01 microcontroller are powered up. The microcontroller then reads the switch matrix by alternately grounding each row until it sees a 'low' at the column input. Keypad configurations such as keypad address and channel number are stored in on-board EEPROM. Receiver Theory of Operation Introduction to Receiver Operation The Control Receiver (CRX) is located within the CRS 1200 handheld communicator. The receiver is activated when the user enters a digit from the integral keypad. The receiver diagram is included in the block diagram exhibit. The receiver operates with Frequency Shift Keyed (FSK) binary data with +/- 5kHz nominal deviation. Receiver Frequency Plan The receiver is a double conversion super-heterodyne system with a 1 st IF of 10.655 MHz and a 2 nd IF of 455 KHz. It uses a 10.2 MHz crystal oscillator for the 2 nd LO, processor clock, and as a reference signal for the synthesized 1 st LO. The eight channels and the respective 1 st LO frequencies are listed below: Channel Number Carrier FrequencyFirst LO Frequency 1216.0125 MHz205.3575 MHz 2219.0125208.3575 3217.0125206.3575 4218.0125207.3575 5216.5125205.8575 6217.5125208.8575 7219.5125206.8575 8218.5125207.8575 The synthesizer uses an internal reference frequency of approximately 50 kHz. Receiver Block Diagram The following explains the receiver block diagram exhibit: The 216 to 219 MHz signal is first received by the printed antenna followed by a two-pole band-pass filter, and low noise amplifier (U102a). Next, potential interference from the keypad transmitter is removed in the 345 to 370 MHz band reject filter (FL3), followed by additional gain in U102b. The output of U102b is impedance-matched to the 1 st conversion mixer (M1) with a transformer (which is realized with L107, L109, and C117 – Figure 2). The output of M1 (10.655 MHz) is amplified by A1 and filtered by FL4. Next, the signal is converted to 455 KHz in M2, amplified by A2, and band-pass-filtered in FL5. The sequence of A3, A4, and M3 form a traditional limiter/discriminator that provides a 2Vp-p Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 Operational Description Page 3 of 4 File Name: STDDESC.DOC Date: 07/13/01 detected signal. The detected signal is low-pass filtered and AC coupled in FL6 and sent to a threshold comparator as realized in U202 to form a conditioned signal out to send to the microcontroller. Transmitter Theory of Operation Introduction to Transmitter Operation The Control Transmitter (CTX) is located within the CRS 1200 handheld keypad. The transmitter is activated within assigned 10mS slots with slots as determined in the fixed base station. After the user enters a digit in the keypad the keypad receiver is activated and subsequently receives time slot information, following which the CTX is turned on within the appropriate slot. The CTX is diagrammed in Figure 1, with schematic shown in Figure 2. Transmitted Waveform Description The Control (CTX) transmitter is a Frequency Shift Keyed (FSK) binary data transmitter, which is activated by a keypress for a period of 10 mS. It has a minimum interval of 500 milliseconds between transmit intervals. As such, the legal peak power is increased by 20 dB since the CTX has a duty cycle of less than 10% in a 100mS interval. The transmitted signal has a deviation of +/- 300 KHz nominal. Transmitter Modulation and Synthesizer Referring to the transmitter block diagram exhibit Figure 1, the transmitter is phase-loc…

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Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 Application Statement Page 1 of 1 File Name: STDAPP.DOC Date: 07/13/01 October 30, 1998 Federal Communications Commission 7435 Oakland Mills Rd. Columbia, MD 21046 Dear Examiner: This application for FCC ID: FBR-5FKRSPBX-2 is an improved version of a previously approved product with FCC ID: FBR-5FKRSPBX-1. It is the same product in appearance and functionality as the previously approved product but there have been circuitry changes internally for product improvement. These changes consist of using new RF components and synthesizer technology to provide multi-channel capability (same frequencies used as the previous product) and to reduce cost. Performance including system timings is the same as the previous design for compatibility with older systems. The product has been tested by Elite Electronic Engineering Company to confirm ongoing compliance. Documents showing the new schematic and circuit board appearance as well as all other relevant documents are supplied with this application. Sincerely, Harry Derks Manager of Electronics Engineering Fleetwood Group Inc. FLEETWOOD

Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 User Manual Page 1 of 2 File Name: STDMAN.DOC Date: 07/13/01 Reply® Response Keypad Model CRS1200 Users Manual Purpose of the Keypad The Reply® Model CRS1200 Keypad is a wireless portable device that makes it possible for a number of people to participate interactively in a class situation or group meeting. The product accomplishes this by sending keypad switch closure information from the keypad to a base unit which employs a wireless transceiver to receive the keypad signal. These signals are processed by the base unit and delivered to a host computer which allows the responses to be stored, analyzed and if desired displayed on a video projector for feedback to the group showing the results of their participation. Description of the Keypad The Reply Model CRS1200 Keypad is housed in a plastic enclosure similar in appearance to a calculator. It is powered by an internal 9 volt alkaline battery with no external wires or electrical connections. The keypad uses a membrane switch panel for numeric entry and a 7 segment LED display for entry display to the user. The keypad uses a synthesized transceiver compliant with FCC Part 15 Subpart B and C. Using the Keypad To use a keypad a corresponding channel base unit must be active and under control of an application running on a personal computer. This is usually the responsibility of the instructor or meeting facilitator. The instructor or meeting facilitator uses a program running on a personal computer to determine when responses from the keypads are to be received. Typically this program will deliver a number of informational screens on a video projection system and then will present a question screen. The participants with keypads will then be instructed to respond. A user holding a keypad responds by pressing one of the keys and the corresponding number will indicate on the 7 segment LED display. When interrogated by the base via the 216 MHz link, the keypad sends the key information to the base in a 10 millisecond duration signal from the 345 MHz transmitter. When the 216 MHz signal responds with an appropriate state of the acknowledge bit for the keypad, the keypad turns back off and awaits the next key press. This sequence takes on the average between one and two seconds. If the keypad LED winks and comes back on, the signal was not received by the base and the keypad will retry the next time it is interrogated (typically about 2.5 seconds). The keypad spends most of its time turned off conserving the battery and allowing for thousands of transmissions. Fleetwood Group Inc. FCC ID: FBR-5FKRSPBX-2 User Manual Page 2 of 2 File Name: STDMAN.DOC Date: 07/13/01 In Case of Difficulty The Reply® Model CRS1200 Keypads are built using the latest technology and high reliability components. There are very few things the keypad user can do wrong to cause a failure, but in the unlikely event responses are not being received by the base and passed on to the personal computer, here is a procedure to help identify the source of the problem: Are some keypads being received? Press a number on a non-working keypad Does its display light? Replace bad battery and retry or keypad defective - return to factory No Defective base or PC software problem. See Reply Base Manual Does its display flash at a rapid rate? Yes Replace bad battery and retry keypad Yes Does its display stay on solid (never wink)? No Keypad defective Return to factory for service Does display wink at a regular rate (between .5 and 2.5 seconds? Yes No Keypad transmit problem Yes Keypad receive problem Yes No No