CFS8DLLYNXRRemote Security Tranceiver

Federal Communications Commission, ADEMCO, Equipment Approval Services, 165 Eileen Way, PO Box 358315 Syosset, Pittsburgh, NY 11791 PA 15251-5315 7/7/00. SUBJECT: Application for certification of Ademco's transceiver type LYNX. FCC ID: CFS8DLLYNXR. Dear Sir, Please find enclosed a completed 731 form, a description of the transceiver, circuit schematics, label drawing, test report, photographs, and application fee for certification of Ademco's model LYNX transceiver under FCC Rules and Regulations Part 15, Subpart C. The receiver contained within the transceiver is a superhet. If you have any questions or require additional information, please contact the undersigned. Yours Sincerely, Ken Addy, Director of Radio Eng. LIST OF EXHIBITS CFS8DLLYNXR 1) Description of the LYNX 2) Circuit description and schematic 3) Message Protocol, timing and duty cycle calculation 4) Photographs showing location of FCC ID label. 5) Report of measurements 6) Test equipment list 7) Installation instruction including FCC compliance statement and FCC user's warning

EXHIBIT 2 Circuit Description. CFS8DLLYNXR The LYNX is constructed on a pair of PCBs interconnected via a ribbon cable. The main PCB contains the RF transmitter and receiver circuitry as well as all control, display, keypad and annunciation circuitry. The transmitter is a SAW resonator Colpitts oscillator, Q26, XTL4 etc. The transmitter is on-off keyed (AM) modulated by a control signal from the microcontroller U18 which turns PA Q30 on or off via Q28/Q29, thus modulating the output signal. The RF output signal is connected to two PCB mounted antennas via Helical filter L1 and diodes CR32/CR33. The receiver is a superhet with a single intermediate frequency at 10.7MHz. Q31 etc. is the low noise amplifier which is connected to the PCB mounted antennas. Diodes CR32/CR33 under the control of a microcontroller are periodically switched to provide system antenna diversity. The IC U22 includes a balanced mixer which converts the incoming signal down from 345MHz to 10.7MHz. This IC also includes the required IF gain and detected output. FL1 is a ceramic IF filter. IC U19 performs video filtering and processing and provides a data signal. The local oscillator (XTL3/Q32) is a 59.28333 Mhz Xtal oscillator which outputs 355.7MHz to the mixer via multiplier L3/C115/C116.

EXHIBIT 3 CFS8DLLYNXR Message protocol, timing and duty cycle calculation. The data output is phase encoded Manchester which has inherent 50% duty cycle. The transmitted data rate is 3.95 kBs +/-0.5%, i.e. each bit is 253.1uS duration typical and 254.3uS max. The worst case data format consists of 120 bits, The duration of each word is 30.51 mSec max. Each word is transmitted 6 times at each transmission event, the words are separated (start to start) by 102mSec. The total max transmission time at each transmission event is 540.51mSec. The duty cycle over a 100mSec measuring period is calculated as follows: Duty Cycle = Actual RF transmission ON time / 100mSec (interval) Actual transmission ON time = 120 bits X 50% X 254.3uSec = = 15.26mSec Therefore Duty cycle = 15.26 / 100 mSec = .1526 =15.26%

EXHIBIT 5 CFS8DLLYNXR Report of Measurements. Measurements were made at Ademco 's Measurement Facility at 160 Eileen Way , Syosset , NY 11791 , FCC Registration number : 90421. Measurements were made in accordance with the procedures and reporting requirements of ANSI C63.4-1992. The Test Set-Up (C63.4 section 10.1.3) is shown in the attached drawing. The attached photographs shows the attached power supply and telephony connections during the emissions measurements. The sequence of testing (C63.4 section 10.1.7) for radiated emissions is as follows: A preliminary scan was conducted with the receiver antenna close to the EUT in order to identify the emission characteristics of the EUT (C63.4 section 8.3.1.1). The antenna and EUT were then placed at the proper separation with the EUT positioned on a non-conducting turntable. The EUT was rotated on the turntable to maximize the received signal strength, then the receiver antenna height was varied to further maximize the received reading. Thereafter, the device was again rotated to a peak output position and the antenna height was re-adjusted for maximum received signal. This procedure was re-iterated until there was no further increase in signal level. This procedure was performed with the EUT rotating in three orthogonal planes (C63.4 section 13.1.4.1) to generate a final maximum reading which is recorded on the radiated emissions result sheet. Similar measurements were made on the receiver to ensure compliance as an unintentional radiator. See Exhibit 6 for list of test equipment (C63.4 section 10.1.4). Note, Spectrum Analyzer resolution bandwidths set as follows; (Video Bandwidth set greater than RBW) - For occupied bandwidth measurements, RBW = 100kHz, (This is in accordance with the minimum RBW allowed by C63.4, which requires RBW greater than 5% of the FCC required occupied bandwidth spec of 0.25% of center frequency). - For radiated emissions below 1 GHz, the RBW = 100kHz. Detector function set to peak. - For radiated emissions above 1 GHz, the RBW = 1MHz. Detector function set to peak. OCCUPIED BANDWIDTH is shown on attached plot. RADIATED EMISSIONS are recorded on attached sheet.

EXHIBIT 6 CFS8DLLYNXR Test Equipment List. Model: MFG: Description: Calibrated: s/n: (12 month) 2784 Tektronix spectrum analyzer 08/05/99 B010165 Antenna Roberts dipole 30 - 65 MHz 02/16/00 110 Antenna Roberts dipole 65 - 180 MHz " 110 Antenna Roberts dipole 180 - 400 MHz " 110 Antenna Roberts dipole 400 - 1000 MHz " 110 Antenna Electrometrics Horn 1 - 18 GHz 10/19/99 6127 Cable - RG58U - -