OVO-759R916.5 MHz Receiver

International Certification Services, Inc. 916.5 Mhz Receiver Block Diagram RF amp ASH receiver Digital pc board Battery power source 2 AAA batteries

1100 Falcon Ave.Tele:320-864-4444 Glencoe, MN 55336 Fax:320-864-6611 “Your Agent to Product Certifications and Licenses Throughout the World” To:FCCFeb 6, 2000 From: Duane R. Bagdons Form 731 Conf No. EA96705, FCC ID #OVO759R I mistakenly sent the wrong operations manual file with the submission that I did yesterday. I am replacing it with the following attachment sent today. Please remove the previouos operations manual and replace it with this new file. Thank you Duane R. Bagdons INTERNATIONAL CERTIFICATION SERVICES INC.

The Receiver uses an amplifier-sequenced hybrid (ASH) receiver which is based on several leading edge technologies that allow outstanding performance in a small and simple-to-apply module. Two surface-acoustic-wave (SAW) devices are employed. Front-end filtering by a low-loss coupled-resonator SAW filter provides excellent selectivity. Typical sensitivity of –80dBm is achieved with no RF oscillating or regenerative circuits. This results in virtually no RF spurious emissions. A low-loss SAW delay line provides the time delay necessary to sequence the two RF amplifiers. Time sequencing of the RF gain eliminates the need for frequency conversion prior to AM detection. Below is the data taken in an anechoic shield room at an antenna distance of 1 meter. Data was taken at EUT orientations of 0, 90,. 180, and 270 degrees from the antenna. The receiver was stimulated with a 917 Mhz signal to ensure the device was operating. FCC Part 15.109 limits Freq (Mhz) dBuVCable Corr Fac Antenna Fac Corrected Data Limit @ 10 meters Limit @ 3 meters Limit @ 1 meters Margin 88.2842.050.467.149.6143.553.563.5-13.89 106.829.180.627.637.443.553.563.5-26.1 109.529.760.627.337.6843.553.563.5-25.82 143.530.860.667.639.1243.553.563.5-24.38 15541.890.661052.5543.553.563.5-10.95 16029.780.6612.142.5443.553.563.5-20.96 193.829.870.8410.0940.843.553.563.5-22.7 20030.180.810.441.3843.553.563.5-22.12 38638.031.3615.2954.6846.456.466.4-11.72 387.835.741.3615.3352.4346.456.466.4-13.97 388.836.711.3615.3553.4246.456.466.4-12.98 89434.32.1822.5859.0646.456.466.4-7.34 91735.782.2422.9160.9346.456.466.4-5.47 93132.662.3423.1658.1646.456.466.4-8.24 917 Mhz is the driven signal which was applied to the receiver to ensure the receiver was operating.

International Certification Services, Inc. 916.5 Mhz Receiver Top Level Assembly External Photos

International Certification Services, Inc. Analog Technologies Corp 916.5 Mhz Receiver Label Information FCC ID: OVO-759R This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. DYNAMIC ALARMS, INC. Brainerd, MN 56401 International Certification Services, Inc. Analog Technologies Corp. 916.5 Mhz Receiver ID Label

International Certification Services, Inc. 916.5 Mhz Receiver Top Level Assembly External Photos

International Certification Services, Inc. 916.5 Mhz Receiver Operation Description The receiver is based on the RF Monolithics ASH (Amplifier Sequenced Hybrid) receiver. The receiver has an input SAW filter centered at 916.5 Mhz. It has no local oscillator or regenerative circuits. The only oscillators in the receiver are a 455 KHz ceramic resonator oscillator for the microcontroller, a 0.2 Hz oscillator for the paging motor, and a 2 KHz oscillator for the audible alarm. The unit is powered by batteries and has a 1.4 wavelength monopole antenna.

International Certification Services, Inc. 916.5 Mhz Receiver Electrical Schematic

International Certification Services, Inc. 916.5 Mhz Receiver Electrical Schematic

International Certification Services, Inc. 916.5 Mhz Receiver Radiated Emissions Test Configuration