Cooper TP Workshop Manual_Scant:Layout 1 7/8 ... - Cooper Security

4690INTRODUCTIONA radio link’s performance varies from high strengths near the transmitter toweak signals at the extremes of range. Since radio range varies considerablyfrom site to site, you must test each site before installing any radio basedsystem.The Scantronic 4690 Radio Strength Monitor is designed to allow accurateassessment of signal strengths before, during and after installation and iscompatible with the 4600 and 4700 range of Scantronic radio products.Technical SpecificationSizeh x w x d 150 x 80 x 50mm (66mm inc knobs).Weight500 g approximately.BatteryAlkaline PP3 (MN1604 or similar).Battery life Typically 12 hours at factory set low volume settings.Protected against wrong polarity battery fitting.Tone output Frequency typical 200Hz at no signal, 800Hz at full scale.Operating temp. -10° to +55°C. Humidity up to 80% (non condensing).Peak hold drift Will not change more than 1 LED step in 5 minutes.Receiver sectionAerialCentre frequencyBandwidthSensitivitySpurious pickupAudio recovery4598 (1/4 wave helical).173.225MHz.12kHz.Red/green LED boundary = 1uV calibration point.LED8/LED9 boundary 100uV calibration point.A 3KHz deviation 1KHz sinewave is distinguishable at aninput level of 0.2uV typically.External attenuators on the BNC aerial input can be usedup to a maximum of 40dB attenuation before the pickupthrough the case becomes significant.Narrow band FM, typical deviation +/-3KHz.OperationThe METER switch is the main function control.OFFThe battery is totally disconnected in this position.BATT TEST The LED display indicates the state of the 4690's internalbattery, a good battery gives a reading of 6 or higher. You2 of 6 496381 Issue 1