2-96 Subject to Export Control, see Cover Page for details.
2-5-3. ADVANCED VEHICLE INSTALLATION TESTING
1. Connect the 3500 / 3500A T/R Connector to the Radio Antenna Port. If the Radio rated
output power is >20 W, insert attenuator between the T/R Connector and the Radio Antenna
port. Key the Radio and measure the Radio’s forward output power, frequency and
modulation.
2. Unkey the Radio, select Receiver Test and set up the RF level so a 1 kHz tone can be heard
in the Radio (add 150 Hz squelch tone if required). Select frequency and modulation.
3. Measure sensitivity by reducing the RF level of the 3500 / 3500A until the audio signal can
no longer be heard in the Radio. If a RF Power Amplifier is installed between the Radio and
antenna, take a measurement between the RF Power Amplifier and the antenna (install the
optional attenuator), then measure between the Radio and the RF Power Amplifier to
determine if the Radio or the RF Power Amplifier is faulty.
4. Connect the antenna to the 3500 / 3500A SWR Connector and measure VSWR. For
installations with multiple bulkhead connections, repeat this test at each bulkhead to
determine if a bad connection exists between the antenna and the Radio. The 3500 / 3500A
SWR Connector needs to be calibrated the first time.
5. Perform BIT (SELF TEST) on the Radio to detect radio faults not related to the RF output.
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