Repair procedures, tests, and adjustments
Manpack Transceiver 2110 series Repair Guide 67
1 Set the RF signal generator to 4.0 kHz above the SCF of the selected USB channel
or 4.0 kHz below the SCF of the selected LSB channel.
1 Record your results and actions (see page 109, Test sheet for the 2110 series
Manpack Transceiver).
1 Switch off the RF output from the RF signal generator.
1 Return to the Repair flowchart (see Figure 29 on page 95).
Performing the Noise Limiter test
To test the noise limiter circuit in the transceiver:
1 Set up the equipment (see page 56, Setting up the test equipment).
1 Select a channel to test.
1 Set the RF signal generator to 1.0 kHz above the SCF of the selected USB channel
or 1.0 kHz below the SCF of the selected LSB channel.
1 Set the RF output level of the RF signal generator to –115 dBm.
1 Switch on the RF output from the RF signal generator.
1 Adjust the volume via the front panel so the tone is clearly audible.
1 Switch on the noise on the 0208.
1 Record your results and actions (see page 109, Test sheet for the 2110 series
Manpack Transceiver).
1 Switch off the RF output from the RF signal generator.
1 Switch off the noise on the 0208.
1 Return to the Repair flowchart (see Figure 29 on page 95).
Pass A reading on the AC voltmeter that is < 0 dB.
Pass Faint 1 kHz tone with buzzing is audible from the 0208 speaker.
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