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Chapter 4, Test, Parameter, and Pass/Fail Limit Descriptions
TEST_09. TX Residual AM Hum and Noise
TEST_09. TX Residual AM Hum and Noise
This test measures the AM hum and noise level which is the amount of amplitude
modulation present on the carrier at the output of the receiver in the absence of
any audio-input signal.
The 400 Hz High-Pass Filter is used if Option 010 is installed in the test set.
Residual AM hum and noise is measured in percent when the transmitter is keyed.
Pass/Fail Limits Used
Pass/Fail Limit 39, TX Residual AM Hum and Noise