HP 8901B Operation And Calibration Manual page 347

Model
8901B
Performance Tests
24. On the Modulation Analyzer, key in 3.0
SPCL
to
set the
IF
back to 1.5 MHz. Repeat steps 22
and 23.
Residual FM; 1.5 MHz
IF:
Hz
AM Rejection (with FM); 1.5 MHz IF: 20 Hz
25. On the Modulation Analyzer, press QM. Momentarily disconnect the audio input to the AMFM
test source and note the residual OM displayed on the Modulation Analyzer.
Residual OM, 1.5 MHz IF:
rad
26. Reconnect the audio input of the A M F M
test
source. Note the Modulation Analyzer's displayed
OM. The displayed QM minus one-half the residual OM noted in step 25 should be 0.030 rad
peak or less.
AM Rejection (with QM); 1.5 MHz IF:
0.030 rad
Performance Test
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