HP 8901B Operation And Calibration Manual page 364

Performance Tests
Model 8901B
Audio
Synthesizer
bquency (HZ)
800
1200
1600
2000
26. Set the audio synthesizer's frequency as shown in the following table without changing the audio
synthesizer's amplitude. For each setting, the Modulation Analyzer's display should read between
the limits indicated in the table.
Distortion Limits
(X)
Lower
Actual Upper
0.89
-
1.12
0.89
-
1.12
0.89
-
1.12
0.89
-
1.12
4-24
Performance Test 5