HP 8642A - Page 256

Performance Tests
Model 8642A/B
PERFORMANCE TESTS
9. FM Distortion (1 kHz)
Preset the instruments. Set the measuring receiver to FM mode and
audio distortion mode. Turn off all audio Filters. Set the HP 8642
amplitude to +10 dBm. Set the HP 8642 RF frequency and FM
deviation to the values listed in the table below. Verify that the
measuring receiver readings are less than the specified maximum.
FREQ
(MHz)
1050
256
4
FM
(kHz)
72.0
135.0
67.5
Results
Actual Distortion Max.
0.4%
2.0%
4.0%