HP 8642A Operating Manual page 254

Performance Tests
Model 8642A/B
PERFORMANCE TESTS
PM Indicated Accuracy and Distortion
Set the measuring receiver to PM mode with the 300 Hz HP filter
and the 15 kHz LP filter selected. Turn off the HP 8642 AM. Set
the RF frequency and PM deviation to the first values in the table
below. Verify that the measuring receiver reading for phase
deviation is within the specified limits. Set the measuring receiver to
distortion mode and verify that the distortion reading does not exceed
maximum. Repeat phase deviation and distortion tests for the
remaining HP 8642 settings.
FREQ
(MHz)
8.00
1050
0.15
PM
(rad.)
0.781
100.0
100.0
Results
PM
Min.
0.651
94.9
94.9
Actual Max.
0.909 rad
105.1 rad
105.1 rad
Distortion
Actual Max.
0.4%
0.4%
0.4%
DC FM Center Frequency
Preset the instruments. On the HP 8642 key in AMPT +10 dB, FM,
180 kHz, EXT DC. On the measuring receiver, enable 10 Hz
resolution . Verify the reading is within the specified limits.
FREQ
(MHz)
100.00000
Results
Min.
99.99950 MHz
Actual Max.
100.00050 MHz
If the measuring receiver is an HP 8902, key in 7.1 SPCL.
4-22