HP 8642A

Performance Tests
Model
8642A/B
PERFORMANCE TESTS
5. 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
remaimng HP 8642 settings.
Results
FREQ PM
PM Distortion
(MHz)
(rad.)
Min. Actual Max. Actual Max.
8.00
0.781 0.651 0.909 rad
0.4%
1050 100.0 94.9 105.1 rad 0.4%
0.15
100.0
94.9 105.1 rad
0.4%
6. DC FM Center Frequency
Preset the instruments. On the HP 8642 key in AMPT + I 0 dB, FM,
180 kHz., EXT DC. On the measuring receiver, enable 10Hz
resolution 1. Verify the reading is within the specified limits.
FREQ
Results
(MHz)
Min.
Actual Max.
100.00000
99.99950 MHz 100.00050
MHz
If the measuring receiver is an HP 8902, key in 7.1 SPCL.
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