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Operation
Model 8902A
AM Check
19. Reconnect the sensor module input
to the signal generator's output. (See Figure
3-9.)
HP 8902A
MEASURINQ RECEIVER
0
0
RF OUTPUT
I
SIQNAL GENERATOR
INPUT
SENSOR MODULE
60
om
Figure 3-9. A M Check Setup
20. Press the Measuring Receiver's MHz key. Set the signal generator for 50% AM (as measured on
21. Press the A M key. The Measuring Receiver should display between 46.0 and 54.Oo/o.
22. Set the signal generator's AM to 25% (as measured on its AM meter). The Measuring Receiver
its AM meter) at a I kHz rate.
should display between 22.00 and 28.OO0/o with
0.01Yo
resolution.
FM and Phase Modulation ((PM) Checks
23. Set the signal generator's AM
off
and set FM to 50 kHz peak deviation (as measured o n its FM
meter) at a 1 kHz rate. Press the FM key. The Measuring Receiver should display between 45.0
and 55.0 kHz.
24. Adjust the signal generator's FM peak deviation for 50 kHz as displayed by the Measuring
Receiver.
25. Press the
(PM
key. The instrument should display between 45.0 and
55.0
rad.
3-52
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