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Moduleton
and Audio
5-5
5.
Manually tune the HP 8902A to the expected frequency of the signal
source
by
keying
in
the source frequency and then pressing the
MHt
key.
The Manual Tuning Mode is always the right choice for this measurement
technique.
6.
Now select
the desired measurement on the HP 8902A. If you are making
RF Power or Tuned RF Level measurements, the calibration factors for the
Sensor Module that you are using need to be stored in the Frequency Offset
cal factor storage table. Refer to Appendix
B
for the storage procedure.
7 . When you want to exit the Frequency Offset Mode, key in
27.0 SPCL
If you wish to re-enter the Frequency
O f f s e t
Mode and
maintain
the same external LO frequency
set
in step
4,
key in 27.1
SPCL.
Modulation
and Audio
Tone Bursf FM
This procedure enables you to configure the
HP
890244 as a
Tone Burst receiver by setting a time delay between when the
HP 8902A senses an RF signal at
its
INPUT and when it enables
the output at the MODULATION OUTPUT/AUDIO INPUT port.
Connect an audio counter to the MODULATION OUTPUT/AUDIO
INPUT
port.
1 .
Conned
y o u
transmitter (modulated source) to the
HP
8902A's
INPUT.
2.
Press
the
FM
key on
the
H p
8902A.
3.
Select a detector, and if desired, Audio Filters, and
an
FM De-Emphasis
4.
Key on the transmitter. Allow the HP 8902A to range and tune automatically.
filter.
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