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Operation
Model 8902A
DISPLAY
IOPTION S E R I E S
030
ONLY1
~
~
~~~~~
Selective Po wt>r Mt~asiiremen
f
Sirnpl(fitd Block
Diagrurn
COMMENTS
Frequency Modes Possible During the Selective Power Measurement.
During the selective power measurement, the instrument must be properly tuned to the signal and
must be in one of the following R F Frequency measurement modes:
0
R F Frequency (the
FREQ
key, HP-IB Code:
M 5 ) .
R F Frequency Error (the S, FREQ ERROR keys, HP-IB Code:
S5),
0
IF Freque:icy (Special Function 34, HP-IB Code: 34,0SP), or
0
LO
Frequency (Special Function
33,
HP-IB Code:
33.0SP).
When To Use an External LO.
A
low-noise, external LO is recommended for RF
inpui
frequencies above 300 MHz.
Also,
an external
19 can be selected for lower phase noise and
finer resolution in its frequency steps.
When an external LO is used. the internal
LO
should be manually tuned to an arbitrary frequency
(such
as 100
MHz) to defeat automatic signal search. Refer to RI:Frcqiicw*y Tuning on page
3-141
for tuning information. (Note that the
455
kHz IF
will
be used.)
3- 126
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