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HP 8902A Quick Reference Manual page 10

Measuring receiver
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Display
Code
-
-
or 0 MHz
- - - -
- - - - - -
01
02
03
04
05
06
07
08
09
10
To Solve an Input Problem
To Solve an Operating Problem
Adjust input signal level or change
measurement sensitivity.
Decrease RF attenuation or gain.
Re-check operating conditions being
used.
I
Manually tune to input signal.
Check tuning.
Re-check special operating conditions
being used.
Increase input signal level or decrease
AM.
Increase RF input attenuation.
Increase level of input signal.
Press the MHz key to center IF signal
in IF passband.
If problem persists, signal may be
drifting.
Decrease RF and/or IF gain setting.
Decrease selected
RF
input attenuatior
or increase IF gain.
If Range Hold is being used, check
range limits.
Decrease modulation level on input
signal to within measurement range.
Increase range limit setting, Special
Function
2.N.
Increase carrier level or decrease AM
depth (<go%).
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Input level exceeds 7 Vrms (1 W peak).
Decrease level of input signal.
If making a TRFL measurement, also
press the CLEAR key.
Decrease selected RF or IF gain.
If Range Hold is being used, check
range limits.
Decrease modulation level on input
signal.
If making a TRFL measurement,
decrease level of input signal and pres
CLEAR key.
Decrease selected RF or IF gain.
If Range Hold is being used, check
range limits.
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Check connection to Calibrator.
Check for Calibrator malfunction.
I
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Check internal time base for
malfunction (Option
002
only).
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Adjust frequency of input signal to
within measurement range, or increase
measurement range.
If making a TRFL measurement, set thc
input level to between 0 and
-20
dBm.
Select the Frequency mode. When the
instrument displays the frequency of
the input signal, press the MHz key an(
re-enter the TRFL mode.
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7

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