HP 8901B Operation And Calibration Manual page 115

Help 4-7
1
Increase RF input
attenuation. If Range
Hold is being used,
check range limits.
Increase RF input
attenuation. If Range
Hold is being used,
check ranae limits.
Table 4-3.
RF
Power
and
TRFL
Error Codes (2
of 3)
1. Select linear (Watts)
Display
Code
06
07
2. Key in a different
08
09
units, or disregard error
when there is no power
present at sensor input.
Secure connection
at SENSOR input.
10
ratio reference.
Wait for oven to warm
for highest accuracy.
Remove power from
power sensor input
during zeroing process.
Refer to
Appendix B
for entry and
verification information.
11
12
13
14
15
Problem Description
Input level exceeds measurement
range of power sensor being used.
Voltmeter is being overdriven.
Calibrator outp'ut not sensed at INPUT.
High stability time base problem (Option 002
instruments only).
Frequency of input signal is not within measure-
ment range.
1. Attempting to measure RF power
(dBm) with no power at sensor input.
2. Mathematics error (log 0 not allowed).
Indicates internal time base oven
cold (Option 002 instruments only).
Power sensor was disconnected
durina RF Power measurement.
Cannot zero power sensor.
Indicates Sensor Module's Reference
Calibration Factor not stored in instrument.
~~~
Input Problem
~~ ~~
Decrease level of
input signal and
press the CLEAR key.
Decrease level of
input signal and
press the CLEAR key.
Check connection
to Calibrator.
Check for Calibrator
malfunction.
Set the 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 and re-enter
the RF Power mode.
Operating Problem
Check internal time
base for malfunction.