652 Chapter14
Analyzer Messages
Interpreting Analyzer Messages
2. Use DISPLAY CAL DATA to view the current bandwidth control
factors.
3. Perform the CAL AMPTD self-calibration routine. Use DISPLAY
CAL DATA to monitor changes in the bandwidth control factors
each time the
CAL AMPTD routine is performed.
4. Repeat the
CONF TEST routine. If the error message is still
present, look for an unstable bandwidth-filter assembly or
bandwidth control line.
Refer to bandwidth control line information in Chapter 5 when
troubleshooting the bandwidth control lines.
• The bandpass shape of the failed resolution bandwidths may have
drifted since the last time the self-calibration routines were run.
1. Look at the bandpass shape of each failed bandwidth. If
realignment is needed, refer to the crystal and LC bandwidth
filter adjustment procedure in Chapter 2 .
2. Run the
CAL AMPTD self-calibration routine and store the data
using
CAL STORE.
3. Repeat the
CONF TEST routine. If the error message is still
present, one of the bandwidth-filter assemblies may be defective.
Refer to the CONF TEST description in Chapter 13 for more information
about the confidence test routine.
RF PRESEL ERROR (H)
Indicates that the preselector peak routine cannot be performed.
For 8592L, 8593E, 8595E, and 8596E spectrum analyzers only.
Related Assemblies
A7 analog interface assembly, A3A8 (switched) YIG-tuned filter.
Troubleshooting Hints
Ensure that the signal source is connected to the RF input.
RF PRESEL TIMEOUT (H)
Indicates that the preselector peak routine cannot be performed.
Related Assemblies
A7 analog interface assembly, A3A8 (switched) YIG-tuned filter.
Troubleshooting Hints
Ensure that the signal source is connected to the RF input.
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