Agilent Technologies 8564EC Service Manual page 261

General Troubleshooting
Error Messages
525 RBW 10K Unable to adjust symmetry of 10 kHz resolution
bandwidth in fourth crystal pole.
526 RBW <300 ADC timeout during IF ADJUST of <300 Hz resolution
bandwidth.
527 RBW <300 Step gain correction failed for <300 Hz resolution
bandwidth. Check narrow bandwidth SGO attenuator.
528 RBW <300 Calibration of dc level at ADC failed for <300 Hz
resolution bandwidth.
529 RBW <300 Invalid demodulated data for <300 Hz resolution
bandwidth flatness and IF down-converter. Demod data
for calibration may be bad.
530 RBW <300 Adjustment of VCXO down-converter failed with
resolution bandwidths less than 300 Hz. Narrow
bandwidth VCXO calibration failed.
531 RBW <300 Flatness correction data for resolution bandwidths
<300 Hz not acceptable.
532 RBW <300 Absolute gain data for resolution bandwidths <300 Hz
not acceptable.
533 RBW <300 ADC timeout adjusting resolution bandwidths less
than 300 Hz. Timeout during data sampling narrow
bandwidth chunk.
534 RBW <300 Unable to do frequency count of CAL OSC using IF
down-converter when adjusting resolution bandwidths
less than 300 Hz.
535 RBW <300 Unable to obtain adequate FM demod range to
measure 500 Hz IF filter with resolution bandwidths
less than 300 Hz.
536 RBW <300 Unable to auto-range chirp signal while setting VCXO
or doing flatness calibration with resolution
bandwidths less than 300 Hz.
537 RBW <300 Unable to auto-range CW CAL OSC signal to count
VCXO signal with resolution bandwidths less than
300 Hz.
538 RBW <300 Shape of 500 Hz IF filter appears too noisy to adjust
VCXO down-converter for resolution bandwidths less
than 300 Hz.
539 RBW <300 Unable to auto-range the CW CAL OSC signal to
pretune the VCXO for resolution bandwidths less than
300 Hz.
342 Chapter 7