Agilent Technologies 856290216 service manual YTO Loop Settling Errors 351 to

YTO Loop Settling Errors (351 to 354)

These errors are generated when the YTO loop error voltage will not stabilize at an acceptable value during the YTO loop locking routines. These errors only apply to the hardware in an HP 8560 E-Series spectrum analyzer.

351 SETL FLD YTO error voltage is not settling.

352 TWID FLD Unable to bring YTO error voltage DAC’s to quiescent point.

353 SRCH FLD No acceptable YTO DAC value found.

354 LK ITERS Cannot lock. Lock iteration routine terminated.

Sampling Oscillator (355)

This error indicates an unlocked sampling oscillator during the local oscillator (LO) 1a ignment routine. This error only applies to the hardware in an HP 8560 E-Series spectrum analyzer.

355 SMP CAL Sampler unlock condition during calibration routine. This error remains until a successful recalibration is performed.

Span Accuracy Calibration Errors (356 to 361)

These errors are generated when the span accuracy calibration fails. The span accuracy calibration is done during “power up”, IF calibration (every 5 minutes), and LO IF realignment routines. Span accuracy calibration sweeps occur during the retrace (dead time) of the main sweep ramp. The firmware then detects any span accuracy calibration errors. These errors only apply to firmware revisions

.931216 and later.

356 SPAC CAL Sweep data problem finding “bucket 1” of the span accuracy calibration sweep. This error indicates a possible failure of the sweep generator, span attenuator, or main/FM coil sweep switches on the Al4 frequency control assembly. Refer to Chapter 11, “Synthesizer Section.”

357 SPAC CAL

358 SPAC CAL

359 SPAC CAL

Cannot find the “x” intersection for “bucket 1” of the span accuracy calibration sweep. This error indicates a possible failure of the sweep generator, span attenuator, or main/FM coil sweep switches on the Al4 frequency control assembly. Refer to Chapter 11, “Synthesizer Section.”

Sweep data problem finding “bucket 2” of the span accuracy calibration sweep. This error indicates a possible failure of the sweep generator, span attenuator, or main/FM coil sweep switches on the Al4 frequency control assembly. Refer to Chapter 11, “Synthesizer Section.”

Cannot find “x” intersection for “bucket 2” of the span accuracy calibration sweep. This error indicates a possible failure of the sweep generator, span attenuator, or main/FM coil sweep switches on the Al4 frequency control assembly. Refer to Chapter 11, “Synthesizer Section.”

General Troubleshooting 7-27