346 Chapter7
General Troubleshooting
Error Messages
593 LOG TUNE Limiter calibration tune error from DC logger
calibration.
594 LOG OFST Attenuator calibration offset error from DC logger
calibration.
595 LOG ATTN Attenuator calibration absolute error from DC logger
calibration.
596 LOG FID Fidelity error from DC logger calibration.
597 LOG OFST Fidelity offset error from DC logger calibration.
598 LOG OFST Fidelity offset unstable from DC logger calibration.
599 LOG GAIN Fidelity gain error from DC logger calibration.
System Errors (600 to 651)
ADC timeout errors occur if the A2 controller assembly
frequency counter is faulty. Refer to Chapter 8 ,
“ADC/Interface Section.”
600 SYSTEM Hardware/firmware interaction; check other errors.
601 SYSTEM Hardware/firmware interaction; check other errors.
650 OUTOF RG ADC input is outside of the ADC range.
651 NO IRQ Microprocessor is not receiving interrupt from ADC.
Digital and Checksum Errors (700 to 799)
EEROM Checksum Errors (700 to 704)
Faults on the A2 controller assembly can cause these
errors. Refer to Chapter 10 , “Controller
Section.”Although some of these errors might result in
a blanked display, it is possible to read these errors over
GPIB. Refer to “Troubleshooting to a Functional
Section” on page 324.
The EEROM on the A2 controller assembly is used to
store data for frequency response correction, elapsed
time, focus, and intensity levels. Error codes from
700 to 703 indicate that some part of the data in
EEROM is invalid. An EEROM error could result from
either a defective EEROM or an improper sequence of
storing data in EEROM. Check the EEROM with the
following steps:
1. Place the WR PROT/WR ENA jumper on the A2
controller assembly in the WR ENA position.
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