Chapter 6 327
General Troubleshooting
System Analyzer Programming Errors (100 to 150)
755 SYSTEM Hardware/firmware interaction, square root error.
Check for other errors.
756 SYSTEM Hardware/firmware interaction, triple overflow. Check
for other errors.
757 SYSTEM Hardware/firmware interaction, BCD overflow. Check
for other errors.
758 SYSTEM Unknown system error.
759 SYSTEM Hardware/firmware interaction. Code invoked for
wrong instrument.
Fast ADC Error (760)
This error applies only to EC-series instruments and to
E-series instruments with fast ADC (Option 007).
760 NO FADC The FADC board did not respond properly to
initialization commands.
Option Module Errors (800 to 899)
These error codes are reserved for option modules, such
as the HP 85629 test and adjustment module and the
HP 85620A mass memory module. Refer to the option
module manual for a listing of error messages.
User-Generated Errors (900 to 999)
These error codes indicate user-generated errors.
900 TG UNLVL Tracking generator output is unleveled.
901 TGFrqLmt Tracking generator output unleveled because START
FREQ is set below tracking generator frequency limit
(300 kHz).
902 BAD NORM The state of the stored trace does not match the
current state of the spectrum analyzer.
903 A > DLMT Unnormalized trace A is off-screen with trace math or
normalization on.
904 B > DLMT Calibration trace (trace B) is off-screen with trace
math or normalization on.
905 EXT REF Unable to lock cal oscillator when set to external
frequency reference. Check that the external 10 MHz
reference is within tolerance.
906 OVENCOLD The oven-controlled crystal oscillator (OCXO) oven is
cold.
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