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Chapter 5 Error Messages
Instrument Errors
5
Instrument Errors
501 to 504 501: Cross-isolation UART framing error
502: Cross-isolation UART overrun error
503: Cross-isolation UART parity error
504: Cross-isolation UART noise error
These errors indicate either an internal hardware failure or a defect in the
firmware controlling interactions with the GPIB and RS-232 logic circuits
.
The isolation between chassis ground circuits and floating circuits is
controlled by an optical isolation barrier and a serial link.
514 Not able to execute command while GPIB selected
The SYST:LOCAL and SYST:RWLOCK commands are valid only when the
RS-232 interface is selected.
522 I/O processor output buffer overflow
This error indicates either an internal hardware failure or a defect in the
firmware controlling interactions with the GPIB and RS-232 logic circuits.
523 I/O processor received unknown code
This error indicates either an internal hardware failure or a defect in the
firmware controlling interactions with the GPIB and RS-232 logic circuits.
580 Reference phase-locked loop is unlocked
The PHAS:UNL:ERR:STAT has been enabled (“on”) and the internal
phase-locked loop that controls the frequency is currently unlocked.
This error is most likely to occur when the external reference is out of
lock range.
590 I/O processor had unexpected reset
This error indicates either an internal hardware failure or a defect in the
firmware controlling interactions with the GPIB and RS-232 logic circuits.
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