293
Chapter 5 Error Messages
Instrument Errors
4
5
Instrument Errors
501 to 502 501: Cross-isolation UART framing error
502: Cross-isolation UART overrun error
These errors indicate an internal hardware failure.
The isolation between
chassis ground circuits and floating circuits is controlled by an optical
isolation barrier and a serial link.
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.
33210A users guide.book Page 293 Wednesday, July 16, 2008 11:16 AM
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