Agilent Technologies 34972A User Manual page 234

Chapter 5 Error Messages
Instrument Errors
I/O processor: isolator framing error
501
I/O processor: isolator overrun error
502
Communications: RS-232 framing error
511
Communications: RS-232 overrun error
512
Communications: RS-232 parity error
513
514 (34970A only) RS-232 only: unable to execute using HP-IB
There are three commands which are allowed only with the RS-232
interface: SYSTem:LOCal, SYSTem:REMote, and SYSTem:RWLock.
514 (34972A only) Not allowed; Instrument locked by another I/O session
The requested operation is not allowed because another I/O session has
locked the instrument.
Communications: input buffer overflow
521
Communications: output buffer overflow
522
Not able to achieve requested resolution
532
The instrument cannot achieve the requested measurement resolution.
You may have specified an invalid resolution in the CONFigure or
MEASure? command.
Not able to null channel in overload
540
The instrument cannot store an overload reading (9.90000000E+37) as
the offset for Mx+B scaling using a null measurement.
Not able to execute command in local mode
550
The instrument has received a READ? or MEASure? command while in
the local mode.
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