User`s guide

Instrument Errors
201, "Memory lost: stored state"
202, "Memory lost: power-on state"
203, "Memory lost: stored readings"
221, "Settings conflict: calculate limit state forced off"
223, "Settings conflict: trig source changed to IMM"
251, "Unsupported temperature transducer type"
263, "Not able to execute while instrument is measuring"
291, "Not able to recall state: it is empty"
305, "Not able to perform requested operation"
311, "Not able to specify resolution with Auto range"
514, "Not allowed"
514, "Not allowed; Instrument locked by another I/O session"
521, "Communications: input buffer overflow"
522, "Communications: output buffer overflow"
532, "Not able to achieve requested resolution"
540, "Cannot use overload as math reference"
550, "Not able to execute command in local mode"
624, "Unable to sense line frequency"