B&K Precision 2552-2559 - Programming Manual User Manual
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Notes
(1) The Power On (PON) bit is always turned on (1) when the unit is powered up.
(2) The User Request (URQ) bit is set true (1) when a soft key is pressed. An associated register
URR identifies which key was selected. For further details refer to the URR? query.
(3) The CoMmand parser Error bit (CME) is set true (1) whenever a command syntax error is
detected. The CME bit has an associated CoMmand parser Register (CMR) which specifies
the error code. Refer to the query CMR? for further details.
(4) The EXecution Error bit (EXE) is set true (1) when a command cannot be executed due to
some device condition (e.g. oscilloscope in local state) or a semantic error. The EXE bit has
an associated Execution Error Register (EXR) which specifies the error code. Refer to query
EXR? for further details.
(5) The Device specific Error (DDE) is set true (1) whenever a hardware failure has occurred at
power-up, or execution time, such as a channel overload condition, a trigger or a timebase
circuit defect. The origin of the failure may be localized via the DDR? or the self test *TST?
query.
(6) The Query Error bit (QYE) is set true (1) whenever (a) an attempt is made to read data from
the Output Queue when no output is either present or pending, (b) data in the Output Queue
has been lost, (c) both output and input buffers are full (deadlock state), (d) an attempt is
made by the controller to read before having sent an
before the response to the previous query was read (output buffer flushed).
(7) The ReQuest Control bit (RQC) is always false (0), as the oscilloscope has no GPIB
controlling capability.
(8) The OPeration Complete bit (OPC) is set true (1) whenever *OPC has been received, since
commands and queries are strictly executed in sequential order. The oscilloscope starts
processing a command only when the previous command has been entirely executed.