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5730A
Operators Manual
Table 6-5. Commands (cont.)
*ESR?
Sequential command.
Description
Returns the byte from the Event Status Register and clears the register. The ESR is
described under "Check the Calibrator Status."
Parameter
None
Response
(Integer) Decimal equivalent of the register byte.
*ESR?
Example
Returns: "140" if bits 2 (QYE), 3 (DDE), and 7 (PON) are set (1) and the rest of the bits
are reset (0). (See "Check the Calibrator Status" for details.)
EXPLAIN?
Sequential command.
Description
Explains a fault code. This command returns a string that explains the fault code
furnished as the parameter. The fault code (same as the parameter) is originally obtained
by sending the FAULT? query.
Parameter
The fault code (an integer).
Response
(String) An explanation of the fault code.
EXPLAIN? 224
Example
Returns:
Output Tripped To Standby
EXTGUARD
Overlapped command, ignored if not in remote.
Description
Parameter
Sets the Calibrator to internal or external guard. (The same as pushing EX GRD in local
operation.) The default is internal guard.
ON
(Sets the Calibrator to external guard)
OFF
(Sets the Calibrator to internal guard)
EXTSENSE
Overlapped command, ignored if not in remote.
Description
Parameter
Selects internal or external sensing. (The same as pushing EX SNS in local operation.)
The default if internal sensing.
ON
(Sets the Calibrator to external sensing)
OFF
(Sets the Calibrator to internal sensing)
FAULT?
Sequential command.
Description
Returns the earliest fault code contained in the Calibrator fault queue. After the fault code
is received, use the EXPLAIN? command to find out the meaning of the fault code. A
table of fault codes is also included in Appendix A of this manual.
A zero value is returned if there are no faults, so to read the entire contents of the fault
queue, repeat FAULT? until the response is "0."
6-32
Parameter
None
Response
(Integer) The fault code