5500A
Operator Manual
6-4
TC_REF Sets whether the internal temperature sensor or an external reference value is used
for Thermocouple (TC) outputs and measurements.
TC_REF? Returns the source and value of the temperature being used as a reference for
thermocouple simulation and measurement.
TC_TYPE Sets the Thermocouple (TC) temperature sensor type.
TC_TYPE? Returns the thermocouple (TC) sensor type used for temperature simulations and
measurements.
TSENS_TYPE Sets the temperature sensor type when the output is set to a temperature with the
OUT command.
TSENS_TYPE? Returns the temperature sensor type.
Common Commands
*CLS (Clear status.) Clears the ESR, ISCR0, ISCR1, the error queue, and the RQS bit in
the status byte. This command terminates pending operation complete commands
(*OPC or *OPC?).
*ESE Loads a byte into the Event Status Enable register.
*ESE? Returns the contents of the Event Status Enable register.
*ESR? Returns the contents of the Event Status Register and clears the register.
*IDN? Identification query. Returns instrument model number, serial number, and firmware
revision levels for the main, front panel, inguard, and 5725A Amplifier CPUs.
*OPC Enables setting of bit 0 (OPC for "Operation Complete") in the Event Status Register
to 1 when all pending device operations are complete.
*OPC? Returns a 1 after all pending operations are complete. This commands causes
program execution to pause until all operations are complete. (See also *WAI.)
*OPT? Returns a list of the installed hardware and software options, including any 5725A
Amplifiers that are attached.
*PUD Protected user data command. This command allows you to store a string of bytes in
nonvolatile memory. This command works only when the CALIBRATION switch is in
the ENABLE position.
*PUD? Returns the contents of the *PUD (Protected User Data) memory.
*RST Reset. Resets the state of the instrument to the power-up state. This command holds
off execution of subsequent commands until it is complete. (Overlapped command.)
*SRE Loads a byte into the Service Request Enable register (SRE).
*SRE? Returns the byte from the Service Request Enable register.
*STB? Returns the status byte.
*TRG Changes the operating mode to thermocouple MEASURE, triggers a measurement,
and returns the value of the measurement. This command is equivalent to sending
"TC_MEAS;*OPC;VAL?".
*TST? Initiates a series of self-tests, then returns a "0" for pass or a "1" for fail. If any faults
are detected, they are logged into the fault queue where they can be read by the
ERR? query.
*WAI Wait-to-Continue command. This command prevents further remote commands from
being executed until all previous remote commands have been executed.
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