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Input Buffer
Calibrator stores all received data in the input buffer. The buffer holds 250 characters. The
characters are processed on a first in, first out basis.
8.4 Remote Commands and Error Codes
The following tables list all commands, and their descriptions, that are accepted by the
calibrator.
Table 5: Common Commands
Command Description
*CLS *CLS (Clear status.) Clears the ESR, the error queue, and the RQS bit in the status byte.
Terminates pending Operation Complete commands
*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 the manufacturer, model number, and firmware revision level
of the Calibrator.
*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 command causes program
execution to pause until all operations are complete.
*RST Resets the state of the instrument to the power-up state. This command holds off
execution of subsequent commands until it is complete.
*SRE Loads a byte into the Service Request Enable register.
*SRE? Returns the byte from the Service Request Enable register.
*STB? Returns the status byte.
*WAI Prevents further remote commands from being executed until all previous remote
commands have been executed.
Table 6: Calibrator Commands
Command Description
CAL_START Puts the calibrator in calibration mode
CJC_STATE Turns CJC on or off.
CJC_STATE? Returns the state of the CJC
CPRT_COEFA Sets the custom RTD coefficient A
CPRT_COEFA? Returns the custom RTD coefficient A
CPRT_COEFB Sets the custom RTD coefficient B
CPRT_COEFB? Returns the custom RTD coefficient B
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