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Current Adjustment Current output uses an internal resistance value to calibrate all channels.
This resistance value is approximately 244 Ω.
Note You may also use an external resistance value on each channel for current
output calibration. If you wish to specify an external resistor value, you
must send the
DIAGnostic:CALibration:OUTPut CHANnel command and
perform the adjustment at each channel output. Any resistor value may be
used but values in the range of 50 Ω to 500 Ω are recommended.
To set the internal resistance value use the following CALibration
commands:
CALibration:CONFigure:RESistance?
CALibration:VALue:RESistance
The resistance value set, either internal or external, is not stored.
When using the internal resistor value, the general procedure is:
1. Make the connections shown in Figure D-4.
2. Send the
CALibration:CONFigure:RESistance? query to the module
and read the response until a 1 is returned (typically the first query
response).
3. Read the resistance on the DMM.
4. Send the DMM value read to the module using the
CALibration:VALue:RESistance command.
The resistor value is only set once for current calibration of all channels.
If you are using an external resistor value, for each channel:
1. Send the
CALibration:CONFigure:RESistance? query to the module
and read the response until a 1 is returned (typically the first query
response).
2. Measure the channel’s external resistor value on the DMM.
3. Send the DMM value read to the module using the
CALibration:VALue:RESistance command.
159 Voltage/Current Output Adjustment Appendix D