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Current output adjustment uses two of the CALibration subsystem queries.
Current adjustment requires voltage measurements.
CALibrationn:CONFigure:CURRent?
CALibration
n:VALue:CURRent? <value>
Once the calibration resistance value is set as described earlier, the general
procedure for each channel current output adjustment is:
1. Make the connections shown in Figure D-5 or D-6.
2. Send the
CALn:CONF:CURR? query to the module and read the
response until a 1 is returned (typically the first query response).
3. Read the voltage output on the DMM.
4. Send the DMM value read with the
CALn:VAL:CURR? <value>
query.
5. Enter the query response.
6. Repeat steps 3, 4, and 5 until the
CALn:VAL:CURR? <value> query
returns a 0.
7. Repeat steps 1 through 6 for each channel.
The first query,
CALn:CONF:CURR?, sets the channel to the calibration
mode and returns a 1 when the channel is ready for calibration. When a 1 is
returned, the channel output voltage is set to the first adjustment point.
Read the output voltage on the DMM and return the value obtained using
the
CALn:VAL:CURR? <value> query. This query returns an integer
indicating the calibration state of the channel. A value other than 0 or 2
from this query indicates additional values are needed.
Figure D-4. Resistance Calibration Connections (CAL)
Appendix D Voltage/Current Output Adjustment 160