Adjusted Specifications
Adjustment corrects the following specifications for the device:
•
Voltage programming accuracy
•
Current programming accuracy
•
Voltage measurement accuracy
•
Current measurement accuracy
Following the adjustment procedure automatically updates the calibration date and
temperature on the device.
Note
You do not need to separately adjust both measurement and output. The
architecture of the NI 4141 ensures that if measurement is accurate, then output is as
well, and vice versa.
Self-Calibrating
Complete the following steps to self-calibrate the device.
1.
Disconnect or disable all connections to the device.
2.
Ensure the device had 30 minutes to warm up with the PXI chassis fans set to HIGH.
3.
Initialize an NI-DCPower session.
4.
Call the self-calibration function.
5.
Close the NI-DCPower session.
Initiating the Adjustment Session
Initiate an external calibration session (a special type of NI-DCPower session) by calling
the niDCPower Initialize External Calibration VI or
niDCPower_InitExtCal
function.
(Optional) You can close the session and commit the new constants to hardware after you
complete each adjustment procedure.
Related Information
Closing the Adjustment Session
Connecting and Configuring Equipment for Voltage
Adjustment
1.
Make the necessary connections for this procedure, as shown in the following figure.
NI PXIe-4141 Calibration Procedure
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© National Instruments
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