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NI PXI-4110 Calibration Procedure
Adjusting Voltage Programming Accuracy
To adjust voltage programming, compare a set of requested voltage output points to voltage
points reported by an external DMM. Refer to the Figure 1 for the necessary connections.
Table 17 outlines the voltage setpoints that you must request and measure for each range. Take
measurements using the external DMM at each voltage set point.
To ensure the system has had adequate time to settle, wait one second after requesting a new
voltage before taking a measurement with the DMM.
Use the niDCPower Cal Adjust Voltage Level VI (
niDCPower_CalAdjustVoltageLevel
function) to calculate the new calibration coefficients. Pass the voltage setpoints requested by
the NI 4110 to the Requested Outputs input of the VI, and pass the voltage values measured by
the DMM to the Measured Outputs input of the VI. Call this VI or function once per range.
Table 17.
NI 4110 Output Parameters for Voltage Programming
Accuracy Adjustment
Channel
Iteration
Output (V)
Current Limit (A)
0
1
0
0.5
2
3
3
6
1
1
0
2
10
3
20
2
1
0
2
-10
3
-20
