7.
Update the measurement calibration constants by configuring and calling the niDCPower
Cal Adjust Voltage Measurement VI or
niDCPower_CalAdjustVoltageMeasurement
function.
a)
Input the DMM measurements as the
measured outputs
.
b)
Input the NI 4141 measurements as the
reported outputs
.
c)
Input the specified level range as the
range
.
Connecting and Configuring Equipment for Current
Adjustment
1.
Make the necessary connections for this procedure, as shown in the following figure.
Figure 7.
Current Verification or Adjustment Connection Diagram
NI-DCPower Device
Sense LO
Sense HI
HI
LO
DMM
Current
Mode
+
–
2.
Set the
niDCPower Output Function
property or
NIDCPOWER_OUTPUT_FUNCTION
attribute to DC Current for the NI 4141.
Adjusting Current Measurement
Compare a set of measured currents reported by the NI 4141 to the currents measured by an
external DMM.
Refer to the following table as you complete the following steps.
Table 7.
Current Measurement Adjustment
Level Range
Limit Range and Limit
Test Point
10 μA
10 V
10 μA
-10 μA
100 μA
10 V
100 μA
-100 μA
NI PXIe-4141 Calibration Procedure
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© National Instruments
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