Table 2. Voltage Output and Measurement Verification
Level
Range
Limit
Range
and Limit
Test
Point
DMM
Range
As-Found
Output Test
Limit (% of
V
Offset)
As-Found
Measurement Test
Limit (% of V
Offset)
10 V
1 mA
-10 V
10 V
0.013% +
150 μV
0.013% + 150 μV
-7.5 V
10 V
5 V
10 V
-2.5 V
10 V
0 V
100 mV
2.5 V
10 V
5 V
10 V
7.5 V
10 V
10 V
10 V
1.
Set the first specified level range, limit range, and limit on the NI 4141.
2.
Set the level on the NI 4141 to the first specified test point.
3.
Take a voltage measurement using the DMM, and take a voltage measurement using the
NI 4141.
4.
Record the values from the previous step.
5.
Calculate the lower and upper voltage output test limits using the following formula:
Voltage Output Test Limits
=
Test Point
± (|
Test Point
| ×
% of Voltage
+
Offset
)
6.
Verify that the recorded DMM value falls within the test limits.
7.
Calculate the lower and upper voltage measurement test limits using the following
formula:
Voltage Measurement Test Limits
=
DMM Measured Voltage
± (|
DMM
Measured Voltage
| ×
% of Voltage
+
Offset
). Record the test limits.
8.
Verify that the recorded NI 4141 value falls within the test limits.
9.
If more than one test point per level range is specified, repeat the previous steps for each
test point, from setting the level to the test point on the NI 4141 up to this step.
10. If more than one level range is specified, repeat the previous steps using the values
specified in each level range.
Current Output and Measurement
Connecting and Configuring Equipment for Current Verification
1.
Make the necessary connections for this procedure, as shown in the following figure:
NI PXIe-4141 Calibration Procedure
|
© National Instruments Corporation
|
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