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.
Figure 3.
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.
Verifying Current Output and Measurement
Compare a set of currents measured by the external DMM to both a set of current test points
requested by the NI 4141 and to the measured currents reported by the NI 4141.
Refer to the following table as you complete the following steps.
NI PXIe-4141 Calibration Procedure
|
© National Instruments
|
7
