Table 3.
Voltage Measurement Verification
Level Range
Limit Range and
Limit
Test Point
As-Found Measurement Test Limit
(% of V Offset)
10 V
6 A
0.1 V
0.1% + 15 mV
10 V
1.
Set the first specified level range, limit range, and limit on the NI 4113.
2.
Set the level on the NI 4113 to the first specified test point.
3.
Compare a NI 4113 voltage measurement to the voltage measurement test limits.
a)
Take a voltage measurement using the DMM, and take a voltage measurement using
the NI 4113.
b)
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
)
c)
Verify the NI 4113 measurement falls within the test limits.
4.
Repeat the previous two steps for each test point specified in the level range.
5.
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 –
Sense +
+
–
+
–
Precision
Shunt
DMM
Voltage
Mode
2.
Set the
niDCPower Output Function
property or
NIDCPOWER_OUTPUT_FUNCTION
attribute to DC Current for the NI 4113.
NI PXIe-4113 Calibration Procedure
|
© National Instruments
|
7
