5.
Calculate the lower and upper current output test limits using the following formula:
Current Output Test Limits
=
Test Point
± (|
Test Point
| ×
% of Current
+
Offset
)
6.
Verify that the recorded DMM value falls within the test limits.
7.
Calculate the lower and upper current measurement test limits using the following
formula:
Current Measurement Test Limits
=
DMM Measured Current
± (|
DMM
Measured Current
| ×
% of Current
+
Offset
).
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. For zero
current test points, disconnect all external equipment from the I/O connector on the
NI 4141 and take a current measurement solely with the NI 4141, in order to ensure that
the output current is zero. In calculations for zero current test points, substitute 0 A for
the
DMM Measured Current
.
10. If more than one level range is specified, repeat the previous steps using the values
specified in each level range.
Remote Sense
Connecting and Configuring Equipment for Voltage Remote
Sense Accuracy Verification
1.
Make the necessary connections for this procedure, as shown in the following figure.
Figure 4.
Voltage Remote Sense Output Verification Connection Diagram
Load3
Load2
Load1
+
–
DMM
Load Voltage Measurements
DMM
LO Lead Drop Measurements
+
–
NI-DCPower Device
Sense LO
Sense HI
HI
LO
DMM1
Voltage
Mode
DMM2
Voltage
Mode
2.
Set the
niDCPower Sense
property or
NIDCPOWER_ATTR_SENSE
attribute to Remote.
3.
Set the
niDCPower Output Function
property or
NIDCPOWER_OUTPUT_FUNCTION
attribute to DC Voltage for the NI 4141.
NI PXIe-4141 Calibration Procedure
|
© National Instruments
|
9
