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NI 9265 Calibration Procedure
Verification
The following performance verification procedure describes the sequence of operation and
provides test points required to verify the NI 9265. The verification procedure assumes that
adequate traceable uncertainties are available for the calibration references.
Accuracy Verification
Complete the following steps to determine the As-Found status of the NI 9265.
1.
Set the DMM to Standby mode (STBY).
2.
Connect the NI 9265 to the bench-top power supply and the DMM as shown in Figure 1.
Figure 1.
NI 9265 Current Accuracy Connections
3.
Set the DMM to read DC current in the 20 mA range.
4.
Acquire a sample.
a.
Create and configure an AO current task on the NI 9265 according to Table 2.
b.
Start the task.
c.
Generate a current output according to Table 3.
d.
Wait the appropriate amount of time for the DMM measurement to settle.
e.
Read the NI 9265 output current measurement from the DMM.
f.
Clear the task.
Table 2.
NI 9265 Configuration for Current Accuracy Verification
Range (A)
Scaled Units
Custom Scale
Minimum
Maximum
0
0.02
Amps
None
Table 3.
NI 9265 Output Configuration
Samples Per Channel
Timeout
1
10.0
NI 9265
DMM
HI
LO
Power
Su
pply
+
–
COM
x
AO
x
Power
Su
pply COM
V
su
p
