NI 9225 Calibration Procedure
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© National Instruments
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5
Accuracy Verification
Complete the following procedure to determine the As-Found status of the NI 9225.
1.
Set the calibrator to Standby mode (STBY).
2.
Connect the NI 9225 to the calibrator as shown in Figure 1.
Figure 1.
Accuracy Verification Connections
3.
Set the calibrator voltage to a Test Point value indicated in Table 4.
4.
Set the calibrator to Operate mode (OPR).
5.
Acquire and average samples.
a.
Create and configure an AI voltage task according to Table 2.
b.
Configure the task timing according to Table 3.
c.
Start the task.
d.
Read samples from the NI 9225.
e.
Average the samples.
f.
Stop the task.
g.
Clear the task.
Table 2.
NI 9225 AI Voltage Task Configuration for Phase Matching
Physical Channels
Minimum
(V
rms
)
Maximum
(V
rms
)
Terminal
Configuration
AI0:3
-300
300
Differential
Table 3.
NI 9225 Voltage Task Timing Configuration for Phase Matching
Sample Mode
Samples Per Channel
Rate (kS/s)
Finite Samples
4167
50
NI 9225
C
a
li
b
r
a
tor
HI
LO
AI1
–
+
AI0
–
+
AI2
–
+
Summary of Contents for NI 9225
Page 1: ...NI 9225...
