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NI 9227 Calibration Procedure
Phase Matching Verification
Complete the following procedure to determine the As-Found status of the NI 9227.
1.
Connect the NI 9227 to the function generator as shown in Figure 3.
Figure 3.
Phase Matching Verification Connections
2.
Configure function generator according to Table 8.
3.
Set the function generator frequency to a value indicated in Table 11.
4.
Enable the function generator.
5.
Acquire samples.
a.
Create and configure an AI current task according to Table 9.
b.
Configure the task timing according to Table 10.
c.
Start the task.
Table 8.
Function Generator Configuration for Phase Matching Verification
Signal Type
Amplitude (VPK)
Frequency (kHz)
Sinewave
9
20
Table 9.
NI 9227 Configuration for Phase Matching Verification
Physical Channels
Channel Configuration
AI0:3
DC Coupled
Table 10.
NI 9227 Configuration for Phase Matching Verification
Sample Mode
Samples Per Channel
Rate (kS/s)
Finite Samples
25000
50
NI 9227
F
u
nction Gener
a
tor
HI
50
Ω
LO
AI1
–
+
AI0
–
+
AI2
–
+
AI
3
–
+
50
Ω
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