National Instruments NI 9225, Calibration Procedure

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ni.com | NI 9225 Calibration Procedure
6. Compare the per-channel averages to the limits in Table 4.
7. Set the calibrator to Standby mode (STBY).
8. Repeat steps 3 through 7 for each test point in Table 4.
9. Disconnect the calibrator from the device.
Note The test limits listed in Table 4 are derived using the values in Table 17.
Gain Matching Verification
Complete the following procedure to determine the As-Found status of the NI 9225.
1. Connect the NI 9225 to the function generator as shown in Figure 2.
Figure 2. Gain Matching Verification Connections
2. Configure function generator according to Table 5.
Table 4. NI 9225 Verification Test Limits for Accuracy
Range Test Point 1-Year Limits
Min
(V
rms
)
Max
(V
rms
) Location
Value
(V
DC
)
Lower Limit
(V
DC
)
Upper Limit
(V
DC
)
-300 300
Max 403.75 403.431250 404.068750
Mid 0.00 -0.052275 0.052275
Min -403.75 -404.068750 -403.431250
Table 5.
Function Generator Configuration for Gain Matching Verification
Signal Type Amplitude (V
pk
) Frequency (kHz)
Sinewave 9 20
NI 9225
F u nction
Gener a tor
HI
LO
AI1
–
+
AI0
–
+
AI2
–
+