National Instruments NI 9209, Calibration Procedure

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8 | ni.com | NI 9209 Calibration Procedure
f. Call and configure the NI 9209 gain instance of the adjustment function according to
Table 7 with the input terminal configuration set to Differential.
g. Set the calibrator to Standby mode (STBY).
h. Repeat steps d through g for each calibration voltage in the array.
i. Repeat steps d through h for each channel.
j. Repeat steps d through i with the input terminal configuration set to
Single-Ended/RSE as shown in Figure 2.
k. Disconnect the calibrator from the NI 9209.
l. Short the voltage channels to the NI 9209 AIGND.
m. Call the DAQmx Adjust 9209 Offset Calibration for the physical channel(s) adjusted
in the RSE and Differential sections. For example, if you adjusted all the channels,
then the physical channels should be cDAQ1Mod8/ai0:31.
Note
If adjusting the channel(s) in differential and single-ended mode, the physical
channel(s) should be a union of the channels specified in both configurations.
n. Close and commit the calibration session.
4. Remove the connections from the NI 9209.
EEPROM Update
When an adjustment procedure is completed, the NI 9209 internal calibration memory
(EEPROM) is immediately updated.
If you do not want to perform an adjustment, you can update the calibration date and onboard
calibration temperature without making any adjustments by initializing an external calibration
,
setting the C Series calibration temperature, and closing the external calibration.
Reverification
Repeat the
Verification
section to determine the As-Left status of the device.
Note
If any test fails Reverification after performing an adjustment, verify that you
have met the
Test Conditions
before returning your device to NI. Refer to
Worldwide
Support and Services
for assistance in returning the device to NI.
Table 7. Gain Adjustment Configuration
Physical Channel Reference Value
cDAQMod8/ai
x
The reference value from the array of adjustment points