Eeprom Update; Reverification; Accuracy Under Calibration Conditions - National Instruments NI-9225 Calibration Procedure

h. Repeat steps d through g for each point in the array.
i. Close the calibration session.
4. Disconnect the NI 9225 from the calibrator.

EEPROM Update

When an adjustment procedure is completed, the NI 9225 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
Note If any test fails Reverification after performing an adjustment, verify that you
have met the
Go for Support

Accuracy Under Calibration Conditions

The values in the following table are based on calibrated scaling coefficients, which are stored
in the onboard EEPROM.
The following accuracy table is valid for calibration under the following conditions:
• Ambient temperature 23 °C ±5 °C
• NI 9225 installed in slot 8 of an NI cDAQ-9178 chassis
• Slots 1 through 7 of the NI cDAQ-9178 chassis are empty
Table 13. NI 92
Percent of Reading (Gain Error)
±0.066%
* Range equals 425 V
Note For operational specifications, refer to the most recent NI 9225 Operating
Instructions and Specifications online at
10 | ni.com | NI 9225 Calibration Procedure
section to determine the As-Left status of the device.
Test Conditions before returning your device to NI. Refer to
for assistance in returning the device to NI.
25 Accuracy Under Calibration Conditions
DC
Percent of Range* (Offset Error)
±0.0123% (±52.3 mV)
.
ni.com/manuals
Where to