Data Translation DT9824, User Manual, Page: 71 / 102

Calibration
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Using the Auto-Calibration Procedure
Note: Ensure that you let the DT9824 module warm-up for a minimum of 1 hour before
calibrating it.
Auto-calibration is the easiest to use and is the recommended calibration method. To
auto-calibrate the analog input subsystem, do the following:
1. From the Automatic Calibration area at the bottom of the window, select the channel to
calibrate from the
Type of Calibration drop-down list box.
2. Click the Start button.
The utility prompts you to connect 0 V to the channel to calibrate the offset at different gain
settings and at different frequencies.
When calibrating 0 V, it is preferred that you connect a dead-short wire to the channel rather than
supplying 0 V through the voltage source.
3. Ensure that you supply the correct voltage to the selected channel, and then click OK .
The utility prompts you to connect various voltages to the channel to calibrate the gain at different
gain settings and at different frequencies.
4. Repeat steps 2 to 4 for the remaining A/D channels on the module, following the
on-screen prompts.
Note: At any time, you can click Restore Factory Settings to reset the A/D calibration
values to their original factory settings. This process will undo any auto or manual calibration
settings.