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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Programmable Channel Calibration 6-5
running a critical test, now is the time to exit. Select “Yes” if it is OK to continue,
or “No” if DRM calibration mode should be exited.
Access the Calibrate Function to be performed using the Calibrate Function drop-
down list. From this list, select the function on the T940 DRM to be calibrated. The
sections to follow describe the individual procedures in detail.
ADC Reference (via EXTERNAL FORCE)
For DR3E, DR9 and UR14 only, the
ADC Reference
calibration is used to
measure the reference voltages used to calibrate the
ADC + Monitor
path.
Connect the DC calibrator to the EXTERNAL FORCE input on either DRA or DRB
(if installed). The Export button can be used to save the calibration factors into a
text file for examination and later restore, e.g., File | Load DRA Calibration.
Select Calibrate Function
Equipment: Basic Setup Procedure:
1. Place a check mark next the ADC Reference menu item on the
Calibrate Function menu.