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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Programmable Channel Calibration 6-11
Source/Sink Load
For DR3E, DR9 and UR14 only, the
Source/Sink Load
calibration is used to
measure the reference resistor used to calibrate the
Isource/Isink
and
IAL/IAH
levels. 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 Source/Sink Load menu item on the
Calibrate Function menu.
2. Verify that the Source/Sink Load calibrate function is now in focus.
Run Calibration
Equipment: Digital multimeter connected to DRA or DRB (if installed) via the
EXTERNAL FORCE input.