Calibration; Description Of Variable Resistors - Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG Hardware Manual

4. Calibration

The OME-A-822PGL/PGH is factory calibrated for optimum performance. Recalibration is
suggested for high vibration environments.
calibrating the OME-A-822PGL/PGH.
One 6 digit multimeter
One stable voltage source (4.9988V)
Diagnostic program : this program included with the
OME-A822PGL/PGH.

4.1 Description of Variable Resistors

There are seven variable resistors(VRs) on the OME-A-822PGL/PGH used for calibration,
they are described below.
VR Num. Description
VR1 A/D offset adjustment
VR2 A/D gain adjustment
VR3 D/A channel 0 gain adjustment
VR4 D/A channel 1 gain adjustment
VR5 D/A reference voltage adjustment
VR6 A/D unipolar offset adjustment
VR7 A/D programmable amplifier offset adjustment
OME-A-822PGL/PGH Hardware Manual ---- 41
The following items are required for