User manual

Chapter 5: Calibration
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Calibration
Overview
This chapter contains information on the calibration procedures for the
A/D and D/A subsystems on the PowerDAQ series of boards.
When to calibrate
These procedures should be performed at six-month intervals. It is
highly recommended to send board back to OMEGA, Inc. calibration
facility for recalibration.
Note Allow the host PC and the board to warm up for at
least one hour before calibration.
Equipment required
Precision voltage source with range +/-10V, absolute accuracy better
than 0.005%, resolution 100 uV or better. Any type of PowerDAQ
screw terminal.
PD CAL Program
The PowerDAQ calibration software is included with the CD. The
PD_Cal program allows you to recalibrate the board. All boards shipped
are fully calibrated and do not require additional calibration.
The PD CAL program is located in the PowerDAQ\Applications directory
or can be accessed by selecting Programs ! PowerDAQ !
!!
!
Calibration Software from the Start menu.
See online help included with the calibration program.
PowerDAQ boards stores calibration values for each range and each
gain. Driver loads calibration values stored in EEPROM each time when
user application sets up analog input configuration loads.