![background image](http://html1.mh-extra.com/html/icp-das-usa/a-812pg/a-812pg_hardware-user-manual_3526494036.webp)
3.1 Calibration VR Description
There are seven VRs on the A-812PG. Calibration need to adjust all seven VRs.
VR Num.
Description
VR1
D/A channel 0‘s gain adjustment
VR2
D/A channel 1‘s gain adjustment
VR3
A/D‘s gain adjustment
VR4
A/D's Amplifier offset adjustment
VR5
A/D‘s offset adjustment
Fig. 3-2 Calibration wiring diagnostics
A-812PG Hardware Manual (Ver.1.2, Sep/2005, IPH-004-12) -----
36