Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG - Manual (Page 45)

4.3 A/D Calibration
1. Run the A82XDIAG.EXE
2. Press “Right Arrow Key” to select “CALIBRATION”
3. Press the “Down Arrow Key” to select “C. A/D REFERENCE” item.
4. Press the “Enter Key”
5. Input a stable 4.9988V to A/D channel 0, pin 1 of CN3
6. Adjust VR2 until the A/D data shown on the screen is between 4094 to 4095
7. Press the “ESC Key”
8. Select and Execute the “D. A/D OFFSET” item
9. Input a stable 0V to A/D channel 0, pin1 of CN3
10. Adjust VR1 until the A/D data shown on the screen is between 2048 to 2049
11. Press the “ESC Key”
12. Repeat step_3 to step_11 until there is no need to adjust VR2,VR1
13. Select and Execute “E. PGA OFFSET” item
14. Input a stable 0V to A/D channel 0, pin 1 of CN3
15. Adjust VR7 until the A/D data shown in screen between 2048 to 2049
16. Press “ESC Key”
17. Select and Execute “F. PGA REFERENCE” item
18. Input a stable 0V to A/D channel 0 , pin1 of CN3
19. Adjust VR6 until the A/D data shown on screen is between 0 and 1
OME-A-822PGL/PGH Hardware Manual ---- 43