3.2 D/A Calibration Steps
1. Refer Fig. 3-2 Wiring diagnostics
2. Run
A812DIAG.EXE
3. Press “Enter” key to start “CALIBRATION”
4. Connect CN2, pin 13 of CN2 (D/A Channel 0) and Pin 14 of CN2 (GND) to DVM (DC
Voltage Meter)
5. Adjust VR1 until DVM=4.9988V
6. Press “Enter" key
7. Connect D/A channel 1 Pin 15 of CN2 and Pin 14 of CN2 (GND) to DVM
8. Adjust VR2 until DVM=4.9988V
9. Press “Enter" key
3.3 A/D Calibration Steps
1. Refer Fig3-2 wiring diagnostics
2. Run A812DIAG.exe
3. Press <Enter> key until A/D calibration start
4. Adjust VR5 until shower 4094/4095
5. Press <Enter>
6. Adjuster VR3 until shower 2047/2048
7. Press <Enter>
8. Repeater step 4 to step 7 until A/D channel 0 equal 2047/2048 and A/D channel 1 equal
4094/4095
9. Measure A/D Calibration is O.K. Press <Enter> Key until A/D Amp calibration is start
10. Adjust VR4 until A/D channel 0 equal 2047/8
A-812PG Hardware Manual (Ver.1.2, Sep/2005, IPH-004-12) -----
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