User`s guide

Calibration • 29
6.3 Bipolar A/D Adjustment
1. Set jumper JP1 to "10V" and JP2 to "BI" position.
2. Short the A.GND and AI0 ( Channel 0 analog input).
3. Trim VR3 until the reading of the A/D conversion data flickers
between 2047 and 2048.
4. Trim the VR1 until the reading of the A/D conversion data flickers
between 2047 and 2048.
5. Set Gain as x1, and applied +5V voltage to AI0. Adjust VR2 until the
reading of the A/D conversion data flickers between 4094 and 4095.
6.4 Uni-polar A/D Adjustment
1. Set jumper JP1 to "10V" and JP2 to "UN" position.
2. Short the A.GND and AI0 ( Channel 0 analog input).
3. Trim the VR3 until the reading of the A/D conversion data flickers
between 0000 and 0001.
4. Set Gain as x1, and applied +10V voltage to AI0. Adjust VR4 until the
reading of the A/D conversion data flickers between 4094 and 4095.