The board must be supplied with 12 V on +VCC and -12 V on -VCC.
Gain adjustment
The AMP200 is composed of two cascaded amplifiers: a front-end amplifier with a fixed gain of 5 and a buffer with an adjustable gain from 1 to 100. The buffer gain is set using the GAIN potentiometer.
Input offset adjustment
Input offset voltage can be adjusted within ±100 mV with the OFFSET trimmer. Response is linear with about 15 mV per turn. If input offset adjustment is not required, it can be disabled by setting the OFFSET jumper to OFF. This improves the input voltage noise floor below 1 kHz.
AC / DC coupling
AC or DC input coupling can be selected using the DC / AC switch.
