CH1_IN+A1CH1_IN-A2CH2_IN+A3CH2_IN-A4CH3_IN+A5CH3_IN-A6GND_CH1B1GND_CH2B2GND_CH3B3CH1_OUT+C1CH1_OUT-C2CH2_OUT+C3CH2_OUT-C4CH3_OUT+C5CH3_OUT-C6