AH500 Module Manual measured is 9.95 V. Users can calibrate the channel by calibrating the gain and the offset. The users can get the gain for the calibration by means of the equations below. Gain=(Y2-Y1)/(X2-X1)=[9.95-(-0.05)]/(10-0)=1 Gain used for calibration=1/Gain=1/1=1 The users can get the offset for the calibration by means of the equations below. Offset=Y1= -0.05 Offset used for calibration=0-Y1=0.05 Signals after the calibration Original signals (X2, Y2) (10, 9.95 V) Digital value (X) Voltage (Y) (X: Digital value; Y: Analog signal) Example 2: The outputs sent by a channel are voltages in the range of -10.0 V to +10.0 V. The original signals are used.
The gain is 1, and the offset is 0. The digital value received by the channel is 0, and the voltage measured is 0 V. The digital value received by the channel is 10, and the voltage measured is 10.1 V. Users can calibrate the channel by calibrating the gain and the offset. The users can get the gain for the calibration by means of the equations below. Gain=(Y2-Y1)/(X2-X1)=[10.1-0]/(10-0)=1.01 Gain used for calibration=1/Gain=1/1.01=0.99 The users can get the offset for the calibration by means of the equations below. Offset=Y1=0 Offset used for calibration=0-Y1=0 3-8 10 V 10 Sig 1 (X1, Y1) (0, -0.05 V) -10 V