Omega Engineering OME-A8111 manual D/A Calibration Steps, A/D Calibration Steps, DI/O Testing

3.2 D/A Calibration Steps

1.Run A8111CAL.EXE

2.Connect D/A channel0,, pin 30 of CN1 to DVM

3.Adjust VR1 until DVM=5.0000V

4.Press “Enter" key

5.Adjust VR2 until DVM=0.0000V

3.3 A/D Calibration Steps

1.Press “Enter" key

2.Connot A/D Channel 0 to analog ground, CN1-Pin1 to CN1-Pin20.

3.Input stable DC 4.9988V to A/d channel 1, pin2 of CN1.

4.Connect DVM to TP1(-) & (+).

5.Adjust VR5 until DVM=0.0000V.

6.Press <Enter> Key.

7.Adjust VR4 until A/D data shows 4094 or 4095.

8.Press <Enter> Key

9.Adjust VR3 until A/D data shows 2047 or 2048.

10.Repeat step_3 to step_11 until:

A/D channel 0 input 4.9988VÎA/D reading 4094 or 4095. A/D channel 0 input 0 V ÎA/D reading 2047 or 2048.

11.Press <Enter> Key.

3.4DI/O Testing

12.Use 20-pin flat cable (OME-CA-2010, OME-CA-2020 Option) to link CN2 to CN3.

13.Press <Enter> Key.

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 30