Calibration only requires these simple steps:
1. - With the VREF module connected to the testing machine' s strain channel input, set VREF to OV and zéro the testing machine' s strain channel. This is the zéro reference.
2. - Set VREF to 10V and calibrate the full scale extensometer value on the testing machine' s strain channel. This is the calibrated full scale.
3. - If your testing machine requires returning to 0V after setting full scale, set VREF back to 0V and zéro the testing machine' s strain channel.
4. - Reconnect the extensometer' s signal conditioner to the testing machine and you' re ready to go.