User Manual

“GPI Calibration” dialog box Chapter 7. Dialog boxes/Software applications
MTX-MRX Editor User Guide
227
Calibration procedure
1. Connect your external device to the MTX/MRX’s [GPI] connector.
2. Select the check box of the channel numbers for which you want to
perform calibration.
If you want to select all channels, select the [All Ports] check box.
3. To specify the detection range, increase the input from the external
device to the maximum and click the [Max] button; then decrease the
input to the minimum and click the [Min] button.
This lets you specify the optimal detection range as appropriate for voltage drop
caused by wiring or due to the specifications of your devices.
• The threshold for on/off switching will be the center value between the maximum and
minimum input voltage values (the sum of the maximum value and minimum value,
divided by 2). To prevent malfunctions, you should allow plenty of range for
detection.
• If the voltage has dropped because of cable length or noise, adjust the maximum
and minimum input voltage values. Since voltage may become unstable, configure
and set up your external circuit to ensure that there is ample distance between the
maximum and minimum values.
NOTE