MicroStep Start Shaphon SH-HC31 - Connection (Plasma Mode) with Voltage Divider AHD1

The connection (plasma mode) of SH-HC31 and voltage divider box AHD1
If plasma power source is original arc voltage(1:1) , then connect –(20~200)V input.
If plasma power source is 50:1 arc voltage, then connect –(0.1~5)V. And open the voltage
divider box, break the jumper JP2 and connect JP1.