I have an older Torchmate 3, from 2007, that is new to me. I have connected a Miller Spectrum 625 to the plasma table. I have everything working except the AVHC. The AVHC that I have is the older version, with the LED digital display (not blue or red LCD screen) and the rocker switches on the front of the box. I found that the fuse was blown when I bought the table for the arc voltage input and have replaced it. I have double checked the polarity from the plasma cutter. The Miller plasma cutter puts out a 0-3VDC signal scaled down with a 50:1 volt ratio to the real arc voltage at the torch. The display on the AVHC box is supposed to display the ARC voltage. Mine is displaying the actual voltage from the plasma cutter output, usually 2-3V.
Has anyone connected these brand plasma cutters to the torchmate? Also what is this Torchmate AVHC expecting for input vs. the actual arc voltage (is it expecting a scaled voltage or a 1:1 voltage relationship to the torch)?