Ok, did a benchtest on the Lathe G540 and it does indeed NOT work. I called Gecko and will be sending that back to have a look at.
Just for the curious:
Working G540 VFD with 3000 in the Speed DRO measures:
7+9 Pin = 11.7 V
7+8 Pin = Pulses 6 V -8 V
8+9 Pin = Pulses 4 v -6 V
NON Working G540 VFD with 3000 in the Speed DRO measures:
7+9 Pin = 11.8 V
7+8 Pin = 8 mV
8+9 Pin = 11.8 V
Hope this saves someone elses hair someday.....
Thanks,
Dave