This is the typical DC open circuit voltage wave-
form generated from a properly operating
machine. Note that each vertical division repre-
sents 20 volts and that each horizontal division
represents 2 milliseconds in time. The machine
was loaded with a resistance grid bank. The
grid bank meters read 650 amps at 44 VDC.

Note: Scope probes connected at machine out-
put terminals: (+) probe to positive terminal, (-)
probe to negative high inductance terminal.

SCOPE SETTINGS

Volts/Div.....................20V/Div.
Horizontal Sweep.....2 ms/Div.
Coupling ............................DC
Trigger .........................Internal

TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED

CONSTANT VOLTAGE MIG MODE

0 volts

2 ms

20 volts