Lincoln Electric IDEALARC DC-600 Service Manual page 89

F-45
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
CONSTANT CURRENT MODE - NO LOAD
TROUBLESHOOTING AND REPAIR
50 volts
This is the typical DC open circuit voltage
waveform generated from a properly operat-
ing machine. Note that each vertical division
represents 50 volts and that each horizontal
division represents 2 milliseconds in time.
Note: Scope probes connected at machine
output terminals: (+) probe to positive termi-
nal, (-) probe to negative terminal.
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep .....2 ms/Div.
Coupling.............................DC
Trigger.........................Internal
IDEALARC
CH1
2ms
® DC-600
F-45
0 volts