Lincoln Electric IDEALARC DC-600 Service Manual page 91

F-47
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
TROUBLESHOOTING AND REPAIR
CONSTANT VOLTAGE INNERSHIELD
MINIMUM OUTPUT SETTING - NO LOAD
20 volts
This is the typical DC open circuit voltage
waveform generated from a properly operat-
ing machine. Note that each vertical division
represents 20 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.....................20V/Div.
Horizontal Sweep .....2 ms/Div.
Coupling.............................DC
Trigger.........................Internal
IDEALARC
LINE
2ms
® DC-600
F-47
0 volts