Troubleshooting & repair – Lincoln Electric POWER-ARC 4000 SVM103-A User Manual
Page 60
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POWER-ARC 4000
TROUBLESHOOTING & REPAIR
F-19
SCOPE SETTINGS
Volts/Div ....................50V/Div.
Horizontal Sweep ....5 ms/Div.
Coupling ............................DC
Trigger .........................Internal
CH1
0 volts
5 ms
20 volts
This is the typical AC output voltage
generated from a properly operating
machine. Note that each vertical
division represents 50 volts and that
each horizontal division represents 5
milliseconds in time.
Note: Scope probes connected at
machine 115 VAC receptacle.
1 Period = 16.2 ms @ 3700 rpm
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (115 VAC SUPPLY)
HIGH IDLE – NO LOAD
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