Lincoln Electric SVM155-A Welder User Manual


 
F-41 F-41
NORMAL OPEN CIRCUIT VOLTAGE
WAVEFORM - NO LOAD
TROUBLESHOOTING & REPAIR
MULTI-SOURCE
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0 volts
2 ms
50 volts
This is the typical DC open circuit volt-
age waveform generated from a properly
operating machine. Note that each ver-
tical division represents 50 volts and that
each horizontal division represents 2 mil-
liseconds in time.
Note: Scope probes connected at
machine output terminals: (+) probe to
positive terminal, (-) probe to negative
terminal.
Volts/Div.......................50 V/Div.
Horizontal Sweep......2 ms/Div.
Coupling..............................DC
Trigger..........................Internal
Scope Settings