Normal Open Circuit Voltage Waveform (Dc Stick Mode - Lincoln Electric SQUARE WAVE SVM118-A Service Manual

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NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
HIGH VOLTAGE / HIGH FREQUENCY can damage test equipment.
• Perform all voltage and waveform checks with high frequency circuit OFF.
TROUBLESHOOTING & REPAIR
DC STICK MODE
CAUTION
50 volts
This is the typical DC (+) output volt-
age waveform generated from a
properly operating machine. Note
that each vertical division represents
50 volts and that each horizontal divi-
sion represents 2 milliseconds in
time.
Note: Scope probes connected at
machine output terminals: (+) probe
to electrode terminal, (-) probe to
work terminal.
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep.....2 ms/Div.
Coupling ............................DC
Trigger .........................Internal
SQUARE WAVE TIG 355
CH1
0 volts
2 ms
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