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F-60 F-60
TROUBLESHOOTING & REPAIR
SQUARE WAVE TIG 355
CH1
0 volts
2 ms
50 volts
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep.....2 ms/Div.
Coupling ............................DC
Trigger .........................Internal
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.
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
DC TIG MODE
HIGH VOLTAGE / HIGH FREQUENCY can damage test equipment.
• Perform all voltage and waveform checks with high frequency circuit OFF.
CAUTION