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F-61 F-61
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 AC output voltage
waveform generated from a properly
operating machine. Note that each
vertical division represents 50 volts
and that each horizontal division rep-
resents 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
AC TIG MODE
HIGH VOLTAGE / HIGH FREQUENCY can damage test equipment.
• Perform all voltage and waveform checks with high frequency circuit OFF.
CAUTION