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TROUBLESHOOTING & REPAIR |
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TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED
DC TIG MODE
CAUTION
HIGH VOLTAGE / HIGH FREQUENCY can damage test equipment.
•Perform all voltage and waveform checks with high frequency circuit OFF.
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CH1
0 volts
20 volts | 2ms |
MACHINE LOADED TO 200 AMPS AT 50 VDC
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This is a typical DC (+) output voltage wave- form generated from a properly operating machine. Note that each vertical division represents 20 volts and that each horizontal division represents 2 milliseconds in time. The machine was loaded with a resistance grid bank. The TIG 255 display read 200 amps at 50VDC.
Note: Scope probes connected at machine
output studs: (+) probe to electrode,
SCOPE SETTINGS
Volts/Div | 20 V/Div. |
Horizontal Sweep | 2 ms/Div. |
Coupling | DC |
Trigger | Internal |
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