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F-98TROUBLESHOOTING & REPAIRF-98

NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (STICK)

MAX CONTROL POT - HIGH IDLE - NO LOAD

CH1

0 volts

50V5ms

This is the typical DC open circuit out- put voltage generated from a properly operating machine. Note that each vertical division represents 50 volts and that each horizontal division rep- resents 5 milliseconds in time. NOTE: Scope probes are connected at weld output terminals.

 

SCOPE SETTINGS

 

Volts/Div

50V/Div.

 

 

 

 

Horizontal Sweep

5 ms/Div.

 

 

Coupling

DC

 

 

Trigger

Internal

 

RANGER 305D

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Image 152
Lincoln Electric SVM175-A service manual 98TROUBLESHOOTING & REPAIRF-98, Normal Open Circuit Voltage Waveform Stick