Lincoln Electric DC-655 service manual Scope Settings

Models: DC-655

1 109
Download 109 pages 42.44 Kb
Page 85
Image 85

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

F-43

F-43

TROUBLESHOOTING & REPAIR

NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM

CONSTANT CURRENT MODE – NO LOAD

0 volts

50 volts

2 ms

This is the typical DC open circuit voltage 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 positive terminal, (-) probe to neg- ative high inductance terminal.

SCOPE SETTINGS

Volts/Div

50V/Div.

Horizontal Sweep

2 ms/Div.

Coupling

DC

Trigger

Internal

 

 

IDEALARC DC-655

Page 85
Image 85
Lincoln Electric DC-655 service manual Scope Settings