Normal Open Circuit Voltage Waveform - Lincoln Electric SP-100 Service Manual

F-9
10 volts/Div
This is the typical output voltage waveform generated
from a properly operating machine. Note that each
vertical division represents 10 volts and that each hor-
izontal division represents 20 milliseconds in time.
Note: Scope probes connected at machine output ter-
minals. Positive probe to (+) terminal, negative probe
to (–) terminal.
SP-100
TROUBLESHOOTING & REPAIR

NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM

20 ms/Div
SCOPE SETTINGS
Volts/Div ........................................................10/Div
Horizontal Sweep .....................................20 ms/Div
Coupling .............................................................DC
Trigger..........................................................Internal
C1
0
volts