Operating Instruction
95980775
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EN
Measuring Dwell Angle
1. Connect the black test lead to the COM
jack, and the red test lead to the
jack. (Note: The polarity of the red lead is
positive “+”.)
2. Set the range switch to
position.
3. Press the CYL button until the number of
cylinders of the engine to be tested ap-
pears on the display. ( The meter displays
the number of cylinders followed by
“CYL”.)
4. Connect the black test lead to ground or
the negative terminal of the battery, and
the red test lead to the low voltage ter-
minal of the distributor or the negative
terminal of the ignition coil.
5. Start the engine and read the reading on
the display.
Note:
1. The input voltage must be between 3Vp
and 50Vp. If the voltage is too low, it will
be impossible to perform dwell measure-
ment.
2. Reading’s stability will decrease if the ro-
tation speed of the engine is too low.
3. The polarity of the input voltage must be
correct, otherwise it will be impossible to
perform measurement.
Ignition Coil
Ground
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