Limora EM128 Mode D'emploi page 35

2. Set the rotary switch to the desired "DWELL" range according
to the cylinders of the engine to be measured
3. Connect the black test lead to the iron bars or the negative
pole of the battery, and the red test lead to the distributor
terminal of the ignition coil.
4. Start the engine to set it in idle-speed. Read the value of the
dwell angle on the LCD.
Testing Duty Cycle
1. Connect the black test lead to "COM" jack, red test lead to
"VΩ RPM" jack.
2. Set the rotary switch in „DUTY" position.
3. Connect the test leads to the circuit to be measured.
4. Read the reading on the display.
Measuring Tacho
1. Connect the black test lead to the "COM" jack and the red
test lead to the "VΩ RPM" jack.
2. Set the rotary switch to "RPM" (or "X 10 PRM") position.
3. Connect the black test lead to the iron bars or the negative
pole of the battery, and the red test lead to the distributor
terminal of the ignition coil.
4. Start the engine, read the reading on the display, divide this
reading by the number of cylinders, the result is the turning
speed of the engine.
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