Measuring Duty Cycle; Measuring Temperature; Measuring Dwell Angle - Facom 714A Manuel D'utilisation

of the red lead is positive "+". )
2. Set the range switch to
3. Connect the red test lead to the anode of the diode to be tested and the black test lead to the cathode of the diode.
4. The display shows the approximate forward voltage drop of the diode. If the connection is reversed, "OL" will be shown on the
display.

Measuring Duty Cycle

1. Connect the black test lead to the "COM" terminal and the red test lead to the "
2. Set the range switch to Duty position.
3. Connect the test leads across the signal source be tested.
4. Read the reading.
Note:
1. The voltage of input signal must be between 3V peak and 50V peak. If the voltage is too low, it is impossible to make measurement.
If the voltage exceeds 50V peak, the accuracy of the reading may be out of the specified accuracy range.
2. If the frequency of input signal is too low, reading's stability will decrease.
3. The polarity of the input voltage must be correct; otherwise it will be impossible to make measurement.

Measuring Temperature

NOTE:
To avoid possible damage to the meter or other equipment, remember that while the meter is rated for -20°C to +1000°C
and -4°F to 1832°F, the K Type Thermocouple provided with the meter is rated to 250°C. For temperatures out of that range, use a
higher rated thermocouple.
The K Type Thermocouple provided with the meter is a present, it is not professional and can only be used for non-critical reference
measurements. For accurate measurements, use a professional thermocouple.
-
1. Connect the negative " " plug of the K type thermocouple to the "COM" terminal
+
and the positive " " plug of the K type thermocouple to the "A°C°F°" terminal.
2. Set the range switch to C° or F° position.
3. Connect the end of the thermocouple to the object to be tested.
4. Wait until the reading is stable, read the reading on the display.

Measuring Dwell Angle

( Figure 6 )
1. Connect the black test lead to the "COM" terminal and the red test lead to the
" " terminal. (Note: The polarity of the red lead is positive "
2. Set the range switch to
3. Press the "SELECT" button until the number of cylinders of the engine to be
tested appears. (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 lowvoltage terminal 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 3V peak and 50V peak. If the voltage is
too low, it will be impossible to make dwell measurement.
2. Reading's stability will decrease if the rotation speed of the engine is too low.
3. The polarity of the input voltage must be correct; otherwise it will be
impossible to make measurement.
position, then press the "SELECT" button until the symbol "
( Figure 5 )
position.
+
" )
26
" appears on the display.
" terminal.
figure 5
figure 6