Resistance; Continuity - MAC TOOLS EM720C Manual De Instrucciones

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4.7 Resistance

1. Turn off all power and discharge capacitors on the circuit under
test.
2. Insert the red test lead in the "INPUT" jack and the black lead in
the "COM" jack.
3. Move the rotary switch to the " Ω" position. Connect the test leads
across the circuit to be measured.
4. Read measured resistance on the LCD display. Tips for measuring
resistance:
- Sometimes the resistor value and measured resistance differ. This
is due to the meter's output test current goes through all possible
paths between leads.
- For low resistance measurements, short the test leads and record
the resistance displayed. Then connect to the circuit and subtract
the recorded resistance from the measurement for the most
accurate results.
- When leads are disconnected or measurement is out of range,
"OL" is displayed.
To avoid injury or damage to the meter, make sure to turn off all
power and discharge all capacitors before measuring resistance.

4.8 Continuity

1. Turn off all power and discharge capacitors on the circuit under test.
2. Insert the red test lead in the "INPUT" jack and the black lead in
the "COM" jack.
3. Move the rotary switch to the "
leads across the circuit to be measured. Read measured resistance
on the display. If the measured resistance is less than 40Ω, the
meter's buzzer will sound.
To avoid injury or damage to the meter, make sure to turn off all
power and discharge all capacitors before measuring continuity.
800.MACTOOLS
WARNING
AUTO
%
H z
V
A
Ω, kΩ, MΩ
Ω" position. Connect the test
WARNING
11

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