ENGLISH
36
Notes
A good diode that is measured in a circuit should produce a forward voltage drop reading of 0.5 to
0.8 volts. However, the reverse voltage drop reading can vary depending on the resistance of other
pathways between the test lead tips.
Connect the test leads to the correct terminals, as instructed above, to avoid error display. The
display shows "
1
" to indicate open circuit/wrong connection.
The unit for diodes is Volt and indicates the forward voltage drop.
When the diode test has been completed, disconnect the connections between the test leads and
the object being measured.
Continuity test
To perform a continuity test, connect the instrument as follows:
1.
Connect the red test lead to the terminal
and the black test lead to the
COM
terminal.
2.
Set the mode selector to
.
3.
Connect the test leads across the object being measured.
The buzzer sounds if the resistance in the circuit being tested is less than 70 ohm.
The display shows the resistance measured during the test.
Notes
If
"
1
" is displayed, this indicates that the circuit being tested is open.
When the continuity test has been completed, disconnect the connections between the test leads
and the object being measured.
Standby
To save battery life, the instrument turns off automatically if you do not adjust the mode selector or press
a button within about 10 minutes.
Backlight
The instrument has a built-in sensor that automatically turns the display backlight on and off, depending
on the ambient brightness. The backlight comes on if the ambient lighting is poor. If the ambient lighting in
the workplace is good, the backlight turns off.
MAINTENANCE
This section provides basic information about how to care for the instrument and replace the battery and
fuses.
WARNING!
Do not attempt to repair or service this instrument unless you are qualified to do so and have
the relevant calibration, performance test and service documentation. To protect against electric shock
and damage to the instrument, always be careful to ensure that no water or other liquid enters the
instrument.
General care
Clean the casing occasionally with a damp cloth and mild detergent. Do not use solvents or
abrasive products for cleaning.
Clean the terminals with a cotton swab slightly dampened with a mild detergent. Dirt and moisture
in the terminals can affect the readings.
Turn the instrument off after use.
Remove the battery if the instrument is not going to be used for some time.
Do not use or store the instrument at high temperatures, high air humidity or around explosive or
inflammable materials or strong magnetic fields.