3B SCIENTIFIC PHYSICS 1018832 Инструктивный лист - Страница 5
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Resistance measurement
Warning! To avoid electrical shock
or damage to the meter when
measuring resistance in a circuit,
make sure the power to the circuit
is turned off and all capacitors are
discharged.
Set the measurement range dial to the Ω
range.
Connect the black test lead to the measure-
ment socket "COM" and the red test lead to
the " A/Ω/hFE" socket. Measurement is done
parallel to the resistor
Note
lf the resistance to be tested is unknown be-
forehand, set the measurement range dial to
the highest range and work dowWhen only
the figure "1" is displayed, over range is being
indicated and the measurement range dial
has be set to a higher range.
When the input is not connected, i.e. at open cir-
cuit, the figure "1" will be displayed for the over
range condition.
6.1.4
Diode test
Set the measurement range dial to
Connect the black test lead to the measure-
ment socket "COM" and to the cathode of the
diode. Connect the red test lead to the "
A/Ω/hFE" socket and the anode of the diode.
Note: The meter displays the forward voltage
drop and displays figure "1" for overload when the
diode is reversed.
6.1.5
Continuity test
Warning! To avoid electrical shock
or damage to the meter when
measuring continuity in a circuit,
make sure the power to the circuit
is turned off and all capacitors are
discharged.
Set the measurement range dial to
Connect the black test lead to the measure-
ment socket "COM" and the red test lead to
the " A/Ω/hFE" socket.
A built-In buzzer sounds if the resistance is less
than 30 ± 10 Ω.6.1.6
.
.
Transistor hFE test
Set the measurement range dial to hFE.
Insert the adapter for transistor test into the
the measurement sockets "COM" and "
A/Ω/hFE".
Make sure the transistor is "NPN" or "PNP"
type. Insert the transistor correctly into the
corresponding transistor test socket.
Display reading is approx. transistor hFE value
(0 – 1000). Base current approx. 10 µA, V
prox.2.8 V.
7. Maintenance
Turn off the meter and remove the test
leads before you service or clean the
device.
Beyond replacing batteries and fuses, do not at-
tempt to repair or service your meter unless you
are qualified to do so and have the relevant cali-
bration, performance test, and service instruc-
tions.
7.1 Battery and fuse replacement
Replace the battery as soon as the flat
battery icon (
Remove from the multimeter any bat-
teries which are flat or starting to disin-
tegrate.
Also remove batteries from the multi-
meter if it has not been used for a long
period of time.
Turn off the meter and remove the test
leads before opening the case.
Loosen screws with suitable screwdriver and
remove case bottom.
Replace the battery or the fuse.
Replace the case bottom and reinstall the
three screws. Never operate the meter unless
the case bottom is fully closed.
Do not dispose of the
battery
in
regular
household
refuse.
Follow the local regu-
lations (In Germany:
BattG;
2006/66/EG).
5
CE
+ -
) appears.
EU:
ap-