Monacor DMT-4010RMS, Инструкция по эксплуатации

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To return to “DC”, press the button “MODE”
again.
4) Insert the meter via the test leads into the
circuit to be measured and read the value on
the display. If the red test tip is applied to the
negative pole and the black tip to the posi-
tive pole when measuring DC currents,
there will be a minus sign in front of the
value displayed.
If the current measured exceeds the ad-
missible value of a measuring range, warn-
ing signals will sound and “OL” (overload)
will be displayed. In this case, select the
next higher range.
6.3 Measuring resistances
Never measure a resistor when voltage is
applied; always measure it separately,
otherwise the measurement will be inaccu-
rate. For this purpose, it may be necessary
to solder it out of the circuit.
1) Set the selector switch (10) to the position
“ Ω ” to activate the mode “resistance
measurement”.
2) Apply the test tips to the resistor and read
the value on the display. As long as the re-
sistance value between the test tips is
> 40 MΩ, “OL” will be displayed to indicate
that the measuring range has been ex-
ceeded.
6.4 Testing the continuity
Never test the continuity when voltage is ap-
plied, otherwise the measurement will be in-
accurate.
The continuity buzzer will help to detect inter-
ruptions in the circuit.
1) Set the selector switch (10) to the position
“ Ω ” to activate the mode “resistance
measurement”.
2) To switch to continuity test, press the button
“MODE” (3) once (buzzer symbol will be
displayed).
3) Apply the test tips to the measuring points. If
the resistance value between the points is
smaller than 35 Ω, the internal buzzer will
sound. The resistance value will be dis-
played up to 400 Ω. With higher values, the
overload indication “OL” will appear.
6.5 Testing diodes
Never test a diode when voltage is applied;
always test it separately, otherwise the
measurement will be inaccurate. For this
purpose, it may be necessary to solder the
diode out of the circuit.
1) Set the selector switch (10) to the position
“ Ω ” to activate the mode “resistance
measurement”.
2) To switch to diode test, press the button
“MODE” (3) twice (diode symbol will be
displayed).
3) Apply the black test tip to the cathode of the
diode and the red test tip to the anode. With
a measurement current of approx. 1 mA, a
forward voltage up to 1.999 V will be dis-
played. If a value around 0 V is displayed,
the diode has a short circuit. If “OL” is dis-
played, the diode is interrupted, reverse-
biased (reverse the polarity of the diode) or
has a higher forward voltage (e. g. some
LEDs).
6.6 Measuring capacitances
1) Set the selector switch (10) to the position
“CAP”.
2) Apply the test tips to the capacitor. With
electrolytic capacitors, observe the polarity:
Apply the red test tip to the positive pole,
apply the black test tip to the negative pole.
Read the value on the display. With very
high capacitances, the measuring process
will require some time. It may take a few
minutes before the reading on the display
has stabilized. When measuring capaci-
tances, the bar graph will have no function.
Note: If the display shows “diS.C”, the capaci-
tor is charged and must be discharged before
measuring. Due to the long discharge time, it is
not recommended to discharge the capacitor
via the multimeter.
WARNING Never measure a capacitor
when it is charged or when oper-
ating voltage is applied; other-
wise you will risk an electric
shock.
Switch off the power supply and discharge
the capacitor before soldering it out of the cir-
cuit.
15
GB