Maxwell Digital Multimeters 25 222 - Page 6

EN
User Manual
freqUenCy test
Hz
Measuring range Resolution Accuracy
10 Hz 0,01 Hz
±(0.5% + 4)
100 Hz 0,1 Hz
1 kHz 0,001 kHz
10 kHz 0.01 kHz
100 kHz 0.1 kHz
1 MHz 0.001 MHz
10 MHz 0.01 MHz
• Over voltage protection: 250V DC or
250V AC RMS
CapaCity MeasUreMent
Measuring range Resolution Accuracy
60 nF 0,01 nF ±(4% + 25)
600 nF 0,1 nF
±(4% + 15)
6 µF 0,001 µF
60 µF 0,01 µF
600 µF 0,1 µF
6 mF 0,001 mF
±(5% + 25)60 mF 0,01 mF
100 mF 0,1 mF
• Over voltage protection: 250V DC or
250V AC RMS
UsinG tHe MUltiMeter
/ HOLD button
• Data hold function. By pressing briey, the currently
measured value is held on the display. With the second
press, we can return to the measurement mode..
• Backlight on / o. By pressing the button, the backlight
can be switched on and
• It remains on for ~15 seconds, while the measurement
result can be read properly. In order to protect the
battery that ensures the long-term operation of the
device, the backlight turns o automatically.
• ATTENTION: For battery with low energy level, this
function does not work for energy saving reasons.
SEL / button
• Worklight on/o. The work light can be switched on
and o by pressing the button.
• SEL: measurement mode selector
DC V and AC V measurement
1. Set the function switch to the
V
(direct voltage) or
HZ/
V
~
(váltófeszültség) mode.
2. Connect the black test lead to the COM port, and the
red test lead to the
port.
3. Connect the other end of the test leads to the circuit to
be measured.
4. Read the measured value from the display. The polarity
of the red test lead is shown on the display (only the
negative sign).
• ATTENTION: If you are not sure of the approximate
value of the measured value, set the instrument to the
maximum measurement limit. To avoid electric shock
and damage to the device, never exceed 600 V DC or
600 V AC RMS voltage limit!
DC A and AC A measurement
1. Set the function selector switch to
A
~
mode.
2. Select the type of current to be measured (alternating
current or direct current) by pressing the SEL button.
3. Turn o the power supply to the circuit to be measured.
Burn out any high capacity capacitors.
4. Connect the black test lead to the COM port, and the
red test lead to the port for max. 200 mA value,
or connect to the A for max. 10 A value.
5. Connect the multimeter in series with the circuit.
6. Read the measured value from the display. In the case
of DC measurement, the polarity of the red cable is also
shown on the display (only the negative is marked).
• If the display shows OL and the device beeps
continuously, switch to a higher measurement limit.
• ATTENTION: If you are not sure of the approximate
value of the measured value, then set the instrument
to the maximum measurement limit. To avoid device
failure, check the condition of the fuse before the
measurement! Always use the specied sizes and
values! When measuring current, do not connect the
instrument leads in parallel to the circuit, as this may
cause the circuit and the instrument to fail.
Resistance measurement
1. Set the function switch to the Ω position.
2. Select the resistance function Ω by pressing the
SEL key.
3. Connect the black test lead to the COM port, and the
red test lead to the
port.
4. Connect the test leads to the two ends of the resistor.
5. Read the measured value.
• Note: 20 MΩ within the measuring range, the device
needs a few seconds for a stable measurement.
• If the measured circuit exceeds the maximum
measurement limit, the display shows OL.
• ATTENTION: If you are not sure of the approximate value
of the measured value, set the instrument to the maximum
measurement limit. In order to avoid damage to the device or
electric shock, cut o the external power source of the circuit
to be measured, or turn o the high-power capacitors!
Diode measurement
1. Set the function switch to the
position.
2. Briey press the SEL button until
will be shown on
the display