Maxwell Digital Multimeters 25304, Руководство пользователя

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Frequency
Range Accuracy Resolution
10 Hz
+/-(0,1%+3)
0,01 Hz
100 Hz 0,1 Hz
1 kHz 1 Hz
10 kHz 10 Hz
100 kHz 100 Hz
1 MHz/10 MHz 1 kHz/10 kHz
Overload
protection 250 V DC or AC peak value
(for maximum 10 seconds)
Input sensitivity 1 V RMS
Inductance
Range Accuracy Resolution
2 mH
+/-(2,5%+30)
1 μH
20 mH 10 μH
200 mH 100 μH
2 H 1 mH
20 H 10 mH
Overload protection DC 36 V
Warning: Do not connect external voltage
source to the connectors!
REL MAX MIN
hFE
mH
%
APO
DC
AC
T-RMS
F C
˚ ˚
FVA nm
µ
Mk Hz
Ω
1
6
7
2-3
2-4
3
5
4
2-2
2-1
1. LCD: display the measuring value and unit
2. Function keys
2-1. Power switch: turn on/off the power
2-2.
Data hold and backlight / work light
button: Press briefly to keep the currently
measured value on the display, while
"HOLD" is displayed.
2-3. Transistor test socket.
2-4. Press " REL/MAX/MIN ", then you can test
the relative magnitude. If you hold the
"
REL/MAX/MIN " for more than 2s, you can
test the Max and Min value.
3.
Range knob: to select measuring function
and range.
4. Voltage, resistance, frequency, capacitance,
diode port - „
V / Ω ”
5. Common measuring port ( COM )
6. Port for measuring current less than
200 mA and inductivity
7. Port for measuring current 20 A
Usage
•
Check the 9 V battery and press the " POWER "
button. If the battery is depleted, the battery
symbol appears on the screen.
• The signs near the connectors warn about not
exceeding the inward voltage or current. This is
to prevent damage to the inside circuits.
• Before measuring set the function switch to the
desired position.
• If you are unsure about the magnitude of the
result, set the switch to the highest possible
range and go backwards until you reach the
correct setting.
DC and AC voltage measuring
•
Connect the black measuring wire to the „ COM ”,
and the red one to the „
V / Ω
” connector.
• Set the function switch to the correct " V "
position and connect the wires to the voltage
source paralelly.
Note:
• If you are unsure about the magnitude of the result, set the switch
to the highest possible range and go backwards until you reach
the correct setting.
• Set the DC / AC switch to the desired (DC or AC) function.
• If only an „OL” is displayed on the screen, it signals overload.
Switch to a higher range.
• Do not connect voltage exceeding DC 1000 V / AC 700 V to the
connectors. Results may be displayed at higher voltages also, but
this may lead to damage to the inside circuits.
• Do not touch the high voltage circuits while measuring.