Maxwell Digital Multimeters 25302 User Manual page 4

EN
User Manual
Overload protection
Transistor hFE test
Function Description
The
amplification
factor of the
h transistor is
FE
measured (0-
1000)
(all types)
Contact phase detection function
Set the function switch to TEST position.
•
Connect the red measuring wire to the V
•
connector.
Touch the wire to the measured point, BUT
•
MAKE SURE YOUR FINGERS ARE BEHIND THE
FINGER PROTECTION PART AT ALL TIMES!
If phase is present, the device gives a continuous beeping
sound, the red light beneath the HOLD button lights up
and the display shows '1' . If there is no phase, the device
displays '000' .
IMPORTANT!
Make sure that when measuring the above the
•
function switch is ALWAYS in TEST state!
Usage
Check the 9V battery and press the POWER
•
button. If the battery is depleted, the
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.
A funkcióválasztó kapcsolót a mérés előtt
•
állítsa a megfelelő állásba (funkcióhoz)
Ha a mérendő mennyiség nagyságrendjét
•
nem ismeri, állítsa a kapcsolót a legmagasabb
méréshatárra és onnan haladjon visszafelé,
amíg a megfelelő értéket eléri.
DC and AC voltage measuring
Connect the black measuring wire to the
•
„COM" and the red one to the „V/ Ω /Hz"
connector.
Set the function switch to the correct V
•
250 V DC / AC RMS
(for maximum 15
seconds)
Test state
Base current
appr. 10 μA
V appr. 3 V
CE
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.
If only a „1" is displayed on the screen, it signals
•
overload. Switch to a higher range.
Do not connect voltage exceeding DC 1000V or AC 750V
•
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.
•
1. Model no.
2. LCD display
3. Backlight/Auto Power Off
4. Function switch
5. „+" connector : 20A
6. „+" connector : mA+ capacity +
temperature
7. „-" connector: ground (GND) + capacity+
temperature
8. „+" connector: voltage, resistance, diode,
continuity test
9. Transistor connector
DC and AC current measuring
Connect the black wire to the „COM" and the
•
red one to the „mA" connector (max. 200mA)
or the „20A" connector for measuring 200mA
or 20A.
Set the function switch to the proper range.
•
Connect the wires to the circuit serially.
•
For measuring current between 200mA and
•
20A follow the instructions above, but connect
the red wire to the „20A" connector.
Note:
If you are unsure about the magnitude of the result,
•