Maxwell Digital Multimeters 25302 Bedienungsanleitung Seite 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.
•
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,
•
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.
maximum inward current may be 200ma or 20a based
•
on the selected connector. (the test time may be 10
seconds max.) Currents too high may melt the fuse
which then needs to be replaced. the 20a range is not
protected!
a maximális bemenő áram 200 ma vagy 20a a választott
•
bemenettől függően. (a teszt ideje max. 10 másodperc.)
a túl nagy áramerősség a biztosítékot kiolvasztja, amit
ki kell cserélni. a 20 a-es méréshatár nincs biztosítva.
resistance measuring
Connect the black wire to the „COM" and the
•
red one to the „V/ Ω" connector.
Set the function switch to the desired
•
resistance range.
Touch the wires to the measured circuit
•
paralelly.
Note: make sure that the measured circuit is
not under power!
The maximum overload capability for the
•
connector is 250V RMS (for maximum 10
seconds).
Note:
if the measured resistance value is over the maximum
•
threshold and the device signals overload („1"), select a
higher range. When measuring above 1mΩ it may take