DC and AC current measuring
•
Connect the black wire to the „
COM
” and the
red one to the „
mA
” connector (max. 200 mA)
or the „
20A
” connector for measuring 200 mA
or 20 A.
•
Set the function switch to the proper range.
•
Connect the the wires to the circuit serially.
•
For measuring current between 200 mA and 20
A 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 an „OL” is displayed on the screen, it signals
overload. Switch to a higher range.
• The maximum inward current is 200 mA or 20 A
depending on the connector. (For maximum 15 seconds.)
Too much currency overheats the fuse which needs to be
replaced. The 20 A measuring range is not protected.
• Maximum overload voltage: 200 mV.
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.
Warning: make sure that the measured circuit is
not under power!
•
The maximum overload capability for the
connector is 250 V RMS (for maximum 10
seconds).
Note:
• If the measured resistance value is over the maximum
threshold and the device signals overload („OL”), select a
higher range. When measuring above 1 MW it may take a
few seconds for the device to stabilize the displayed value.
This is completely normal for such resistors.
• If you do not connect a resistor to the connector (or there is
a break) the display will show „OL”.
• If you are measuring a resistor that is part of a circuit make
sure that the circuit is not under power and all capacitors are
discharged.
• Do not connect inward voltage to the device as it may lead to
damage to the inside circuits.
• The outward voltage on connectors not under power is
approximately 3 V.
Capacity measuring
•
Set the function switch to "
2 mF
" position.
•
Connect the measured capacitor to the „
V /
Ω
” and "
COM
" connector. Pay attention to the
correct polarity.
Note:
• If the measured value exceeds the maximum value of the
selected range and the device signals overload („OL”).
• Unit: 1 nF=10
-3
μF or 1000 pF
• Do not connect external voltage or current to the
connector! Turn off the power and discharge the capacitors
before measuring. Also discharge the electrolyte capacitors
before measuring!
• Before measuring discharge the electrolyte capacitors
more times.
Diode and continuity test
•
Connect the black measuring wire to the
„
COM
”, the red one to „
V / Ω
” connector. (Note:
the polarity of the red wire is: +)
•
Set the function to „
” position.
•
Touch the wires to the diode's connectors.
The screen shows the opening voltage of the
diode.
•
Connect the wires to two points of the circuit. If
the resistance is below 90 Ω the device beeps.
Note:
• If you do not connect a unit to the connectors (or there is a
break) the display will show „OL”.
• During the test 1 mA current goes through the diode.
• The display shows the opening voltage of the diode in mV,
and overload if the diode is connected with the polarity
reversed
Temperature measuring
•
Set the function switch to "
°C/°F
" position.
•
Connect the black wire of the temperature
measuring sensor to the „
COM
” connector and
the red one to the „
V/Ω
” connector. Put the
sensor to the place measured. The display shows
the measured value in °C or °F (press "
HOLD
"
button to select).
Note:
• The device functions with a special temperature
measuring sensor.
• If the sensor is not connected to the connector, the device
displays the temperature of the environment.
• Do not connect outward voltages to the connectors, if the
device is in temperature measuring function.
Transistor hFE test
•
Set the function switch to "
hFE
" position.
•
Determine if the transistor is NPN or PNP and
place it in the proper connector.
•
The amplification factor of the transistor is
displayed on the screen.
•
IB = 10 μA, VCE = 2,8 V
