649-216
ETT Distribution GmbH Schmalbachstraße 16 38112 Braunschweig
Nachdruck oder Vervielfältigung nur mit ausdrücklicher Genehmigung
Continuity Testing:
1.
Connect the red testing lead with
V
Ω
mA
and the black one with
COM
.
2.
Turn the rotary switch to .
3.
The circuit to be tested must be dead-voltage.
4.
Connect both test leads to two position of the circuit to be tested.
5.
If the test current can pass the wire which means its electric resistance is less than 50
Ω
then you can
hear an acoustic signal provided by the integrated buzzer.
Transistor Testing:
1.
Insert the measuring adapter into the connectors
V
Ω
mA
and
COM
.
2.
Turn the rotary switch to
hFE
.
3.
Attach the transistor to be tested to the suitable socket while paying attention to the correct polarity.
The socket left-hand is for NPN-types and the socket right-hand is for PNP-types. SMD-types can also be
tested.
4.
The display shows the aplification factor „hFE“ of the transistor.
Operation:
Before you perform any measurement insert the batteries. Release the screw of the battery
compartment on the backside. Switch the device off every time you exchange the batteries.
Plug the sensors in but pay attention which terminals you have to use. This depends on the type of
measurement you want to do. (For details see „The procedures of Measurement“)
Switch the device on by turning the rotary switch from
OFF
to the desired measuring range.
Precede the measurement as described under „The procedures of Measurement”.
After finishing the measurements switch the device off by turning the rotary switch back to
OFF
.
