from the circuit as to avoid damage to this tester..
(This tester can afford the voltage <250V DC/AC rms. for the period of 3 seconds
max.)
Transistor hFE and LED Test
1. Set the selector switch to the R X 10 range.
FOR Measuring Transistor hFE
2. Take note the type of transistor “PNP” or “NPN” and then insert the transistor
terminals of the Emitter, Base and Collector separately into the proper holes of
the socket on the front panel.
3. Read the approximate hFE Value directly at the hFE scale.
NOTE: Current 10μA. VCE 2.8V.
4. When the Base terminal cut, the value of Leak is Iceo for Transistor.
FOR Measuring LED: Insert the transistor terminals directly into the E(Up) “+”
and C(Down) “-” holes of the socket on the front panel.
And then check if the LED under testing is lighting.
Diode Measurement
1. Set the selector switch to the appropriate Ω range to be used.
NOTE: To test the diode while current below 0.060 mA at X 10K range; current
below 0.15 mA at X 1K range; current below 1.5 mA at X 100 range; current
below 15 mA at X 10 range; current below 150 mA at X 1 range.
2. For IF (forward current) test, put the BLACK test lead to the “-COM” jack and
the RED test lead to the Red “+” jack. And then connect the Black probe to the
Positive terminal of the Diode, the Red probe to the Negative terminal of the
Diode.
For IR (reverse current) test, reverse the connection.
3. Read the linear (forward voltage) VF of the diode on the LV scale.
Battery Check
1. This meter comes with two separate battery check ranges to test either DC
1.2V /2.0V /3.0V or 3.6V batteries.
2. Set the selector switch to the appropriate BATT range to be used.
3. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the
Red “+” jack.
4. Connect the Red test lead to the positive end of battery and the Black one to
the negative end of the battery to be measured.
5. Take reading on the “BATT” scale and check it good or bad as per which
portion indicated.
(Note: the mark section of “?” shows that the battery may be starting to decay.)
NOTE: If connected incorrectly with the voltage, quickly remove the test leads
from the circuit and can avoid the damage to this tester.
(This tester can afford the voltage <250V DC/AC rms. for the period of 3 seconds
max.)
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