Measuring Capacitance; Transistor Measurement; Measuring Inductance - Mastech MS8269 User Manual

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To conduct ON/OFF tests:
1. Set the rotary switch at
2. Connect the black measuring tip and the red measuring tip to the
COM input socket and the Ω input socket, respectively .
3. Measuring the resistance of the circuit to be tested with the other
ends of the measuring tips.
4. When conducting ON/OFF tests, if the resistance of the circuit to
be test is not greater than about 600Ω, the buzzer will hum.

3.2.5 Measuring capacitance

WARNING
In order to prevent the meter or the equipment to be measured
from being damaged, always turn off all power supplies for
the circuit to be measured and discharge all high-voltage
capacitors before measuring capacitance. Make sure that the
capacitors have been discharged with the switch at the
position of DC voltage.
The ranges for capacitance of this meter are 20.00nF, 200.0nF, 2.000μF,
and 200.0μF.
To measure capacitance
1. Set the rotary switch at a proper position, and press down the "Cx/Lx"
key.
2. Connect the black measuring tip and the red measuring tip to the COM
input socket and the CX input socket. (You can also use the dedicated
multi-functional test sockets to measure capacitance).
3. Measure the capacitance of the capacitor to be tested with
the other ends of the test tips, and read the measured value from LCD.
The following are some tips for measuring capacitance:
When conducting measurements on capacitors with high
capacitance with this meter, it takes some time to obtain a stable
value.
In order to improve the precision for the measured value low than
20nF, please deduct the distributive capacitance of the meter and
wires.
position.
11

3.2.6 Transistor measurement

WARNING
Do not apply a voltage higher than DC 250V or AC (effective
voltage) across the common terminal and the hFE terminal
in order to avoid electric shock and/or damaging the meter.
1. Set the rotary switch at the position of hFE.
2. Connect the multi-functional test socket to the meter with
correct connections (the "+" terminal plug of the dedicated
multi-functional test apparatus should be connected to the hFE
terminal of the meter, and the "COM" plug to the common end).
3. Determine whether the transistor is of NPN type or PNP type,
then pulg the three ends (e,b,c) of the transistor into the
corresponded holes on the dedicated multi-functional test
sockets.
4. Read the value from LCD, which approximately equals to the
hFE value of the transistor to be tested .

3.2.7 Measuring inductance

WARNING
Do not conduct measurements for frequency related with
voltages higher than DC 250V or AC (effective voltage) in
order to avoid electric shock and/or damaging the meter .
The ranges for inductance of this meter are: 20.00mH, 200.0mH,
2.000H, AND 20.00H.
To measure inductance:
1. Set the rotary switch at a proper position, and press down "Cx
/Lx" key.
2. Connect the black measuring tip and the red measuring tip to
the COM input socket and the LX input socket, respectively.
3. Measure the capacitance of the capacitor to be tested with the
other ends of the measuring tips, and read the measured values
from LCD.
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