Overload protection: 250V DC or AC peak value
Warning: DO NOT input any voltage at this range for safety!
2.2.11 TRANSISTOR hFE data TEST
Range
Displaying value
Test condition
hFE
NPN or PNP
0~1000
The base electrode
current is approx
10uA, and Vce is
approx 3V
3 OPERATION
3.1 Front panel description
3.1.1 LCD: display the measured
value.
3.1.2 Power
key:
turn on/off the power.
3.1.3 HOLD: Pressing this key for hold
maximum measuring result. LCD
show "PH” icon. Press again this
key turn off data hold and “PH”
icon disappear.
3.1.4 B/L key: turn on/off hold
backlight.
3.1.5 DC/AC: select DC/ AC mode
3.1.6 Range knob: selecting
measuring function and range.
3.1.7 GND. ground, “+” input jack of
capacitance (Cx), inductance
(Lx), transistor and temperature.
3.1.8 “+” pole jack for current lower than 200mA; “-“cathode input for
capacitance (Cx), inductance(Lx), transistor and temperature.
3.1.9 20A current test jack.
3.1.10 “+” pole jack of voltage, resistance and frequency.
3.2 VOLTAGE MEASUREMENT
3.2.1 Insert the black test lead to “COM” jack, the red one to V/
Ω
/Hz
jack.
3.2.2 Set the range knob to “V” range, If the measured voltage is
unsure beforehand, set the range knob to the highest range,
then reduce it gradually until get the highest resolutions
readings.
3.2.3 Press DC/AC key to select DC or AC measuring mode.
3.2.4 Apply the test leads to the test point the LCD displays the
measured voltage value.
NOTE:
a.
If LCD displays “OL”, it means over range, set the range knob to
a higher range.
b.
Do not input a voltage over 1000V DCA or 750V ACV, the test
5
