change to manual range mode.
4.When measuring the min. resistance ,please
short-
circuit the test leads at first, press “REL” ,then test
the resistance ,it will display the actual resistance.
Note:
1 Firstly users should select the knob to the highest
range, if users had no idea about the range of
resistance under test, and then select the proper range
based on displaying value .
1. The LCD displays “OL” when the resistance is over
the selected range. The knob should be adjusted to a
higher range. When measuring value is over 1MΩ, the
reading will take a few seconds to be stable.
It’s normal
for high resistance measuring.
2. When input terminal is in open circuit, overload
displays “OL”.
3. When measuring in line resistor, be sure that the
power is off and all capacitors are released completely.
4. Do not input any voltage at resistance range even the
meter has voltage protection functions at this range!
4-7.Capacitance measurement
1.select knob to “
”range
；
2.
insert the black lest lead to “COM” terminal and the
red one to “V/Ω/Hz” terminal.
；
3.if the LCD doesn’t display “0”, press “REL” to clear the
reading;
4.Select the knob to proper capacitance range, and
insert the measuring accessories or test leads into
“COM” and “VΩHz”” terminal.(Note :the red test leads is
for positive pole
○,
＋
).LCD displays capacitance value.
Note:
1.
Don’t input voltage or current to the “VΩHz” terminal
when measuring the capacitance or the capacitance
isn’t away from the “Cx” terminal.
2. In order to assure the accuracy, please press
“REL” to clear the reading before testing.
3. There is only the auto range mode under the
capacitance range.
4. The capacitance must be complete discharge before
testing.
5. The reading of 400uF range delay 15 seconds
4-8.Frequency measurement
1. Insert
the black lest lead to “COM” terminal and the
red one to “V/Ω/Hz” terminal.
；
2.select the knob to“Hz”range
，
insert the test leads or
shielded cable to the signal source or the load which
is tested.
3.Press“Hz/DUTY” key to switch frequency/duty cycle
，
it
will display the frequency or duty cycle of the signal
source which is tested.
Note
：
1. There is only the auto range mode under the
frequency range;
2. The meter can still work if the input is higher than
10Vrms, but the accuracy is not guaranteed;
3. In noise environment, you'd better use shield cable to
measure a low signal;
4. When measuring high voltage circuit, any parts of
your body should not touch the high voltage circuit;
5.
Don’t input voltage higher than 250V DC or AC peak
value, or it may damage the meter.
4-9.Transistor hFE measuring
1.Select the knob to hFE range
；
2.Define the transistor is NPN or PNP type, insert the
emitter, base and collector separately to the correct hole,
the approx. value will be displayed on LCD.
4-10. Diode and Continuity performance test:
1.
Insert the black test lead to “COM” terminal and the
red one to “V/Ω/Hz” terminal (the polarity of red lead is
“+”)
2.Select the knob to
range ,press “DC/AC” key to
select the measurement mode, connect test leads with
the diode under tested,
3.Forwarder measuring :insert the red test leads
connect to diode positive polarity, the black test leads to
diode cathode polarity, the reading is the approx. value
of diode forward volt drop.
4.backward measuring: the red test connect to diode
cathode polarity, the black test leads to diode positive
polarity ,the LCD display “OL”;
5.The complete diode testing include forward and
backward measurement, if the result isn’t meet the
above, it means the diode is bad.
5. press
“DC/AC” key to select the Continuity
measurement mode.
6.Insert test leads to two points of tested circuit, if the
inner buzzer sounds, the resistance is less than
(
50±10)Ω.
Note:
1.
Don’t input voltage at “
” range.
2.Make sure be power off and discharge the capacitor
，
any AC signal will make the buzzer sounds.
4-11.Temperature measurement
1.Select the knob to“
℃
/
℉
”range.
