Aktakom AM-1171, User Manual

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Overload protection: 250V DC or AC peak value.
XIV. Capacity (C)
1. Press " " button and respectively plug in the red and black meter pens into “ ”and“COM”.
2. Circularly press " " button and select the automatic measurement range of capacity. Meanwhile, the corresponding
symbol will appear on the LCD screen. No manual measurement range and analog bar will be displayed in Capacity mode.
Caution
:
a) When measuring the capacity, all the powers within the tested circuits must be disconnected and the capacitance shall be
sufficiently discharged
b)When measuring big capacitors, it takes a longer time, about 100uF per 15 seconds.
c) When the measurement is completed, immediately disconnect the meter and the measured circuit.
Range Accuracy Resolution
40nF ±(5.0%+30d) 10pF
400nF 100pF
4μF 1nF
40μF
±(3.5%+8d)
10nF
200μF ±(5.0%+10d) 100nF
Overload protection: 250V DC or AC peak value.
XV. Frequency (Hz)
1. Press " " button to conduct frequency measurement.
Respectively plug in the meter pen into “V Ω Hz”and“COM”.
2. Have the testing end of the meter pen connected in parallel with the signal sources to be measured and read the results
from the display. (Note: No analog bar will displayed in this mode)
3. When testing frequency, press "Hz/DUTY" once to conduct duty cycle measurement. Press "Hz/DUTY" once more to
enter the frequency status.
4. Read the current results from the display.
Caution
:
a) Do not input signals higher than 60V, otherwise it may
damage the instrument and pose dangers to human safety.
b) After all the measurements are completed, it is necessary
to disconnect the meter pen and the tested circuit.
Range Display value
Measurement
condition
Diode forward
voltage drop
Forward DC current
is about 1.0mA, and
backward voltage is
about 3.0V.
If Buzzer emits a
long sound and the
resistance of the
two points is
measured as 30
Ω
Open circuit voltage
is about 1.2V
F
C
Hz
diode
switch
AC
D
C
/
D
C
/AC
F
C
H
z
switch
buzzer
AC
D
C
/
D
C
/A
C
switch
F
C
H
z
capacitance
AC
D
C
/
D
C
/A
C