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are connected normally, the buzzer will sound
continuously;
5. Contact the probe to the measured circuit,
measure the resistance;
6. If the resistance or circuit of the measured
resistance is less than 50Ω, the built-in beep will
sound and the value will be displayed on the LCD
screen;
7. If there is no continuity, the beep will not sound and
“OL” will be displayed on the screen, which means the
resistance is damaged.
WARNING
Before measuring in-circuit resistance, be sure
that the circuit under test has all power
removed and all capacitors are fully discharged.
Otherwise, the instrument may be damaged and
may be struck by electric shocks.
Diode measurement
1. Turn the knob to “
” and the icon “
” is
displayed on screen;
2. Insert the red probe in “
” socket, insert the
black probe in “COM” socket;
3. Connect the red test lead to the positive end of the
