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User's Guide of Digital Mini Multimeters DT-16/DT-18
7. Measurement positive input terminal (red probe)
8. Measurement positive input terminal (black probe)
6 Key fUnCTions anD aUTo power off
6.1 seleCT Button
The key is the resistance and capacitance measurement, buzz off
and diode test function switching key, accompanied by beep sound
when the switch prompt. (For DT16, is no capacitor switching).
In sleeping mode, press this key to wake the meter and the
automatically power-off function will be cancelled. (Only for DT-18).
6.2 relaTiVe Button
When press this button, the meter will display the current value
as a reference value, after that, the readings of measurement will
automatically subtracting this reference value. Press this button
again; the meter will exit the relative value measurement into
the normal measurement state; frequency / duty cycle measurement
has no the relative value function.
6.3 DaTa HolD Button
Press this button and the display value is locked and remained.
Press this button again, the locked state is released, and the meter
enters the normal measuring mode. For DT16, in sleeping mode,
press this button to wake the instrument and the automatically
power-off function will be cancelled.
6.4 Hz/Duty measurement
In the ACV/DCV file, press this button and convert into Hz/Duty
measurement (Press Hz/Duty button back and forth to measure the
frequency or duty cycle); After measuring the Hz/DUTY return
the DCV or ACV, the measurement range of the instrument is
