ES278 Datasheet, PDF (20/25 Pages) Cyrustek corporation – 4000 Counts Manual DMM

ES278
4000 Counts Manual DMM
4. Miscellaneous
The conditions, which the meter turns on the buzzer, include:
(1) Changing measurement mode generates one beep.
(2) Pressing any of the push functions generates one beep, if the function is valid.
(3) Power on and re-power on generate one beep.
(4) Input overflow in voltage and current mode generates one beep every 0.3 seconds (or 3.33
beeps per second.)
(5) Hazard voltage indication is active generates one beep per second and could be disabled by
DISDGBP pin.
(6) Continuity(diode) check generates a continuous 2KHz beep whenever the measurement is less
then 30Ω(30mV)
(7) Auto power off generates a 2KHz beep which lasts for 1.5 seconds.
The following figures show the output waveform from the BUZOUT pin.
0.5 mS
(a) Continuous 2KHz beep
0.15 sec
0.3 sec
(b) 3.33 beep/sec
V 1.5
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2015/12/11