JVC VN-V686U - Manual (Page 23)

23
Alarm input signal
Connects to sensors such as infrared sensors,
door sensors, metal sensors and manual switches.
● To prevent noise from entering the internal
circuit, supply non-voltage contact signal to
the alarm input signal.
● Do not supply voltage.
● When the contact is short (MAKE) or open
(BREAK) on the menu, you can set it to
Alarm.
● Supply such that the alarm signal continues
for at least more than 500 ms. The alarm
signal may not be recognized if it is less than
500 ms.
Alarm output signal
Connect to alarm devices such as alarm, indicator,
light or buzzer.
● Alarm output signal is an open collector output
insulated with photo coupler.
● During an alarm, it is ON.
● As this terminal is polarized, be sure to
connect it such that the voltage of the + output
is higher than that of the - output.
● It will be damaged if reverse voltage is
supplied.
IN
COM
OUTPUT
COM
22
Rating:
Max. applied voltage : DC 20 V
Max. driving current
: 25 mA
VN-V686WPU_EN.book Page 23 Wednesday, January 16, 2008 10:39 AM