JVC LST0420-001B - Manual (Page 15)

15
Electrical Specifications of Alarm Input
Terminals
(TK-C215V12 only)
● To prevent penetration of noise in the internal
circuitry, apply a non-voltage contact signal to
the ALARM input terminal. Never apply a
voltage.
● Apply an alarm signal for at least 200 ms. If it is
shorter, it is not guaranteed that the signal will
be recognized as an alarm signal.
● Under the alarm status (status when the metal
contact is “make”), select the contact or
connecting wire such that the maximum wire
resistance between the ALARM IN and ALARM
GND is within 150
K.
‹ Polarity of alarm signals
ALARM INPUT
SHORT (CONTACT) ALARM
OPEN NORMAL (HOME POSITION)
ALARM IN
ALARM GND
TK-C215V4_V12_EN.book Page 15 Wednesday, August 2, 2006 1:18 PM