Electrical specifications of alarm input terminals, Electrical specifications of, Alarm input terminals – JVC TK-C215VP4U/E User Manual
Page 18: A pg. 18), A pg. 18, Aelectrical specifications of alarm, Input terminals, About connection cables (continued)
18
Electrical Specifications of Alarm Input
Terminals
(TK-C215VP12U/E 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
About Connection Cables
(continued)
ALARM INPUT
SHORT (CONTACT)
ALARM
OPEN
NORMAL (HOME POSITION)
ALARM IN
ALARM GND
TK-C215VP4_JP.book Page 18 Thursday, November 2, 2006 10:51 AM