JVC LWT0254-001B-H Security Camera User Manual


 
EN 17
Connections & Installation (continued)
Connection of Alarm Input / Output Terminals
Connect the alarm input/output terminals to external
devices such as sensors and buzzers.
A Follow the diagram below to loosen and remove the screws
on the two edges of the terminal block.
B Strip the coating of the alarm signal cable by about 4 mm
before inserting it into the terminal.
C Turn the screw on the side to fasten the alarm signal cable.
D Upon fastening the alarm signal cable, re-install the
terminal block that has been dismantled in
A.
8 Alarm Input Terminal
Connect this terminal to an infrared, door or metallic
sensor, or to a manual switch.
Input non-voltage contact signal to the alarm input
terminal to prevent internal circuit noises.
Do not supply voltage.
Use the menu to set whether to activate alarm when the
contact is short (make) or open (break).
Ensure that the alarm signal input lasts for at least 200
ms. Otherwise, they may not be recognized as alarm
signals.
8 Alarm Output Terminal
Connect this to alarm devices such as an annunciator,
indicator, lamp or buzzer.
The alarm output terminal is a photocoupler-insulated
open collector, which turns ON during an alarm.
As these terminals are provided with polarity. Ensure that
voltage at the + terminal is higher than that at the -
terminal. Application of reverse voltage in this case may
cause the device to break down.
Connection of Coaxial Cables
Connecting an RG-59 coaxial cable.
Strip the tip of the coaxial cable according to the diagram
below.
MEMO
If an RG-11 coaxial cable is used it cannot be connected directly to
the terminal board. To use such a cable, connect an RG-59 cable to
the camera and then connect the RG-11 cable to the RG-59 cable.
To increase cable extension, make use of thicker cables or a cable
compensator.
The maximum extension distance varies according to the system in
use as well as characteristics of the cable.
Rating
Maximum applied voltage : 20 V DC
Maximum drive current : 25 mA
4
m
m
A
C
B
Alarm Signal
Cable
A
D
IN
GND
OUT +
OUT
22
7
mm
17
mm
Mesh Wires
Insulation
Ta pe
Polyethylene
Core Wire
*
*Fold back the mesh wires and secure using an insulation tape to
prevent them from becoming loose and causing a short circuit.