User’s
Manual
10
Call Monitor (for 8ch and 16ch Models only)
The call monitor is used to display full screen video of all installed cameras in
sequence. The BNC call monitor connector allows user to connect the
DVR-4TL
series unit with an optional call monitor.
Main Monitor (BNC/ VGA)
BNC and VGA output connectors are offered for connecting to a main monitor.
The main monitor displays live image and playback recorded video in either
full-screen or split-window format. VGA output connector is optional.
Visdeo System Switch
It is used for adjusting the video system of the unit.
Video Input
A group of BNC connectors are available for video input streams from
installed cameras.
Alarm I/O & RS485
The unit provides an alarm I/O and RS485 port that offers user the flexibility
required to connect the unit to the other device. The pin definition for each
model is listed as below tables:
Pin Definition for 4ch-Model:
Pin
Definition
Pin
Definition
1
ALARM OUT O
9
Alarm Out C
2
ALARM OUT COM
10
GND
3
RS485 D/R+
11
-
4
RS485 D/R-
12
-
5
ALARM In 1
13
-
6
ALARM In 2
14
-
7
ALARM In 3
15
-
8
ALARM In 4
