12
485 A/B
485 communication port. They are used to control devices
such as PTZ.
Please parallel connect 120
Ω
between
RS485 A/B cables if there are too many PTZ decoders.
For VR16LT DVR System
(Alarm) Rear Panel for VR16LT DVR System
Parameter
Grounding Alarm
Ground line
Alarm Input
1, 2, …, 16.. It becomes valid in low voltage.
1-NO C
，
2-NO C
，
3-NO C
Three NO activation outputs.
485 A/B
485 communication port. They are used to control devices such as PTZ.
Please parallel
connect 120
Ω
between RS485 A/B cables if there are too many PTZ decoders.
For VREM Series
In the second line, from the left to the right,: 1
，
2
，
3
，
4
，
5
，
6
，
7
，
8
，
In the first line, from the left to the right: 9
，
10
，
11
，
12
，
13
，
14
，
15
，
16
ALARM 1 to ALARM 16. The alarm becomes active in low voltage.
In the second line, from the left to the right:
NO1 C1
，
NO2 C2
，
In the first line, the NO3 C3
The three groups of normal open activation outputs(on/off button)
Ground cable.
RS485 A/B
RS485 communication port. They are used to control devices such
as PTZ.
Please parallel connect 120
Ω
between RS485 A/B
cables if there are too many PTZ decoders.
For VR16PRO and VR32PRO Embedded DVR Systems
RS485 Connection port for PTZ camera
RS485 Connection port for PTZ camera
RS485 Connection port for PTZ camera
Data polarity: + = A
--
= B
