![CBC ZC-PT212 Скачать руководство пользователя страница 19](http://html.mh-extra.com/html/cbc/zc-pt212/zc-pt212_installation-manual_2575447019.webp)
Installation
Guide
18
The 22-pin connector definition is listed as below.
Pin
Definition
Cable
1
AC 24-1/DC (
+
)
20AWG
2
ALM
NC
3
AC 24-2/DC (
-
)
20AWG
4
ALM
NO
5
FG
20AWG
6
ALM
COM
7
T+
8
R-
9
T-
10
R+
24AWG
11
ISOG
12
ALM-1
13
ALM-3
14
ALM-2
15
ALM-4
16
ALM-5
17
ALM-6
18
ALM-7
19
ALM-8
20
ALM
GND
21
VGND
22
Video
24AWG
3.4.4 RS-485
Connector
RS-485 is the interface that communicates the dome camera and its control
device. Please connect the control keyboard to the speed dome through the
terminal block. The recommended cables for RS-485 communication are
CAT
5
cables; maximum cable length for over 24-gauge wire is 4000 feet (1219
meters). If the total cable length exceeds 4000 feet, using a repeater to
maintain the signals is recommended. Please refer to the figure and table
below for pin defination and wiring.