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Connecting to External Devices
External devices are connected through the I/O terminal. The pinout
for the I/O terminal is shown in the following table and diagram.
Consult the software user guide for details on how to configure the
external devices.
Figure:
External I/O terminal schematics and example applications.
Table:External I/O Terminals
Pin
Function
Description
1
GND
Ground for RS-485 interface.
2
RS-485 RX/TX+
Half-duplex RS-485 interface for controlling
external equipment.
3
RS-485 RX/TX-
4
I/O Common
Shared pin for Input and Output.
5
Input 4(+)
The input uses a photocoupler and is electrically
isolated from the internal circuitry. The input
voltage should not exceed 12 V.
6
Input 3(+)
7
Input 2(+)
8
Input 1(+)
9
Output 4
The output uses a photocoupler and is electrically
isolated from the internal circuitry. The output
terminal connections can be made with either
polarity. The output can drive a maximum load of
50 V and 120 mA.
10
Output 3
11
Output 2
12
Output 1
RS-485
1
2
3
4
5-8
9-12
24V
3V
+
+
-
-
External Device
Encoder
Relay
Switch
Summary of Contents for ENC-4PORT-2AI
Page 1: ...Installation Guide Avigilon Analog Video Encoder Model ENC 4PORT 2AI 920 0013A Rev2...
Page 20: ...Guide d installation Mod le d encodeur analogique vid o Avigilon ENC 4PORT 2AI 920 0013A Rev2...
Page 77: ...Installationsanleitung Avigilon Analoge Video Encodermodell ENC 4PORT 2AI 920 0013A Rev2...
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Page 116: ...9 23 11 Avigilon Corporation...
