SerVision HVG400 Manual do Utilizador descarregar pdf (Página 4)

SerVision Ltd.

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Connection Types

By default, each of the COM ports supports a different type of connection: COM1

is configured for RS 232 connections and COM2 is configured for RS 485.

Cameras must be connected to COM ports that are configured for the connection

type they use.

Multiple Cameras

In the default configuration, only one RS 232 camera can be connected to an SVG

unit, because each RS 232 camera must be plugged directly into a COM port. On

the other hand, multiple RS 485 cameras can be connected to an SVG unit,

because they can be linked to one another sequentially.

Converting COM2 to RS 232

SVG units with two COM ports that support RS 232 can be provided upon special

request. This configuration makes it possible to connect two RS 232 cameras to

the unit.

Note: You can also reconfigure COM2 to support RS 232. For information

about how to do this, please contact technical support.

Converting COM1 to RS 485

COM1 can be converted to RS 485 by means of an external converter (available

from SerVision). This can be useful if you want to connect RS 485 cameras that

use different control protocols to the SVG unit.

Connecting Cameras

A flat ribbon cable with a D-type 9-pin female connector is used to connect a

camera to its appropriate COM port.

Figure 1 - Flat ribbon cable with D-type 9-pin female connector

D-type 9-pin

female

connector

Flat ribbon

cable

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