Standard Connection Cable; One Control Keyboard Per Line - Videotec DCK Manuel D'instructions

Setup
Mixed setup

3.3 Standard connection cable

The connection between the DCK keyboard and the various controlled devices is made only and exclusively
using a RS485 serial channel.
When the controlled device does not provide this channel it will be necessary to insert a signal converter (e.g.
RS486-RS232 or RS485- Current loop) between the keyboard and the device itself.
Connection with the latest generation of Videotec products (video switchers SM42A, SM82A, video matrix
SW328, SM84A, SM164A, etc.) can be made directly using a serial 1.5m telephone cable, which is supplied.
A pair of telephone cables with a pair of RJjack shunt boxes can be used to arrive at distances of up to 1200m
using the following connection diagram:
3.4 One contr ol keyboard per line
Connection is performed by means of one standard connection cable, which is described in the previous
paragraph.
Description
The received signal is sent "clean" to
the next device. If one device is
blocked, communication is cut off to the
devices later in the chain.
The maximum total length is equal to
the number of lines multiplied by
1200m for each distance.
It is possible to
configurations, always bearing in mind
the limits given above:
• each line can have a maximum
length of 1200m
• each line should be terminated at the
ends
• the stubs should be very short (max.
2m)
DCK RJjack 1
RS485A White
RS485B Yellow
Example
set up mixed
RJjack 2
Blue
Black
Page 8
Device
RS485A
RS485B
MNVCDCK_0441