EverFocus KS-KBK Operating Instructions Manual page 75

5.9 Video ma trix Videotec SW164OSM
5.9.1 Description
Matrix Videotec SW164OSM is a product for professional use in applications for security and surveillance and
dedicated to the management of video signals. It can be used to control 16 input videos; there are four video
outputs, one of which can be managed directly by a VCR. It is used to control the usual switching and alarm
management operations. Refer to the matrix manual for further information on this subject.
5.9.2 Connection
5.9.2.1 Cable
The connection between the matrix and the keyboard is made using an RS232 channel, which limits its length to
about 15 metres. It is necessary to create a connection cable, which is inserted between DB9 on the back of the
keyboard and one of the RJ11 connectors on the back of the matrix.
Alternatively, it is possible to use RS485-RS232 interfaces, which allow a maximum distance between keyboard
and matrix of 1200 metres. In this case the connection diagram is as follows:
KS KBK
RS485A
RS485B
KS KBK DB9
RX 2
TX 3
GND 5
RJjack 1 Interface
IN
White A
Yellow B
Page 25
RJjack Videotec
SW164OSM
yellow TX
white RX
red GND
RJjack2
OUT
RX yellow
TX white
GND red
Videotec
SW164OSM
TX
RX
GND
MNECKSKBK_0350