Videotec SW164OSM, Operating Instructions Manual

Page: 54 / 135

Page 17 SW164OSM 9901
Connect the telephone cables according to the following schemes :
KEYPLUS/DCS2 - SW164OSM video matrix connection
4.6.4.2 Personal Computer
The connection of the matrix to a Personal Computer must be carried out according to the
following scheme :
Before the connection, it is necessary to observe the following precautions:
1. Check that the serial channel used on the computer is not already used by other
peripheral units (the mouse is usually connected to the serial COM1)
2. The matrix must be set on RS232 transmission mode
3. The three wires of RJ-connector box must not be longer than 15 meters
4. The PC serial unit (male connector on the back of the computer) can be a DB9 or
DB25; check the connections in the following table:
5. Besides the connection between RJ-connector box and DB connector, it is necessary
to put two bridges on the DB9 / DB25 connector (Personal Computer side) as shown in
the following table:
Current Loop connection
KEYPLUS / DCS2 SW164OSM
TX CL Yellow ----------------- Black RX CL
GND CL Red ----------------- Green GND CL
RX CL White ----------------- Blue TX CL
RS232 connection
KEYPLUS / DCS2 SW164OSM
TX RS232 Black ----------------- Yellow RX RS232
GND RS232 Green ----------------- Red GND RS232
RX RS232 Blue ----------------- White TX RS232
SW164OSM
KEYPLUS
Matrix - Personal Computer
RJ-connector
box
DB9
connector
RJ-connector
box
DB25
connector
Red pin 5 Red pin 7
Yellow pin 3 Yellow pin 2
White pin 2 White pin 3
Bridges on DB connectors
DB9 connector DB25 connector
Bridge between pins 4 and 6
Bridge between pins 7 and 8
Bridge between pins 20 and 6
Bridge between pins 4 and 5