Videotec SM84A Manuel D'instructions page 54

3.5.4.3 Multiplexer (A UX line)
For the type of Multiplexer to be used, see the following connection tables
Matrix (AUX line) –Javelin/Hitron Multiplexer RS 485 connection
MATRIX RJ-jack 1
RS485-A White
RS485-B Yellow
Matrix (AUX line) –SP16C Videotec Multiplexer RS 485 connection
MATRIX RJ-jack 1
RS485-A White
RS485-B Yellow
3.5.4.4 VCR
The Trigger impulse is recognised on the rising or falling edge which can be set at the matrix programming
stage. Connect the VCR input video with output video n°4 of the matrix (VCR dedicated output). For the VCR
trigger on the other hand, refer to the following connection table:
Matrix – VCR connection
Matrix DB25
Pin 19 – Trigger
Pin 20 – Ground GND
3.5.4.5 PC
It is possible to connect a PC for remote control of the matrix or for the firmware update using a standard 9-pin
serial extension cable (DB9M - DB9F) and connecting it to the matrix DB9 ("PC") socket.
If the Macro communication protocol, given in the appendix, is used it is possible to completely control the
matrix and record noteworthy events when necessary.
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RJ-jack 2 Mux
Black RS485-A
Green RS485-B
RJ-jack 2 Mux
Black RS485-A
Yellow RS485-B
VCR
Trigger pin
Ground pin
MNVCSM84A_0408