Videotec DCJ - Manuale (Pagina 182)

Page 50 MNVADCJ01_0543
5.14 Ademco m ultiplexer
5.14.1 Description
The Ademco AXMD16E / AXCD16EX digital multiplexer can be used to connect 16 video inputs that are
digitised and output for display in a composite image.
5.14.2 Direct conn ection
5.14.2.1 Cable
DCJ RJjack 1 RJjack 2 JAVELIN
RS485A white black RS485A
RS485B yellow green RS485B
The connection is RS485 (one-way) and the maximum distance between keyboard and multiplexer is 1200m.
5.14.2.2 Setting up th e multiplexer
The multiplexer can only be configured using its local keyboard and the mouse.
Set the communication mode as RS485, the correct baud rate and A type protocol.
Refer to the respective manual.
5.14.2.3 Setting up th e keyboard
When configuring the keyboard, the RRQRR submenu should be set as follows:
RPRR
<3,D8;
5272*2UD+,0*2
(8+5(7,DC
Control of an Ademco multiplexer.
There is a choice of four baud rates.
5.14.2.4 Operational test
If the keyboard is connected directly with the multiplexer configured as above, using the cable as above, it
should be possible to switch the video inputs immediately:
• press
!
to select multiplexer unit 1
• press
!
,
"
, to select the video inputs.
For each command that is sent from the keyboard a corresponding LED lights up on the local multiplexer
keyboard.
Warning! If the multiplexer unit number does not coincide, the commands sent by the keyboard will be
ignored.