Videx VX2300 - Page 27

VX2300 2 Wire Video Digital System
PrtCode:VX2300_2_9.doc – Pag.27 08/03/2011 Rev.2.9
BUS LINE TERMINATION JP1
The factory preset for this jumper is “A” position: termination enabled. In case of more units (intercoms, videophones or video monitors) in a parallel
connection (bus wires are connected to the terminals of the first unit then from this to the second and so on up to 4 units max) JP1 must be set to A po-
sition only for the last unit in the chain while on all other units must be set to B position (bus termination disabled). In case of units of different type, vide-
ophones, video monitor, hands free or standard intercoms etc. remains fixed the rule that the bus termination must be enabled only on the last unit in
order of connection.
INTERCOM CONNECTION BOARD
A
B
JP1
1
2
3
4
5
6
7
8
9
10
Fig.2
SIGNAL ON CONNECTION TERMINALS
Terminal Signal Description
1 GND
Ground
2 LED
Auxiliary LED +12Vdc Input
3
4
5 LB
Local bell active low input
6 AL
Alarm input (not implemented yet)
7
8 BUS2
Bus input
9
10 BUS1
Bus input