4.  DESCRIPTION 
The  wallboard  has  a  10Base-T  Ethernet  input  and  a  current-loop  and  V24-compatible 
asynchronous serial input. Such inputs are used to receive display controls. The wallboard also 
has  a  current-loop  asynchronous  serial  output  for  the  parallel  connection  of  up  to  seven 
additional 2x16 wallboards. 
 
The wallboard can be connected: 
 
•  Directly behind the A4300 (V24). 
 
•  Directly behind A4400 (V24) for ACD/CCD applications. 
 
•  Behind  the  CSS  control  panel  (V24)  (managed  by  the  Wall  Board  Manager 
application). 
 
•  Through the local Ethernet network to the CSS control panel (managed by the Wall 
Board Manager application). 
 
 
 
4.1  Synopsis 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Ethernet Connection
 
 
Wallboard 1