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Wallboard Installation & Maintenance
System Wiring
The principle for wiring up your display wallboards is that the PC output port is
connected to the input of each wallboard.
The connection is RS485 and the screen of the cable is connected to the wallboard
signal ground, which is floating.
The wallboard housing frame ground is connected to earth by the power cable
RS485
This standard officially allows 30 wallboards to be connected via a RS485 transmission
cable of up to 1200 Metres to a PC RS485 port.
The PC TX+ is connected to the wallboard RX+; similarly, the PC TX- is connected to
the wallboard RX-. The recommended technique is to run a screened cable from the
PC to the nearest wallboard, then from this wallboard to the next nearest wallboard etc.
At the last wallboard on the bus, it is necessary to connect a 120Ω terminating resistor
between the wallboard RX+ and RX- connections within the RJ45 connection box. See
the diagram below.
The installation technique is that data input of each display is electronically connected
to the transmit output of the PC.
Compact Contact Center Installation Manual
40DHB0002USBG Issue 4a (05/29/2003)
Ferrograph Wallboard 10 - Page 61
Ferrograph Wallboard 10 - Page 61
Wallboard Installation & Maintenance
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