Installation and Operation Instructions
Occupant Copy
GBO-RS232 Interface Control
Class 2/PELV Device
Description
The GBO-RS232 Interface allows up to 8 GRAFIK Eye Control
Units to be interfaced with your Bang & Olufsen
®
Avant
™
Television. The GBO-RS232 enables your Home Theater to
execute “ON” & “OFF” commands.
Note: Only one GBO-RS232 can be installed on the same
MUX Link.
Features
The GBO-RS232 can send RS232 commands from the Bang
& Olufsen Avant Television to a maximum of 8 GRAFIK Eye
Bang & Olufsen Series Control Units. The following com-
mands are available:
Home Theater “ON”. The Avant Television turns [OFF]
and the projection system turns [ON]. This scene is predefined on the GRAFIK Eye Control Unit as scene 14.
Home Theater “OFF”. The Avant Television turns [ON]
and the projection system turns [OFF]. This scene is predefined on the GRAFIK Eye Control Unit as scene 13.
MUX LINK
1 2 3 4
1 2 3 4 5 6 7 8
LED1 LED2
1
PROGRAMMING INTERFACE
AUXILIARY CONTROL
GBO-RS232
COOPERSBURG, PA 18036
R
GRAFIK Eye 3000 Series
FOR WIRING OF 4000 SERIES, REFER
TO INSTALLATION INSTRUCTIONS
1 2 3 4
MUX LINK
1 2 3 4 5
RS232 LINK
Avant™ TELEVISION
RxD
TxD
COM
HOT/LIVE
SSA
Zone 3
Zone 2
Zone 1
CU WIRE ONLY
Neutral
Class 2
4
3
2
1
PELV (CLASS 2:USA)
R
2345
TO AVANT
TELEVISION
TO GRAFIK
EYE
MUX LINK RS232 LINK
1 2 3 4 5
1 2 3 4
COM
+V
MUX
COM
DATA
IN
DATA
OUT
MUX
N/C
N/C
POWER INPUTS:
MUX LINK 2 (+V): 12 (3000 SERIES)
MUX LINK 2 (+V): 24 (4000 SERIES)
For use with Bang and Olufsen®
systems only.
GBO-RS232 (shown with cover removed)
DIP Switches
Output Status
LEDs
Ground Screw
MUX Link to
GRAFIK Eye
Control Units and
Accesory Controls
TX Data LED
(LED 3)
RS232 Link
(to Avant
Television)
2
Installation
HOT/LIVE
SSA
Zone 3
Zone 2
Zone 1
CU WIRE ONLY
Neutral
Class 2
4
3
2
1
1 2 3 4 5
GROUND
GREEN
BROWN
1 2 3 4
Mounting
1. Mount the GBO-RS232 on a 4"x 4" junction box or directly
on a wall as shown in the Mounting Diagram. If metal conduit is not being used, ensure proper earth/grounding of the
metal casing by connecting an earth/ground wire to the
earth/ground screw. Remove front enclosure cover to expose
terminal blocks, DIP switches, and output status LEDs.
Wiring Diagram
Important Notes
■ Install in accordance with all applicable regulations.
■ Do not connect line voltage/mains power to device. Improper wiring can result in personal injury or damage to the device or to
other equipment.
■ This control can use Class 2/PELV wiring methods. Check with your local electrical inspector for compliance with national and
local codes and wiring practices.
3/8 in. (10 mm)
2. Strip 3/8 in. (10 mm) of insulation from wires. Each terminal
will accept up to two #18 AWG (1.0 mm2) wires.
3. Connect wiring as shown in the Wiring Diagram. LED 1
will be lit when the MUX Link is properly installed.
Wires should be inserted through the circular punchouts in the white metal enclosure so that the enclosure
cover can be replaced after installation.
4. Wiring to your Avant Television. For the RS232
Link, use the cable provided with the Avant Television,
Bang & Olufsen 4-pin USB cable (P/N 6270788). Wire
as shown below.
To up to 7 more GRAFIK Eye Control Units and 15 Wallstations
33 ft. (10 m) Maximum
(B&O 4-Pin USB Cable)
MUX LINK
RS232 LINK
Avant
Television
GBO-RS232 WIRING TERMINALS
Mounting Diagram
GBO-RS232
4” x 4”
Junction Box
GBO-RS232
Insert Wires
Through
Punch-Outs
W
A
L
L
W
A
L
L
5. Addressing GRAFIK Eye Control Units. Control
Units and Wallstations must be uniquely addressed for
use with the GBO-RS232. For addressing, see the
GRAFIK Eye Installer's Guide included with the Control
Units.
GROUND
GREEN
BROWN
Y
E
L
L
O
W
BANG & OLUFSEN
4-PIN USB CABLE
RS232 LINK
1
2
34
1 2345
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