AT-UHD-CAT-4ED
21
In pass-through mode, RS-232 commands are passed-through the AT-UHD-CAT-4ED, transmitted over HDBaseT to
a receiver unit, and then to the display (sink) device. Note that each
RS-232 / IR
port is assigned to an
HDBaseT
OUT
port. This assignment is fixed and cannot be changed, as shown in the table below.
Pass-through mode
RS-232
(RS-232 / IR 2)
HDBase
T
(HDBase
T OUT 2)
RS-232
2
CO
M
NC
NO
CO
M
NC
NO
CO
M
NC
NO
CO
M
NC
NO
+12V SIG
G
ND
+12V SIG
G
ND
+12V SIG
G
ND
+12V SIG
G
ND
1
COM
PONE
NT
HDM
I
1
2
3
4
5
6
SER
IAL
1
IR OU
T
SER
IAL
2
L
R
DIG
ITAL
COA
X OU
T
AUDI
O OU
T
AUD
IO I
N
ETH
ERNET
2
3
4
VID
EO
OUT
48V DC
FACTORY
RESET
AT-UHD-EX-100CE-RX
Display
Control System
AT-UHD-CAT-4ED
4
3
2
1
OUT
IN
HDMI
HDBaseT
LOCK
EDID
POWER
AT-UHD-CA
T-4ED
INT
LEARN
DC
48V
RS-2
32
HDBase
T IN
HDMI
OUT
RX
TX
1. Connect the RS-232 cable from the control system to the desired
RS-232 / IR
port on the AT-UHD-CAT-4ED.
Refer to
for instructions on preparing the cable.
2. Connect an Ethernet cable from the desired
HDBaseT OUT
port to a receiver. In this example, the HDBaseT
cable is connected from
HDBaseT OUT 2
to an AT-UHD-EX-100CE-RX receiver (the RS-232 cable is connected
from the control system to the
RS-232 / IR 2
port).
3. Connect an RS-232 cable between the display (sink) and the receiver.
4. Adjust the RS-232 settings on the control system to match the requirements of the sink device. For example, if
the RS-232 settings for the display device are 9600, N, 8, 1, then set the control system to the same settings.
If the control system and sink device settings do not match, then RS-232 control will not function.
Device Operation
RS-232 / IR Port
HDBaseT Port
RS-232 / IR Port
HDBaseT Port
RS-232 / IR 1
HDBaseT OUT 1
RS-232 / IR 3
HDBaseT OUT 3
RS-232 / IR 2
HDBaseT OUT 2
RS-232 / IR 4
HDBaseT OUT 4
