File No.
RD-I-18-023
Version
2.0
HDM-B88 User Manual
Effective Date
2018-12-17
Page
9 / 19
9
5.2 Rear Panel
Number
Name
Function descriptions
1
HDMI INPUT
Connect to the HDMI input source devices such as
a DVD player or Set-top Box.
2
HDMI OUTPUT
Connect to the HDMI output source devices such
as a TV player or monitor.
3
IR EXT
If the front IR sensor of unit is obstructed or the
unit is installed in a closed area out of infrared line of
sight, the IR receiver cable can be inserted to this IR EXT
port to extend IR signal.
4
DC 12V
Plug the 12V/3A adapter to AC wall outlet for
power supply.
5
CONTROL
LAN: connects to an active Ethernet link by an
RJ-45 cable.
RS-232: Connect to a PC or control system by D-
Sub 9-pin cable to control the matrix with RS-232
commands.
6
AUDIO OUTPUT
Connect to audio amplifiers or speakers.
7
GND
Connect the GND port to the ground.
