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INITIAL CONNECTION, IR/RS232 CONTROL CONNECTIONAND UNDERST
ANDING RS232
8. Understanding RS232 Connection & Signals
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7iii. Initial Connection
Connect an HDMI input (such as Blu-Ray, Games
Console, Satellite, Cable, media server etc.) to a
HDBaseT transmission device (such as a Wyrestorm
TX-1UTP-IR-70-POH transmitter, AMP-001-010 digital
amplifier or MX-PP-POH matrix solution.
Connect a good quality, well terminated Cat5e/6
cable of no more than 70m/230ft in length between the
UTP/HDBaseT output of the transmission device to the
UTP Input of the RX-70-IR-POH
Attention:
70m/230ft is the maximum
recommended transmission distance for this
classification of HDBaseT equipment and denotes
perfect transmission conditions - including straight
cable runs with no electrical interference, bends,
kinks, patch panels or wall outlets. If any of the
above are a factor in your installation, transmission
range may be affected – take care to avoid where
possible.
Connect the HDMI sink (LED/Plasma display or
digital projector) to the HDMI Output of the RX-70-IR-
POH
If daisy-chaining receivers, repeat process for all
RX-70-IR-POH units installed from your transmission
devices.
For two way control of connected sources and
displays from either location, connect IR transmitters to
the IR TX ports of the HDBaseT Transmitter devices and
RX-70-IR-POH.
Insert IR receivers into IR RX ports of the HDBaseT
Receiver devices and matrix.
If using an RS232-based control system, insert
cables into the RS232 ports of devices to enable RS232
control.
Ensure IR TX transmitters are firmly attached over IR
sensors of devices to be controlled.
NOTE:
If unsure of positioning, IR sensors can be located
on devices by shining a flashlight onto the facia of the
device - the IR sensor should be identifiable as a small
round sensor behind the panel. Consult your device
manufacturer handbook if difficulties are experienced.
Ensure IR RX receivers are positioned in clear line of
sight to the remote handset used to control them.
Attention:
The RX-70-IR-POH is capable of
recieving Power-over-HDBaseT signal distances
up to 70m/230ft when used between PoH-enabled
devices such as a MX-PP-POH matrix or PoH
transmitters.
7iv. IR/RS232 Control
Connection
RS-232C, EIA RS-232, or simply RS-232, refers to
the same standard defined by the Electronic Industries
Association in 1969 for serial communication.
DTE and DCE
DTE stands for Data Terminal Equipment. A computer
or control system is DTE and connects to Data
Communication Equipment, or DCE such as an Amp,
Matrix or Modem.
DTE equipment typically feature a Male Connector, while
DCE contains a Female Connector, although that is not
always true - a simple way to confirm is to measure Pin
3 and Pin 5 of a DB-9 Connector with a Volt Meter. If a
voltage of -3V to -15V is achieved, the device is DTE. If
the voltage is on Pin 2, then the device is DCE.
NOTE:
The result for a DB-25 Connector is reversed
(Please refer to DB-9 to DB-25 conversion table)
1 2 3 4 5
6 7 8 9
RS-232 Pin outs (DB-9)
A male DB-9 connector viewed from the front.
Reverse or back view of male connector for
Female Connector.
