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© MuxLab Inc. 2013

 

4.

 

To install the Receiver: 

4a.

 

Connect the Receiver to the HDMI display equipment with an HDMI compliant 
cable. 

Note: When used with MuxLab’s HDMI Matrix Switch, please consult the Matrix 
Switch Installation Guide. 

4b.

 

Connect one (1) Cat 5e/6 cable to RJ45 LINK connector on the Receiver. 

5.

 

Connect the 5 VDC power supply to the Receiver first, and then plug the power 
supply into an AC power outlet. Connect the 5 VDC power supply to the 
Transmitter first, and then plug the power supply into an AC power outlet. If power 
is present, the green power LED of the Transmitter and the Receiver will be ON. 

Note: Power-up the HDMI / RS232 Extender only after all connections are made. 

6.

 

Power-up the HDMI equipment and verify the image quality. 

7.

 

This product support bi-directional IR control. If infrared remote control is needed 
to control the Source equipment from the Display, connect the IR Sensor to the 
3.5mm Stereo Jack of the receiver and the IR Emitter to the 3.5mm Mono Jack of 
the Transmitter.   

Note: The IR Sensor can be distinguished from the IR Emitter by looking at the 

3.5-mm plug.  The IR Sensor has a 3.5mm stereo plug (3 Contacts) and the 
IR Emitter has a 3.5mm mono plug (2 Contacts). 

8.

 

Position the IR Sensor so that it is aimed toward the hand-held remote control. For  
clear IR signal reception, aim the hand-held remote control toward the top of the IR 
Sensor enclosure.   

9.

 

Position the IR Emitter as close as possible to the source’s IR Sensor (i.e. DVD 
player). For a clear IR signal reception, the IR Emitter may be affixed to the 
source’s IR Sensor. The IR Emitter’s signal is transmitted from the side of the 
enclosure. 

10.

 

If infrared remote control is needed to control the Display equipment from the 
Source, connect the IR Emitter to the Receiver’s 3.5mm stereo jack and connect 
the IR Sensor to the Transmitter’s 3.5mm mono jack. 

11.

 

The 500454 also supports RS232 pass-thru in order to allows a device such as 
commercial monitors to be controlled as in digital signage application.  Please refer 
to the following diagram for the cabling connection.  

12.

 

The following diagram shows the final configuration. 

 

 

Troubleshooting 

The following table describes some of the symptoms, probable causes and possible solutions 
in respect to the installation of the HDMI / RS232 Extender: 

Symptom 

Tx LEDs 

Rx LEDs 

Probable 

Cause 

Possible 

Solutions 

Power HDMI RJ45 Power HDMI RJ45

No Image 

OFF 

OFF 

OFF

OFF 

OFF 

OFF No power 

•  Check power 

connections 

No Image 

ON 

OFF 

OFF

ON 

OFF 

OFF UTP Cable 

•  Check the UTP 

cables. 

No 

Image 

ON OFF ON ON OFF ON 

HDMI Cable 

•  Check the HDMI 

Cable. 

No Image 

ON 

ON 

ON 

ON 

ON 

ON  Synchronisation  •  Check cable length. 

Flickering 
Image 

ON ON ON ON ON ON 

Synchronisation 

• 

Check 

cable 

length 

•  Check the HDMI 

Cable Quality. 

Choppy sound 

ON 

ON 

ON 

ON 

ON 

ON  Synchronisation  •  Check cable length 

•  Check the HDMI 

Cable Quality. 

Green or pink 
hue 

ON ON ON ON ON ON 

DDC 
communication 

•  Cycle power of the 

HDMI Extender. 

•  Check UTP cables 

and replace. 

Image flickers 
when powering 
up nearby 
equipment 

ON ON ON ON ON ON 

Interference  • 

Use 

STP 

cables 

IR not 
functioning 

ON ON ON ON ON ON 

Remote 

control 

not directed to 
the IR Sensor or 
IR Emitter not 
directed to the 
source. 

•  Make sure the IR 

Sensor is directed 
towards the remote 
and the IR Emitter 
to the equipment 

IR not 
functioning 

ON ON ON ON ON ON 

Interference 
from sunlight, 
Fluorescent, 
Neon or 
Halogen lights 

•  Place the IR 

equipment away for 
the interfering light 

IR not 
functioning 

ON ON ON ON ON ON 

Interference 
from RF 
radiation from 
the TV 

•  Place the IR 

equipment away for 
the RF radiation 

If you still cannot diagnose the problem, please call MuxLab Customer Technical Support at 
877-689-5228 (toll-free in North America) or (+1) 514-905-0588 (International). 

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