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Optional HDMI 
Cable clip (included)

Extending Control Signals with KD-CATHD150 

KD-CATHD150 baluns can be used to extend bi-directional IR signals or uni-directional 
RS-232 control. Use the 3.5mm mono mini connection on the KD-CATHD150Tx and  
KD-CATHD150Rx. 

Tip = Signal

Shell = Ground

Extending CEC (Consumer Electronic Control) Signals

KD-CATHD150 supports extension of CEC signals when no connections are made to 
either 3.5mm port of the KD-CATHD150 ends.  KD-CATHD150 does not support CEC 
and extension of IR / Uni-Directional RS-232 simultaneously.  To disable CEC support, as 
may be desired in many custom A/V applications, please connect a 3.5mm plug into any 
of the ports on KD-CATHD150Tx or KD-CATHD150Rx.  
CEC is an HDMI feature designed to command and control up to ten CEC-enabled 
devices that are connected via HDMI with a single remote.  CEC does not necessarily 
rely upon the user to initiate such device control and therefore may cause undesirable 
results in systems with multiple HDMI sources or multiple HDMI displays.

Troubleshooting

Most issues with the KD-CATHD150 setup will involve resolution and distance 
performance.  If you experience problems (no image, video artifacts, picture dropout, 
noise) here are a few things to try.

1. 

Use the shortest possible HDMI  and CAT5e/6 cables between devices.

2. 

Lower the output resolution of the image source.

3. 

Use Key Digital

®

 HDMI cables. 

4. 

Re-terminate CAT5e/6 cabling. 

5. 

Ensure that you source devices have 12-bit Deep Color output disabled

Mounting the KD-CATHD150 units and  
securing HDMI connections 

Once you have verified operation of the unit with your cables, 
secure the mounting clip to a convenient location. Carefully 
secure included mounting brackets onto the KD-
CATHD150Rx or KD-CATHD150Tx chassis by fastening 
screws until mounting clips are fixed firmly against 
the units.
An optional HDMI cable clip (included) enables 
a method for securing HDMI cables the 
KD-CATHD150 units and helps defeat 
intermittent or complete signal loss due to 
poor connection. 

DVI applications for the KD-CATHD150 

 

The KD-CATHD150 can also be used to extend Digital DVI cable runs.

 

For the applications, use appropriate Dual Link DVI to HDMI adapters.

Link Lights 

To achieve solid Link Lights on the KD-CATHD150Tx and KD-CATHD150Rx baluns, all 
connections must be solid and properly synced.  This includes the HDMI connectivity 
between source and KD-CATHD150Tx balun, Data 
and Video/Audio CAT5e/6 connectivity between KD-
CATHD150Tx and KD-CATHD150Rx baluns, and HDMI 
connectivity between KD-CATHD150Rx balun and display.

KD-CATHD150_Manual.indd   4-5

5/31/12   10:42 AM

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