4
5
3.0 GETTING THE BEST RESULTS
Many factors influence the quality and reliability of HDMI signal distribution
installations. The following are the main factors to consider, and basic
precautions that will ensure the best possible performance.
• Resolution tracking.
Refer to 4.0 “Planning a Matrix System” Set up the
sources to output the best resolution that all TVs can accept.
• Source resolution and video/sound quality.
Sources, such as satellite
receivers or cable boxes may output at low resolutions or deliver extremely
compressed video material, yielding poor results. Consider the sources when
planning and troubleshooting your system.
•
Output display devices.
The quality of the output signal depends largely
upon the type and quality of the HDMI display devices used.
•
Connection cables.
HDMI cable design and quality are extremely important
in long cable runs where capacitance can severely degrade performance. Use
premium cables; low quality cables are susceptible to interference. Always use
locking cables or good strain relief methods to prevent cables from becoming
loose over time.
•
Distance between the sources and the displays.
Using premium quality
cables the sources may be located up to 20m from the matrix, and the matrix
may be up to 15m from each display device. Longer distances are possible
using advanced HDMI extenders with DDC correction.
•
Interference.
Nearby electrical devices can have an adverse effect on
signal quality. For example, older computer monitors often emit very high
electromagnetic fields that can interfere with the performance of adjacent
video equipment.
Model HMX-144 4x4 Video/Audio Matrix
Version 1.3
POWER
ZONE
1
SOURCE
1
2
3
4
HDCP
HDMI
DVI
ZONE
4
SOURCE
1
2
3
4
HDCP
HDMI
DVI
ZONE
3
SOURCE
1
2
3
4
HDCP
HDMI
DVI
ZONE
2
SOURCE
1
2
3
4
HDCP
HDMI
DVI
POWER
5V DC
IR
HDMI ZONE OUTPUTS
ZONE 1
SOURCE 3
SOURCE 2
HDMI SOURCE INPUTS
ZONE 4
ZONE 3
ZONE 2
SOURCE 4
SOURCE 1
INT / AUTO
EDID
RS-232
