5
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.
●
Source Switching -
If the source device will be switched often during operation,
as in the case of an HDMI switch connected at the head end of the distribution
system, use the SYS-RST switch. This setting prevents the 1398D from
interrupting video and audio transmission to re-learn EDID settings each time the
source is switched, or a TV is hot-plugged to the distribution system.
●
Resolution tracking -
Set the source to output the best resolution that all
TVs are capable of displaying. Utilize the following instructions to ensure that
all TVs connected to the DA receive video signal. If the TVs have a wide range
of resolution capabilities, the highest resolution sets may not be shown to their
best advantage.
●
Source resolution and video/sound quality -
Sources, such as satellite
receivers or cable boxes can output at low resolutions or deliver extremely
compressed video material that may yield poor results. Consider the source
when planning and troubleshooting your system.
●
Output display devices -
The quality of the video image depends upon the
type and quality of the HDMI display devices used. The device with the lowest
resolution will be the reference standard for the rest of the HDMI displays
connected to the DA.
●
Distance between the DA source and the displays
-
Long distances are
possible, but quality cables and advanced HDMI extenders may be necessary
for the longest runs.
●
Connection cables -
HDMI cable design and quality are extremely important
in long cable runs where capacitance can severely degrade performance. Use
Premium High Speed Certified HDMI
cables designed to handle 4K resolutions
and 3D; low quality cables are susceptible to interference. Always use good
strain relief methods to prevent cables from becoming loose over time.
●
Interference from nearby electrical devices -
This 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 nearby
video equipment.
Higher
Lower
Shorter Distance
Longer Distance
Resolution Refresh Rate Bit Depth
