Digital display technology used in consumer electronic products in the
home display device development trend, and increasingly favored by
consumers, almost all users are aware that DVI and HDMI is pure digital
signal interface, the transmission of digital signals can be
demonstrated the best image picture quality and effects. So, what kind
of interface performance better?
Today's video settings
become very complex, according to the source format to determine the
distance of the monitor cable. At the same time, the connection distance
is the decisive factor to choose what kind of connection technology.
Two choices when you buy the connection cable - copper cable or fiber
optic cabling, about the Controversy which cable to choose has begun
since the introduction of the concept of optical and coaxial digital
audio cable. Now, most people think that they display is the same, no
matter which one and reject another, will not affect the audio quality.
When using low-bandwidth audio especially the wiring distance is
relatively short, the effect of copper cable or fiber optic cable
transmission is indeed the same.
However, full screen playback of
uncompressed digital signals is completely different resistance
performance due to the high native resolution of the digital signal as
well as copper cables, fiber optic signal conversion technology is the
most suitable choice for the connection of DVI or HDMI source. Of
course, all of the video signal converter with the same specifications
as the type of interface settings. DVI and HDMI digital signals are
high-speed high bandwidth signals, the maximum pixel signal 1080p signal
indicates that the screen pixels to 1920x1080, and updated 40 times per
second. HD signal so fast update rate and large amount of digital
bandwidth consumption, the problem of copper cable resistance will lead
to a loss of signal - for example, the signal can not be updated pixel
hour or error, or no screen, direct blue screen. When the copper cable
link distance of more than 15 feet, play 1080p image problems play 720p
or 1080i digital format signal copper cable to connect the distance must
be maintained within 25 feet. If you exceed this distance, it is best
to use fiber-optic cable.
The fiber-optic signal conversion
technology is theoretically no resistance, so it does not produce a
signal loss. The principle is to convert video source signals into light
waves, and its spread in the form of light to the playback device, and
then restore the digital video signal. If you want to enjoy
high-definition screen with no loss of signal or pixel, you can also use
a signal amplifier, of course, copper cables or fiber-optic cable used
in conjunction with the signal amplifier has a different role. Expand
the installation of copper cable only to enhance the electronic signals,
making it more "strong", to reduce signal loss due to the wiring length
is too long However, the biggest problem of this technique, the video
signal is enhanced at the same time, the error the signal has also been
enhanced, which causes the noise of the digital signal is enhanced and
the signal loss problem has not been fundamentally resolved. Another
problem is that even with the signal amplifier, DVI and HDMI signals are
not the "enhanced" can only be spread about 60 feet This is not only
inefficient, while also greatly increased costs. Optical signal
conversion technology is actually electronic signal to convert the
optical signal, therefore, can maintain the integrity of the signal
within a distance of 495 feet.
This is the IT organization
and cable companies use fiber reason for building the network, IT
transmitted signal bandwidth (typically to 0.6Gbps) is much lower than
the uncompressed video signal (usually 1.65Gbps), so when high-bandwidth
digital signal era upcoming, fiber optic cables are becoming
increasingly popular application is not surprising.
In addition to the difference between copper cable and fiber optic cable technology principles, when the select signal connectivity solutions, the best but also consider the following aspects:
1 Distance
If you are using copper cable, it is best to keep within the range of
25 feet If you need to use more than 25 feet length of cable, the best
choice for fiber-optic cable.
2, The forward-looking considerations
The user needs to cable and cable products with a long service life,
and generally to achieve more than a decade. Taking into account the
cable quality and the Ohira display image quality is closely related to
long-term connection, and display equipment, so this investment is
required. The popular video player screen resolution of 720p or 1080i,
the copper cable can be application. But the technological development
of digital signal at an alarming rate in the near future, we must
replace the DVD player and TV, then need to consider the cable can
support the new video system (especially to cable buried in the wall
users), it is best to buy a good 1080p signal transmission cable.
3, Test
It is very important to test it before installation of cable. Want to
check before buying the product terms of service and return policy of
the merchant Also, do not the cable has been buried in the floor or set
in the wall after found not suitable for video playback before the
layout of the newly purchased cable and take at least a few hours to
test it.
Cpbay - B2B Marketplace for Fiber
Optic Connector Manufacturers, Suppliers, Wholesalers at CPbay.com.
没有评论:
发表评论