商品編號: Belden-1277R
Belden-(1277R,1278R,1279R,1280R) 75 ohm Mini Hi-Res Component Video Cables (25 AWG Solid) (RGB, VGA, DTV and HDTV) 多芯迷你型組合數位訊號同軸電纜
Belden® Mini Hi-Res Component Video Cables are
Designed for RGB, VGA, DTV and HDTV Applications
The RGB standards were designed to address
analog video’s ability to capture and transmit
complex moving images, loaded with
information, utilizing analog-only equipment
and frequency-limited cables. Most RGB
cables available today are still designed
for these outdated standards, formats
and frequencies.
Precision analog video, utilizing cables that
provide greater signal integrity, delivers a
better picture than typical RGB transmissions,
but digital video and HDTV run at still higher
frequencies and make better use of component
video for even greater picture clarity.
To accommodate the need for higher
frequency, longer distance transmissions and
the ability to run more demanding applications
such as high resolution VGA on large screens,
HDTV, Hi-res CAD, animation, editing and
special effects, a true 75 ohm, high-frequency
cable with optimum design features is needed.
Belden Mini Component cables meet these new
high-end requirements.
The unique design of these cables also makes
them ideal for multiple runs of composite
video signals such as SDI or HDTV (video
snake cable).
Construction Details
Bundled mini coaxial cables are used for
component video formatted applications
that segment the video signal into Red, Green
and Blue elements, identified through use
of corresponding cable jacket colors (RGB
cables). Synchronization (Sync) and Vertical
Hold (Hold) signals can be embedded within
one of the elemental video components or
they can be transmitted separately utilizing
the 4th and 5th coaxes. When present, the
4th coax has a Yellow jacket; the 5th coax
has a Black jacket. Contemporary applications
sometimes include a 6th White-jacketed coax
for digital audio, auxiliary audio or video.
Belden Mini Component cables are available
in bundles comprised of 3, 4, 5 or 6 coaxes.
The conductors are 25 AWG (solid)
tinned copper, rather than the
traditional 26 AWG stranded analog
style. The insulation is high-density
foamed PE (CMR version) or foamed
FEP Teflon® (CMP version). Shielding is
Duobond® foil (100%) combined with
Belden’s unique interlocked serve shield.
The individual coax jackets are either
PVC (CMR) or PVDF (CMP). The overall
jackets are PVC.
Exceptional Benefits
Superior cable design means more
benefits to both the installer and enduser.
Key features and benefits include:
> Solid copper center conductor —
low attenuation, easier termination.
> High velocity, low-loss PE and
FEP Teflon insulations — low
attenuation, long distances
and improved timing.
> Foil under braid shielding —
Broadcast Quality standard,
contributes to low attenuation
and is easier to terminate.
> The foil layer of the shield is
lightly-bonded to the dielectric
to hold in place for RCA- and
F-style connectors, but can also
be removed if desired for BNC
connectors to minimize the potential
for conductor-to-shield shorts.
> Unique interlocked serve shield
(won’t open if bent) — achieves
uniform, consistent coverage.
> Round, uniform, flexible jacket —
for professional appearance, proper
boot fit, easy flexing for installation
and equipment hook-up.
> Sweep tested — every reel
is tested and verified to have a
minimum Return Loss of 20dB
at all frequencies up to 850 MHz.
> True 75 ohm impedance — ensures
no impedance mismatches for
optimal whole-system performance,
quality signal transmission over long
distances.
> Fits standard Mini RGB and
coaxial connectors — for
installation flexibility.
> Color-coded jackets — for easy
circuit identification.
> Rip cord — included for easy
jacket removal.
> Sequential marking — for usage
tracking during installation.
See table (opposite page) for a features/
benefits comparison of traditional
analog Mini RGB cables vs. Belden
Mini Component digital-ready cables.
Applications
Belden Mini Component cables are
ideal for high-resolution monitor
and projection imaging in the
following situations/facilities:
> Corporate boardrooms
> Command and control centers
> Multi-purpose auditoriums
> Teleconferencing centers
> Home theater
> Permanent and temporary
performance venues
> Post-production facilities
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