Link electronics HD SD SDI Distribution Amplifier VDA-55 Manuale utente
LINK ELECTRONICS, INC.
HD or SD DIGITAL DISTRIBUTION AMPLIFIER
FEATURES Model VDA-55
mDC Powered, Portable
mSMPTE 259M, 344M, 292M compliant
mWall Wart Power Supply
mHD SD SDI Input
mFour HD SD SDI Outputs
mLock/Format Indication
mAutomatic Equalization and Re-clocking
mCompact Size
HD SD SDI distribution amplifiers combine
exceptional performance with both value and
compact size. The VDA-55 supports 143Mb/s,
270Mb/s and 1.485Gb/s Auto Rate Detection with
"Power OK", "Lock" and "HD" indicators. The
compact size of this distribution amplifiers, allows
it to be located in spaces where standard rack
space is limited.
The LINK VDA-55 HD SD SDI DA restores the
incoming signal to its proper amplitude. The signal
is reshaped with automatic equalization, and DC
restoration. The VDA-55‘s maximum equalized
cable length; for SD up to 250 feet at 270Mb/s, and
HD up to 100 feet at 1.485Gb/s. Four outputs are
provided on the end panel, as well as a detachable
DC power cable.
There are three LED’s on the end opposite the BNC
connectors, showing Lock, Signal Presence and
DC Power. There are four outputs that represent
the input.
The VDA-55 input signal can be 143Mb/s,
177Mb/s, 270Mb/s, 360Mb/s, 540Mb/s, and 1.485
Gb/s standards.
The VDA-55 carries a10-year warranty including
parts and labor.
The three LED's show the status of the input
signal; locked, and whether the data is Serial
Digital standard definition, or High Definition, HD
SDI. The signal output level is 800mV p-p, and
reclocked. The VDA-55 can be used in places
where space is a premium and at the same time
get excellent performance and lower cost.
The VDA-55 is designed for applications that
require equalization, re-clocking and distribution for
HD SD SDI digital video as per SMPTE 259 (SD1)
and SMPTE 292 (HD). The VDA-55 includes an
automatic input cable compensation circuit
commonly referred to as an adaptive cable
equalizer.
The VDA-55 includes acrystal referenced re-
clocking circuit that senses three data rates: 143
Mb/s, 270Mb/s and 1.484 Gb/s. If the data rate is
one of these three rates the re-clocker will
automatically activate and reduce high frequency
jitter. If the incoming data rate is not 143 Mb/s.
270Mb/s or 1.484 Gb/s, then the VDA-55 re-
clocker will go into the bypass mode. If the data
rate is 143 Mb/s or 270 Mb/s, the VDA-55 output
rise times are slowed down to comply with the
SMPTE 259 specification. The default for the VDA-
55 is the faster SMPTE 292 HD rise time.
LINK ELECTRONICS, INC. m2137 Rust Ave. mCape Girardeau, MO 63703
Phone: 573 334 4433mFAX: 573 334 9255
BNC VIEWING ANGLE
VDA-55 SERIAL DIGITAL DISTRIBUTION AMPLIFIER
SPECIFICATIONS
Serial Digital Video Input:
Number of Inputs: ........................................................................... 1
Connectors: ............................................................................BNC
Standards:
Composite: ...................................................................... 143Mb/s
Component: ...........................................177Mb/s, 270Mb/s, 360Mb/s, 540Mb/s
HD Component: .................................................................1.485Gb/s
Impedance:.........................................................................75 Ohms
Return Loss:.......................................................................... >15dB
Signal Level ..........................................................................800mV
Input Cable Length Max:
SD, : ................................................................. 250 Feet @ 270Mb/s
HD,: .................................................................100 Feet @ 1.485Gb/s
Jitter: ........................................................................... 0.2 UI P-P
Digital Outputs:
Number of Outputs:......................................................................... 4
Connectors: ............................................................................BNC
Standards: ....................................................................Same as input
Impedance:.........................................................................75 Ohms
Return Loss:.......................................................................... >15dB
Signal Level: ......................................................................... 800mV
Overshoot: ................................................................... 8% of Amplitude
End Panel LED:
Lock Detect: ............................................................................ LED
HD: .................................................................................... LED
DC Power: .............................................................................. LED
ENVIRONMENTAL:
Temperature: ..............................................................0Eto 50EC Ambient
Humidity: .........................................................10% to 90% non-condensing
Power: .............................................................................4.2 Watts
MECHANICAL:
Height: .............................................................................. .75 Inch
Width: ............................................................................... 4.0 Inch
Depth: .............................................................................. 2.0 Inch
Weight: ................................................................................. 4 Oz
LINK ELECTRONICS, INC. 2137 Rust Avenue; Cape Girardeau, MO 63703
Phone: 573 334 4433; FAX: 573 334-9255
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