Ensemble Designs 8500 Composite / SD Legalizer and Video Processing Frame Sync - Manual (Page 2)

8500 SERIES OVERVIEW
The 8500 Video Processing Frame Synchronizer, along with its optional submodules,
provides a real "do it all" module. A block diagram of module functions is shown on the
following page.
With component and composite analog inputs as well as serial digital video input, the
8500 accepts nearly any signal in a facility. The SDI input is carried at full uncompressed
bandwidth throughout the entire module and EDH monitoring of the digital input alerts
you to any incoming problem. Analog inputs are 4x oversampled at 12 bits of resolution.
Composite signals are decoded using an adaptive comb filter. The proper 525 or 625
standard is automatically selected by the 8500 module.
Input video is synchronized to a house reference by a TBC/Frame Synchronizer. Noisy and
jittery analog sources are faithfully tracked to provide a steady, genlocked output,
ensuring proper time base correction for virtually any source, even a consumer VHS
machine. Select the SDI input and the 8500 is a serial digital frame sync.
The 8500 has a full-featured Proc Amp for adjustment of every signal parameter. Proc
controls include Video and Chroma Gain, NTSC style hue rotation, Black Balance, and
pedestal. Black and White clips can be set to prevent excessive signal excursions. To help
optimize the settings in the Proc Amp, a Split Screen mode allows you to compare the
processed output with the original material.
A Detail Enhancer recovers information that has been lost due to poor frequency response
in upstream systems.Certain values represented in serial digital component may be illegal
in the NTSC or PAL composite domains. The Predictive Composite Clipper mode identi-
fies picture elements that would be illegal in analog composite, and limits color saturation
and luminance excursions.
Selective (toothed) vertical blanking lets you choose to pass or strip content in the vertical
interval on a line by line and field by field basis.
The 8500 has simultaneous SDI and analog composite outputs. They are fully timed to
your house reference, including the subcarrier and ScH phase of the composite output.
The analog output is constructed at 8x oversampling with 12 bits of quantizing resolution.
The 8520 Digital Video Noise Reducer (DNR) is an optional sub module that can be added
to the 8500 Video Processing Frame Synchronizer. The noise reduction process is down-
stream of the 8500 Proc Amp controls. The 8520 DNR can be used with any 8500 video
input source. It only adds 4 microseconds to the throughput delay of the 8500, so it does
not introduce problems with system timing. The 8520 DNR is motion and scene adaptive.
It removes unwanted noise and artifacts, making it perfect for MPEG compression prepro-
cessing and satellite or ENG feeds.
Several forms of noise reduction are employed to ensure the best possible performance.
Recursive Temporal Noise filtering includes Simple Recursive, Motion Adaptive and
Motion Adaptive with Impulse filter. Controls are provided for maximum signal to noise
improvement and for noise threshold. These can be set manually or run in automatic
mode.
Because the 8500 is an Avenue module, every function and parameter can be controlled
from an Avenue Touch Screen, Express Control Panel, or the Avenue PC Control
Application. While it can be used to control any Avenue module, the Express Panel really
shines when used with the 8500 Signal Acquisition system modules. With dedicated video,
Model 8500 Series Modules
8500-2