8981nr 270 mb/s sdi noise reducer, Introduction – Grass Valley 8981NR User Manual
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8981NR Instruction Manual
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8981NR 270 Mb/s SDI Noise
Reducer
Introduction
The 8981NR module is a 270 Mb/s SDI component digital noise reducer
module. The module incorporates two different noise reduction methods,
targeted at different sources of noise. A recursive filter is effective for low
levels of wide-band (random) variations that have no frame-to-frame cor-
relation and a horizontal median filter is very effective for impulse noise.
Typical applications include reduction of random noise generated during
analog transmission or digital processing. Signals from various sources
with varying amounts of noise resulting from poor transmission and pro-
cessing will benefit by the reduction of bandwidth required later during the
MPEG compression process.
The 8981NR features:
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10-bit signal processing,
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Automatic 525/625 line standard selection based on input,
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Recursion filter for random noise reduction,
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Horizontal median filter for impulse noise reduction,
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Split screen mode with internal noise generator for setup purposes,
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Video processing adjustments including video gain and black level,
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Setting storage in non-volatile memory,
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Output EDH generated,
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VANC pass or blank selection,
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Set blanking width (line 20 or line 21) in 525 mode,
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Passes all HANC data, and
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Remote control lockout jumper disables remote control capability.