Ensemble Designs 5470 Digital Processing Amplifier and Legalizer User Manual
Page 23
The Filters menu shown below allows setting the luminance and chroma sharpness and
horizontal bandwidth (with DNR option) with the following detail enhancing controls:
•
Lum Sharp – set to Off to bypass detail enhancing filters. Set to Off , 1/4, 1/2, or
Max to set the sharpness of the luminance portion of the signal.
•
Chr Sharp – set to Off to bypass detail enhancing filters. Set to Off, 1/2, 1/4, or
Max to set the sharpness of the chrominance portion of the signal.
•
Lum Bandwidth – used only when the 5475 DNR (Digital Noise Reduction)
option is installed. Set to Normal to allow full bandwidth (no effect), or 3/4 Band,
1/2 Band, or 1/4 Band.
•
Chr Bandwidth – used only when the 5475 DNR (Digital Noise Reduction) option
is installed. Set to Normal to allow full bandwidth (no effect), or 3/4 Band,
or 1/2 Band..
These bandwidth functions utilize filtering applying a sharp cutoff low-pass filter
to effectively remove high frequency and impulse noise. This is especially useful in
applications such as an MPEG pre-processor to reduce bandwidth required to
transmit an MPEG-encoded signal. The result can be a cost effective method of
delivering video via satellite link.
Model 5470 Digital Proc Amp and Model 5475 DNR
5470/5475-23