T+A VSP 1250 R Betriebsanleitung Seite 66

Output resolution
Resolution, i.e. the number of pixels in the video image
which is generated by the VSP 1250 R. In addition to the
standard SMPTE resolutions, the VSP 1250 R supports
special resolutions such as XGA and WXGA. These
modes actually have their roots in the computer world,
but they are still used by a few video monitors and
projectors.
If your monitor's native resolution is XGA (1024 x 768) or
WXGA (1366 x 768), you may like to experiment by
selecting these settings on the VSP 1250 R, as they
could produce better picture quality, since your monitor
no longer has to re-calculate the signals if they do not
match its native resolution exactly.
Overscan
Overscan is a technique which is employed to trim off the
margins of the picture by a small percentage, and to
compensate for this by increasing the remainder of the
image to fill the screen. Since use of the Overscan
function forfeits part of the picture content, and also
reduces the picture resolution slightly, it should only be
used for picture sources which produce blurred picture
margins.
PCM (sound format)
PCM = Pulse Code Modulation. This is a digital sound
format used for transferring audio data. It involves no loss
of data.
Pixel
The term pixel (an abbreviation of picture element) refers
to a single point in an image. Video pictures consist of a
large number of individual points or dots, which are
arranged in lines and columns. The more pixels a picture
exhibits per unit area, the higher its resolution, or
definition - i.e. its capability to depict fine details
SMPTE
The SMPTE (Society of Motion Picture and Television
Engineers) has defined particular standard resolutions for
storing and transferring video signals. For example, the
normal PAL television resolution is 720x576 pixels, while
the approved HD formats are 1280x720 and 1920x1080.
Software Update
The VSP 1250 R contains a series of processors which
control the machine's functions as well as processing the
picture signals. The processors' method of working is
determined by software, and the software of the
VSP 1250 R can be replaced if necessary, e.g. if further
developments take place. This software replacement -
also known as a software update - can be carried out
using a special programming interface on the machine's
back panel.
Source-specific presets
B systems store many settings, such as surround
mode, picture values such as brightness, colour,
sharpness etc., for each input - i.e. for each source
device - separately and individually. This means that you
can set different preferred values for each source, which
are called up from the memory and set again each time
you switch back to a particular source device.
An example:
You are watching a DVD, and switch your receiver to 5.1
channel surround sound, and reduce the contrast on the
VSP 1250 R by two steps. Later you switch to your video
recorder, set the receiver to Stereo, and increase the
colour saturation by three steps because the colour
reproduction is slightly dull.
You later switch back to DVD as source: the system will
now switch automatically to 5.1 channel surround mode,
the colour returns to neutral, and the contrast is reduced
again by two steps. In simple terms this means that all
the settings are returned to precisely the values which
you set when watching a DVD earlier.
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