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HD2200
SECTION 4
HD22 14/03/01 Version 1 Issue 2
4.15
The gain controls have a range of ±6dB with a
preset value of 0dB. The options are:
Master
All 3 channels adjusted simultaneously
Y
Pb
Individual channel adjustment
Pr
To select each of the parameters, press the lower
left hand button
adjacent to >>>.
OFFSET
This allows adjustment of the offset for luminance
(Y), blue colour difference (Pb) and red colour
difference (Pr). The Master offset is applied to all
three channels simultaneously while the Y, Pb and
Pr offsets are only applied to the selected channel.
The controls are shown in 10-bit digital video
levels.
To select each of the parameters, press the lower
left hand button
adjacent to >>>. The options
are:
Master
All 3 channels adjusted simultaneously
Y
Pb
Individual channel adjustment
Pr
ACTIVE
Allows the user to adjust the output blanking.
Output blanking is used when it is required that
ranges of output lines or pixels are never active.
For example, it is possible to impose an artificial
letterbox by bringing the top output blanking down
and the bottom output blanking up.
Note that the HD2200 keeps a separate record of
output blanking for each distinct output active
picture raster.
To select each of the parameters, press the lower
left hand button
adjacent to >>>. The options
are:
Left
Adjusts the left-hand edge of output
blanking. A setting of 1 indicates that no
output pixels that are normally visible
should be blanked, 2 causes the first
output pixel to be blanked, etc.
Right
Adjusts the right-hand edge of blanking.
For example, 720 indicates that no
output pixels that are normally visible
should be blanked in the 525 (480) 29i
output standard. 719 causes the last
output pixel to be blanked, etc.
Note that the preset value will vary with
the output standard as it is equal to the
number of active pixels per line.
Top
Adjusts the top edge of output blanking.
A setting of 1 indicates that no output
lines that are normally visible should be
blanked, 2 causes the first output line to
be blanked, etc.
Bottom
Adjusts the bottom edge of blanking.
For example 486 indicates that no
output lines that are normally visible in
the 525(480) 29i output standard should
be blanked, 485 causes the last output
line to be blanked, etc.
Note that the preset value will vary with
the output standard as it is equal to the
number of active lines per frame.
MATRIX
Allows the colorimetry on the output signal to be
set.
The colour correction options are:
Auto
Automatically selects the
colorimetry most appropriate for
the output video standard.
REC
601
No colour space conversion is
applied.
SMPTE
240
Colorimetry to SMPTE 240
requirements is applied.
SMPTE
274
Colorimetry to SMPTE 274
requirements is applied.
BT709
Colorimetry to BT709 requirements
is applied.
None
No correction