Imagine communications Selenio 6800 HUC6800, Installation And Operation Manual

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HUC6800
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Installation and Operation Manual 31
Chapter 3: Operation
Overscan Mode
The overscan mode is similar to a zoom mode. When enabled, it
discards a specified number of lines and columns of pixels around the
borders of the input image active picture region before upconversion.
The active picture region for 525 standard starts on line 21 and ends at
line 262. Therefore, an overscan setting of one line implies that
upconversion starts at line 22 and ends at line 261. In addition to the
two discarded lines, the first and last pixel of each remaining line in the
active picture region are discarded.
The overscan mode prevents embedded data in the active picture
region, such as closed captioning, from being upconverted.
To enable the overscan mode, scroll to the
ARC Overscan parameter
and then select the number of rows and columns for cropping.
Bypass Mode
When an HD-SDI signal is input to the or C, the
module detects that no upconversion processing on the input is
required. Therefore, the module operates in Bypass mode, which means
that the module’s input signal bypasses the upconverter and is output to
the program and monitoring outputs unprocessed. However, if
On-Screen Display (OSD) monitoring is enabled, the OSD will be
present in HD Prog/Mon Output 1 and HD Prog/Mon Output 2. For
information about the OSD monitoring feature, see
“On Screen Display
(OSD) Monitoring” on page 34 .
When the module is operating in Bypass mode, many parameters are
disabled. See
Table 3-2 for list a list of parameters that are disabled
when the module is operating in Bypass mode.
Table 3-2. Parameters Disabled in Bypass Mode
Disabled Parameters
LovOut DmxErrCtrl
TstPat AudEmbSrc
TstPatOn AudEmbPr1
CrcErrPollTime AudEmbPr2
CrcErrClr AudEmbPr3