4-48 Model D9854 Advanced Program Receiver Installation and Operation Guide 4021470 Rev D
Setup Menu: Services, Continued
Note: Active Format Descriptor (AFD) - normally it is necessary to set both the TV
Aspect Ratio and Conversion to correctly display the video program on the TV
system. The Auto AFD option enables the receiver output to automatically match
the display format of the video program to the TV system based on specific (uplink)
program information carried in the transport stream. In this case, the receiver
performs the conversion based on the TV Aspect Ratio setting combined with the
program-specific uplink information to provide the “best fit” for display of the
program material on the TV. This feature is primarily used in 16:9 and 14:9 (wide
screen) applications.
WSS Mode
Description: This is the Wide Screen Signalling output mode. It is used to select
how the receiver affects PAL WSS when it is present in the VBI.
Parameters: Auto, Suppress or Passthrough. The table below describes each of
the options. The default is Auto.
WSS Status
Description: This indicates the current value of PAL WSS in VBI line 23. If VBI
line 23 is not present, this field is blank. If PAL WSS is present on
VBI line 23, the receiver interprets the data and displays the
information in this field. In WSS Auto mode, this field indicates the
modified value received for aspect ratio conversion.
Parameters: Possible displayed status messages are: 4:3 f/f (full format), 14:9 L/
B (letter box) Centre, 14:9 L/B Top, 16:9 L/B Centre, 16:9 L/B Top,
16:9 L/B Centre, 14:9 F/F Centre, 16:9 f/f, Undefined value.
WSS Mode Description
Passthrough Passes WSS (unmodified, as received by the D9854
receiver) on VBI LIne 23 when present
Auto:Create Creates WSS to output the correct aspect ratio, when
performing aspect ratio conversion, otherwise it is
passed through.
Auto:Modify Modifies WSS to output the correct aspect ratio, when
performing aspect ratio conversion, otherwise it is
passed through.
Suppress Disables Line 23 VBI processing. WSS is not output on
line 23.
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