GRASS VALLEY 8995DNC -, Инструкция по эксплуатации

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118 8995UPC/DNC/UDX — Instruction Manual
Active Format Description
AFD Tables
The SMPTE 2016-1:2009 and 2016-3:2009 AFD code standards for 4:3 and
16:9 aspect ratio definitions corresponding to the binary codes are illus-
trated in the following tables:
• AFD Codes in 4:3 Coded Frames ( Table 14 on page 123 )
• AFD Codes in 16:9 Coded Frames ( Table 15 on page 125 )
The following tables in this section are provided to give the supported
aspect ratio conversions based on the AFD coded input for all modes and
alignment settings for both up and down conversion.
Up Conversion (4:3 to 16:9):
• Mode = Full Width ( Table 16 on page 127 )
• Mode = 14x9 SP ( Table 17 on page 128 )
• Mode = Full Height ( Table 18 on page 129 )
• Mode = Anamorphic ( Table 19 on page 130 )
• Mode = Auto ( Table 20 on page 131
Down Conversion (16:9 to 4:3):
• Mode = Full Width ( Table 21 on page 132 )
• Mode = 14x9 SP ( Table 22 on page 133 )
• Mode = Full Height ( Table 23 on page 134 )
• Mode = Anamorphic ( Table 24 on page 135 )
• Mode = Auto ( Table 25 on page 136
Notes on AFD
The 8995 module AFD software programming in
Auto
mode attempts to
maximize and preserve the height of an output image while attempting to
maintain as much vertical information as possible.
AFD processing can be disabled by selecting the
Disable
radio button in the
AFD Control section on the Aspect Ratio web page ( Figure 66 on page 120 ).
When AFD is present but disabled, the module will act as if there is no AFD
present. The status reporting of the current AFD will be bypassed.
If the output SDI standard is different than the input SDI, the output AFD
is normally inserted at the same line offset from the switching line where it
is located in the input SDI.
If the output offset turns out to be too large, AFD data is inserted 4 lines
after the switching line. When there is a video freeze, AFD is not inserted.