Grass Valley 8995DNC v.1.3.0 User Manual
Page 74
74
8995UPC/DNC/UDX — Instruction Manual
Configuration
AFD (Active Format Description) Reporting
When AFD is present, status reporting for the presence of AFD information
is provided for the SDI input and SDI output as shown in
For the AFD Input Status, the following read-only information is provided:
•
AFD Input Status
– reports if AFD data is
Present
or
Not Present
.
•
AFD Input Line
– reports the line number where input AFD data has been
detected.
•
Input Aspect Ratio
– reports the aspect ratio of the input signal coded
frame (
4:3
or
16:9
).
•
AFD Input Code
– reports the 4-bit AFD code of the input signal. The defi-
nition of each 4-bit AFD code is defined in the SMPTE 2016-1:2009,
2016-3:2009 standard.
For the AFD Output Status, the following read-only information is pro-
vided:
•
AFD Output Status
– reports if AFD data is
Present
or
Not Present
in the
output signal.
•
AFD Output Line
– the AFD input line offset from the current input stan-
dard switching line is computed and added to the current output stan-
dard switching line to get the AFD Output Line number. If this line
number exceeds the VBI, the the AFD Output line is set to the default
value with is the switching line plus four lines according to the AFD
SMPTE standard.
•
Output Aspect Ratio
– reports the aspect ratio of the input signal coded
frame (
4:3
or
16:9
).
•
AFD Output Code
– reports the 4-bit AFD code of the output signal. The
resulting AFD Output Code is determined by the module software
according to specific software programming to meet the SMPTE AFD
requirements.
Refer to the Appendix,
Active Format Description on page 117
, for detailed
information on SMPTE AFD code definitions and requirements and how to
use the aspect ratio controls with signals containing AFD information.