DE1285 Caption Decoder/VANC Monitor
Alarm Name
Description
Unknown Packet
Sets an alarm to go off when a packet can-
not be recognized by the DE1285 as a known
type.
AFD on Multiple Lines
Sets an alarm that goes off when there is
more than one AFD packet in a single video
field.
No Video
Sets an alarm that goes off when there is no
video signal or the video cannot be displayed.
Invalid V-Chip Rating
Sets an alarm that goes off when the V-Chip
rating is not present or is not valid.
No Captions
Sets an alarm that goes off when there is no
6101 VANC packet present.
There are five alarms in the Caption Pair Alarms category that can be
used to detect when certain combinations of caption channels are active.
For each selected alarm, the two channels are checked over a 10 second
period for data presence. If data is present in one channel but not the
other, the alarm goes off.
Alarm Name
Description
CC1 && S1
Sets an alarm that goes off when there is a
mismatch between the presence of primary lan-
guage SD captions and HD/3G captions.
CC3 && S2
Sets an alarm that goes off when there is a mis-
match between the presence of secondary lan-
guage SD captions and HD/3G captions.
CC2 && S2
Sets an alarm that goes off when there is a mis-
match between the presence of secondary lan-
guage SD captions and HD/3G captions.
CC1 && CC3
Sets an alarm that goes off when there is a mis-
match between the presence of primary and sec-
ondary language SD captioning.
S1 && S2
Sets an alarm that goes off when there is a mis-
match between the presence of primary and sec-
ondary language HD/3G captioning.
20
