Grass Valley NV8500 Series v.3.5 - Manual (Page 97)

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NV8500 Series
User’s Guide
 Embedders on disembedder/embedder output cards are always on.
Tally
There are two forms of tally: “effective” status and actual status.
“Effective status” applies to standard input cards. Audio sources from standard input cards are
tallied as if they were from a disembedding input card.
“Actual status” applies to disembedder cards or MADI input cards. Here, audio tally consists of
actual audio sources.
Understanding How the Rules Combine
The rules are complex and mutually contradictory. The easiest way to understand how the rules
work is to follow the algorithm that implements the rules. The algorithm to determine whether
to bypass the embedder is portrayed in simple terms here.
IF video matrix take
Set video source
IF level is AFV // ’AFV level’ is an obsolete feature
Flag = TRUE // Flag referenced at end of procedure
ELSE -- not AFV level
IF input is ‘force embedder on’
Flag = FALSE
ELSE
IF standard or MADI input to EMB output
Flag = TRUE
ELSE
Flag = FALSE
ENDIF
ENDIF -- force embedder
ENDIF -- AFV level
ELSE -- audio matrix take
IF null audio source // do "embedder group control"
IF MADI destination
Return "Invalid Destination" // no nulls to MADI output
ELSE
Set audio source
Set ’Insert Silence’ flag
Flag = TRUE
ENDIF
ELSE -- regular audio source
IF standard input
Return "Invalid Source" // can’t route audio from std source
ELSE
IF standard or "!EM" output // !EM a special output card
Return "Invalid Destination" // can’t route audio to such dests
ELSE
Set audio source
Clear ’Insert Silence’ flag
IF DIS or MADI input to EMB or MADI output
Flag = FALSE
ELSE
Flag = TRUE
ENDIF
ENDIF -- valid dest
ENDIF -- valid source
ENDIF -- null or not
ENDIF video or audio
IF Flag
bypass embedder and tally effective status