Grass Valley CR6400 Family v.1.2 - Manual (Page 37)

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CR6400
User’s Guide
Enhanced Mode (Hold and No-hold)
‘Takes’ are performed on all the levels specified by the destination.
In enhanced mode, level selection is applicable only to breakaway. Level selection governs the
selection of sources for the breakaway. All sources and destinations are always enabled.
Enhanced mode has 2 submodes:
• Hold mode — the level selection persists after the destination button is pressed (initiating a
take) and continues indefintely until the operator changes it. This allows an operator to try
different sources. To clear a breakaway, the operator starts a new normal take (non-break-
away) to that destination. See
Normal Takes on page 59.
• No-hold mode — a level selection reverts to the levels defined by the destination after the
operator presses a source button (completing a take). To clear a breakaway, either start a
new normal take to that destination or press a source without a level selection. See
Normal
Takes on page 59.
The choice between hold mode and no-hold mode is meant to accommodate operator or
administrator preferences.
Salvos
A “salvo” is a sequence of predefined (primitive or simple) takes. When you assign a salvo to a
button, an operator need only press that button to execute the entire take sequence.
Salvos do not:
• Execute source selections, destination selections, or level selection functions.
• Execute other salvos. (That is, salvos cannot be nested.)
• Contain loops or branches.
A simple take is expressed (in CRSC) as 3 values: level, input and output. These three values
uniquely define a single crosspoint in the set of routers and router partitions.
A salvo can include up to 64 primitive takes and a panel configuration can have up to 64 indi-
vidual salvo buttons, subject to a limit of 1024 primitive takes in total. (Thus, your panel could
have, for example, 64 salvos of 16 takes or 16 salvos of 64 takes.) Each panel can have a different
set of salvos.
Paging
Certain CR Series control panels can have buttons that control the presence or absence of sets of
sources and destinations that can be controlled by the panel. We call these sets of sources or
destinations “pages.”
The panels that have “paging” buttons are the CP6464 and CP32-6464. These are the panels that
can control networks that include CR6400 family routers. (The CP6401 also controls CR6400
family routers but does not have paging buttons.)
See Select a paging method. on page 32.