Sierra Video RTR-804 - Manual (Page 26)

SIERRA VIDEO
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Unless otherwise noted in the documentation for a specific switcher, it can be assumed that the
switcher software guarantees to send all level changes associated with the "V" command's output
to the crosspoint matrix within the SAME vertical interval.
If the requested connection has an output number that does not exist on one or more levels,
those levels are simply not changed. It is an error to request connection of an input that doesn't
exist on that level, even if the input does exist on some other level. If the requested connection
has an output or input number that isn't mapped to a physical connector (on virtual-mapped
routers) on one or more levels, those levels are simply not changed.
If "U2" is in effect (see "U" command), the response will include one or more V, Y, or X
commands to report the new status of the output. The response will be the same as if an "O"
command were issued for the output immediately following the "V" command. No response is
generated if this command is being used to define a salvo.
"X": Connect Crosspoint
From Syntax Description
Host X out,in,lvl Make a connection to an output on a level.
Router
(None or V/Y/X command, depending on
which "U" command argument is in effect,
see "U" command description.)
Optional status response.
The command "X" is used to request that a connection be made. It must be followed by an output
number, a comma, an input number, a comma, and a level number.
For example, the command:
**X24,13,2!!
says that a connection is to be made between output 24 and input 13 on level 2. If the level
number is specified as "0", this means that the connection is to be made on all levels (AFV).
For example, the command:
**X8,3,0!!
says that a connection is to be made between output 8 and input 3 on all levels.
An input number of 0 means the output connection is to be left unchanged, not very useful in an
"X" command.
An input number of '-' (dash) means the output is to be disconnected. If the router does not
support disconnected outputs, the output connection will be left unchanged.
When a level number of 0 is used with the "X" command, it can be assumed that the switcher
software guarantees to send all level changes for the output to the crosspoint matrix within the
SAME vertical interval, unless otherwise noted in the documentation for a specific switcher.
It is an error to request connection of an input or output that doesn't exist on the specified level,
even if it does exist on some other level. However, if the level number is "0", any input or output
number may be specified as long as it exists on at least one level, and in that case no connection