SIERRA VIDEO SYSTEMS
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** Y1,18 !!<CR>
** Y8,34 !!<CR>
On the other hand, if U2 is in effect, the response to the original crosspoint change command
sequence will be:
** Y1,18 Y8,34 OK !!<CR>
and no additional crosspoint change reports will be sent because they already HAVE been sent.
The U2 mode of operation is generally more convenient because it produces more immediate
feedback to the controlling device that is sending a crosspoint change command. The U1 mode of
operation is provided for compatibility with older control systems.
“V”: Connect Levels
The command "
V
" is used to request that a connection be made. It must be followed by an output
number, a comma, and a comma-separated list of input numbers, one for each level, up to the
number of levels in the router. Fewer than the number of levels may be specified if desired, and
the remaining levels will be left unchanged.
For example, the command:
**V12,7,8,9!!
says that connections are to be made to output 12: from input 7 on level 1, input 8 on level 2, and
input 9 on level 3.
An input number of 0 means the output connection is to be left
unchanged
.
An input number of ë-ë (dash) means the output is to be
disconnected
. If the router does not
support disconnected outputs, the output connection will be left unchanged.
“W”: Connect Outputs
The command "
W
" is used to request that a connection be made. It must be followed by a level
number, a comma, and a comma-separated list of input numbers, one for each output, up to the
number of outputs in the router. Fewer than the number of outputs may be specified if desired,
and the remaining outputs will be left unchanged.
For example, the command:
**W1,17,3,9!!
says that connections are to be made on level 1: from input 17 to output 1, input 3 to output 2,
and input 9 to output 3.
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:
**W0,8,3,7!!
says that connections are to be made on all levels: from input 8 to output 1, input 3 to output 2,
and input 7 to output 3.
An input number of 0 means the output connection is to be left
unchanged
.
An input number of ë-ë (dash) means the output is to be
disconnected
. If the router does not
support disconnected outputs, the output connection will be left unchanged.
It is an error to request connection of an input or output that doesn’t exist on the specified level,
even if the input or output does exist on some other level. However, if the level number is “0”, any
input or output may be used as long as it exists on at least one level, and in that case no
connection will be made on any level on which the input and output does not exist. 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 outputs. The response will be the same as if “O”
commands were issued for the outputs immediately following the “W” command. No response is
generated if this command is being used to define a salvo.
