Sierra Video VS User Manual download pdf (Page 31)

Tahoe Series 16

might return the following string:

** L64,3,32,VIDEO~AudioL~AudioR~~ OK !!<CR>

indicating that the router has 64 outputs, 3 levels, and 32 inputs, and the levels are

named "VIDEO", "AudioL", and "AudioR".

“O”: Output Status Inquiry

The command "O" requests that matrix status information for a single output be returned

to the host. The status information is sent as a “Y” command or a “V” command or as a

sequence of L “X” commands, where L=number of levels.

For example, the command:

**O5!!

to a 3-level router might have the following three commands as its response:

** X65,23,1 X5,-,2 X5,0,3 !!

Note the dash, indicating that on level 2, output 65 is not connected to an input. Also note

the 0, indicating that the connection on level 3 is either unknown or that output 65 doesn’t

exist or isn’t mapped on level 3.

Or, a 3-level router might have the following single command as its response:

** V65,23,-,0 !!

which has the same information as the three X commands in the previous example.

If the router has only one level, or if all levels are connected the same, the router might

instead use the Y command. For example:

** Y65,23 !!

“N”: Input Status Inquiry

The command "N" requests that matrix status information for a single input be returned to

the host. This command is only useful on those router levels that allow an input to be

connected to at most one output. The status information is sent as a “Y” command or a

sequence of L “X” commands, where L=number of levels that allow an input to be

connected to at most one output (each such level generates a single “X” command of

status). Thus, a 6-level router with three single-output-per input levels would generate 3

“X” commands of status command output. A router that has all of its levels as single-

output-per-input may return a single “Y” command instead of individual “X” commands if

all of the levels are connected to the same output. The “X” and “Y” commands are

formatted exactly as with the "O" command.

For example, the command:

**N4!!

to a router might have the following three commands as its response:

** X12,4,2 X-,4,3 X0,4,4 !!

giving the status of levels 2, 3, and 4 (level 1 presumably not being a single-output-per-

input level). Note that on level 3 the ë-ë (dash) indicates that the input is disconnected,

and on level 4 the 0 indicates that the connection to the input is either unknown or that

input does not exist or is not available on that level.

If the router has only one level, or if all levels are connected the same, it might instead

use the Y command. For example:

** Y12,4 !!

“S”: Status Inquiry

Use command S to request that status information be returned to the host. The status

information is sent as a string of L x O substrings, where L = number of levels and O =

number of outputs. Each level/output combination generates a single substring of status.

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Sierra Video VS User Manual Page 31

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