Sierra Video Ponderosa 3G Series Routing Switcher - Manual (Page 90)

SIERRA VIDEO
84
“L”: Matrix Size and Level Names Inquiry
The command "L" requests that matrix size (Nout, Nlvl, Nin) and level name information
(lvl1, lvl2, etc.) be returned to the host. The information is sent as a string of characters.
The first characters are a space followed by "L", some optional values described below,
then the number of outputs (Nout), a comma, the number of levels (Nlvl), a comma, the
number of inputs (Nin), a comma, and then the level names, each terminated by a "~"
(tilde), and the last followed by two tildes.
For example, the command:
**L!!
might return the following string:
** L64,3,32,VIDEO~AudioL~AudioR~~ OK !!
indicating that the router has 64 outputs, 3 levels, and 32 inputs, and the levels are
named "VIDEO", "Audio L", and "Audio R".
“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 !!