Cobalt Digital COMPASS 9284 3G_HD_SD-SDI 8X4 Video Routing Switch - Manual (Page 19)

9284-OM (V1.3) 9284 PRODUCT MANUAL 1-15
Introduction
9284 Functional Description
• Very old routers only supported the “X” command.
• Routers with pre-version-10 software supported all three commands, “Y”,
“V”, and “X”, but usually provided a DIP switch that could be set to force the
router to only send “X” commands.
• Routers with version 10 or later software use the setting of the “U”
command (described below) to determine whether to send only “X”
commands, or “Y”, “V”, and “X” commands.
A 6-level router using only “X” commands could generate as many as 6 “X”
commands of status output. The first command is for level 1, the next for
level 2, etc. until the last level is reached. (However, each “X” command
contains the level number, so the sequence in which the data is sent is not
really important.)
When a router is able to send “Y”, “V”, and “X” commands, a “Y” command
will typically be sent if the router has only one level, and may also be sent if
the output has all of its levels connected the same, although this is not
required and some routers may instead send a “V” command or a series of
“X” commands in that situation. A “V” command will be sent when an output
has different connections on different levels, which is a more compact
representation of the status than a series of “X” commands.
The length of a “Y” or “V” or “X” command depends on the size of the
particular router involved. Larger routers use longer numbers for inputs,
outputs, and levels.
A space character precedes each “Y” or “V” or “X” command (spaces should
be ignored by the command parser, however). Each command begins with the
command letter, a Y or V or X, followed by the output number and a comma
character. Following that, the “Y” command has the input number connected
to the output, the “V” command has L input numbers separated by commas
(
L =number of levels) in order by level number, and the “X” command has the
level number at which the input-output pair is connected.
The input number may be a dash ('-') if no connection exists (for routers that
are capable of having their inputs disconnected). The input number may be 0
if the output doesn't exist at that level in the router (or isn't mapped to a
physical output, in virtual-mapped routers), or if the connection is not known
by the controller, as may be the case for some control panels immediately
after they are powered up.
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 !!