Cobalt Digital COMPASS 9284 3G_HD_SD-SDI 8X4 Video Routing Switch - Manual (Page 17)

9284-OM (V1.3) 9284 PRODUCT MANUAL 1-13
Introduction
9284 Functional Description
Some routers can have different sized matrices on each level. However, the
“L” command always reports what is referred to as the “basic router size”.
This is the size of the largest levels in the router. For example, a 2-level router
with level 1 being 16x32 and level 2 being 32x16 would report a basic router
size of 32x32 in the “L” command. In these kinds of routers, it is not
considered an error to send a crosspoint command that specifies an all-levels
take using an input or output number that is beyond the range of some of the
levels, as long those numbers lie within the basic router size. Levels which are
smaller than the specified numbers will not be affected by such a take
command. On the other hand, it is an error to send a crosspoint command that
specifies a take on a specific level with an input or output number that is
beyond the range of that level. To find out the actual physical size of each
level, use the “G LEVEL_INFO” command.
Routers that do not support the “ G ” command or “ G LEVEL_INFO ”
subcommand always have the same-size crosspoint matrix on each level.
Some routers support virtual-to-physical mapping. These virtual-mapped
routers use the same virtual matrix size for each level, and it will be that size
that is reported in the “
L ” command for Nout and Nin. The physical
crosspoint matrices can still be different sizes, and the “ G LEVEL_INFO ”
command can be used to find out what these sizes are, but they are of less
importance in a virtual-mapped router, because take commands are specified
using virtual source and destination numbers rather than physical input and
output numbers.
“S”: Status Inquiry
The command “S” requests that matrix status information be returned to the
host. The status information is sent as a sequence of “Y” and/or “V” and/or
“X” commands. The order of the commands is not significant, and different
models of routers may send the status of their outputs 16 in different orders.
Each command string contains the output number and either a level number
or data for all levels, so the order in which the status data is sent is not really
important.
For example, the SVS Tahoe Series routers first send one or more commands
that give the status for all levels of output 1, then send commands giving
status for all levels of output 2, etc. Other routers may send commands in a
different order: first for all outputs of level 1, then for all outputs of level 2,
etc.
From Syntax Description
Host S Ask router to send source status of
all router outputs.
Router Y out,in or V out,in,in... or X out,in,lvl Status of all outputs connected on
one or more levels to the specified
input.