Sierra Video Yosemite - Manual (Page 86)

SIERRA VIDEO
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** 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. Thus, a 21-level 16
output router would generate 2x16 = 32 substrings of status command output. The length of each
substring depends on the size of the particular switcher involved. Larger switchers use bigger
numbers for inputs, outputs, and levels.
The first substring of status is for level 1 output 2, etc.; however, each substring contains the level
and output numbers, so the sequence in which the data is sent is not important). The first
characters of each substring are a space followed by “X”, then the output number, a comma
character, the input number connected to the output (or 0 if no connection exists), another
comma, and finally the level number at which the input-output pair is connected. For example, the
command:
**S!!
might have the following two substrings at the beginning of its response:
**x01, 12, 1 x02, 02, 1!!
This indicates that output 1 is connected to input 12 on level 1, and that output 2 is connected to
input 2 on level 1.
The number of digits used for each number is generally the maximum number of digits ever
required for that particular switcher. Thus, a switcher with between 10 and 99 inputs would use
two digits for the input number, and a switcher with less than 10 levels would use one digit for the
level number.
“C”: Clear Matrix
Use command “C” to request that the switcher matrix be cleared so that all outputs are
disconnected from inputs (in switchers where this is possible) or else all outputs at all levels have
input 1 as their source. This command can take several seconds to execute (depending on the
size of the switcher matrix). In order to help ensure that this command isn’t accidentally executed,
it requires four additional characters following the “C” character, to spell out the word “CLEAR” in
full. For example, the command:
**CLEAR!!
would clear the matrix and when finished — the following response would be generated:
**OK!!