Sierra Video Viper Component Series, User Manual

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SIERRA VIDEO
68
“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!!<CR>
“K”: Set Password
The command "
K
" is followed by a password, which may be 0 to
cancel
the previous
password, thus causing no password to be specified, or, it may be a value between 1 and
9999 to supply a password, which remains in effect until another password (or password
0) is supplied in another “K” command. The password is stored by the router under the
remote address specified using an “M” command, or under the
control portís
remote
address if an “M” command was not specified before the “K” command in the same
command string as the “K” command. The password that is set remains in effect until
another “K” command is received from the same remote address.
It would be used to establish a password for a remote address, to be used for such things
as locking and unlocking outputs and modifying the router configuration. When the router
receives a protected command (one which requires use of a password) from a remote
address, it compares the current password for that remote address with the password
required to execute the protected command. Protected commands consist of many of the
“G” commands that change router configuration, as well as
take
and
salvo trigger
commands when the output to be taken is locked. In the former case, the administrator
password is the one that must be sent in the “K” command to permit the router
configuration to be changed, while in the latter case the password that was used to lock
the output is the one that must be sent in the “K” command to permit the
take
to occur.
Refer to the “B” command and the “G ADMIN_PASSWORD” command (in a separate
document) for more information.
For example, the command:
** M197 K1777 !!
requests that password 1777 be stored as the current password for remote address 197.
The command:
** M197 Y7,9 !!
requests that output 7 be connected to input 9, using the password stored for remote
address 197 as the output lockout override password. The
take
will succeed if output 9 is
either not locked or is locked with password 1777. Otherwise, the
take
will fail.