Sierra Video Ponderosa 3G Series Routing Switcher - Manual (Page 97)

PONDEROSA
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“O” commands were issued for the outputs immediately following the “Z” command. No
response is generated if this command is being used to define a salvo.
“D”: Delay vertical sync intervals
The command "D" is used to delay before continuing execution of the commands that
follow. It must be followed by a number giving the number of vertical sync intervals by
which to delay. If the number is 1, the delay will be to the VERY NEXT vertical sync
interval. If the number is 0, no delay occurs. The number must be no larger than 255.
Note that this command will also delay the time at which the remaining command
responses and the trailer character are returned to the host.
For example, the command:
** Y1,5 D200 D100 Y1,6 S !!
says that input 5 is to be connected to output 1 on all levels, then a delay of 300
(=200+100) sync intervals is to occur, then input 6 is to be connected to output 1 on all
levels, then a status response is to be returned.
It is generally recommended that the host computer be responsible for timing the initiation
of commands, rather than using this command to do the job. The host computer can
simply send the appropriate commands at the appropriate times. The "P" and "T"
commands described below can aid in ensuring that lengthy connect sequences aren't
delayed due to the time it takes to send them to the router.
“T”: Trigger a Salvo
The command "T" is used to trigger a previously set up salvo (set using the "P" command
above). It must be followed by a register letter from A to Z or a register number from 1 to
256 giving the register to be triggered.
For example, the command:
** TB D180 TC !!
says to trigger salvo register B (same as 2), delay 180 sync intervals, then trigger salvo
register C (same as 3). When the register is triggered, this means that the connect
commands stored in it take effect.
If a salvo is triggered and it attempts to connect a locked output or port, or a disallowed
input/output pair, or a port to itself, the salvo trigger operation is aborted, no crosspoint
changes are performed, and an error is reported: “ERROR Salvo Has Locked Xpts”.
“P”: Preset a Salvo
The command "P" is used to set up a salvo, which is a series of connect commands for
later execution with the "T" command. It must be followed by a register letter from A to Z
or a register number from 1 to 256 giving the register into which the connect sequence is
to be stored, followed by zero or more connect commands (V, W, X, Y, or Z), followed by
a "~" (tilde) character.
Registers A-Z are the same registers as 1-26. The letter designators are allowed to
shorten up the command sequence slightly, so that “T” commands can be sent in
compact form if one of the first 26 registers is used.
For example, the command:
** PB X2,5,0 Z7 ~ !!