Avid Technology AirSpeed series, Installation And User Manual

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Connector Pinouts and Connections
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Supported Optional VDCP Commands
The following commands are implemented in Avid products for the VDCP protocol. Avid
supports all required VDCP commands, plus the following optional commands. In addition,
Avid supports fixed 8 and variable length IDs up to 31 characters.
The AirSpeed Multi Stream responds with an ACK upon successful completion of the
commands listed in the following table. In the event of a transmission error, the AirSpeed
Multi Stream responds with a NACK followed by a status byte.
Supported Optional VDCP Commands
Command Description
0x.0C - LOCAL DISABLE Not currently implemented. Server returns an ACK.
0x.0D - LOCAL ENABLE Not currently implemented. Server returns an ACK
0x.15 - DELETE PROTECT This command prevents an ID from being deleted by an ID DELETE
command. An UNPROTECT command must be used to enable
DELETE ID once the ID is protected. The PROTECT ID command
has no effect on the ID being played or copied.
0x.16 - DELETE
UNPROTECT This command is the opposite of Protect ID and allows the ID to be
deleted but does not delete the ID by itself. This command has no
effect on the ID being played or copied.
1x.04 - STILL/PAUSE The STILL command causes the currently playing ID to pause. The
last frame played prior to receiving the STILL command will continue
being displayed. The output port must be in PLAY, or in the CUED
1x.05 - STEP The STEP command causes the currently playing and paused ID in
STILL state or in a play state to advance to the next frame and STILL.
The output port must be in a PLAY, CUED, or STILL state or an error
will be logged. This is equivalent to JOG with +1 data.
1x.06 - CONTINUE The CONTINUE command causes the ID currently in the STILL state
or a PLAY STATE to exit that state and continue playing. The output
port must be in a PLAY, CUED, or STILL state or an error will be
logged.
1x.07 - JOG The JOG command causes the controlled device to move the specified
number of frames forward orbackward with respect to its current
position.
1x.08 - VARIABLE PLAY When the VARIABLE PLAY command is received the controlled
device will start running in accordance with the speed and direction
data defined in SEND DATA-1, SEND DATA-2, and SEND DATA-3.