
Appendix G – Machine Control
Page 69
Additional Machine Control options
Sony/LTC
Uses LTC as the positional reference for a Sony 9-pin controlled Master machine instead of the data reported via the 9-
Pin link. Used primarily for the control of DAWs that have problems reporting position via a serial interface, or for setting
up a system where all slave machines chase LTC from the designated master machine. Supports the same tracking arming
and record capabilities as Sony 9-Pin and the same MMC option as the LTC Slave option.
Sony Slave
The port emulates a device operating under Sony 9-pin control. Two modes of operation are possible:
• The controlling device outputs basic transport commands and locks to the desk position returned from the Sony
Slave port.
• The controlling device synchronises the desk position to its own internal timeline.
The first mode is suitable for DAWs that have a 9-pin port capable of controlling a machine (as opposed to emulating a 9-
pin machine) and provides advantages in parallel control but loses the ability to track arm the DAW. This mode supports
additional Sony 9-pin machines on the remaining serial ports as well as a DCTM or a Sony/LTC master, as long as all the
machines are set for synchronous operation.
Serial slave machines will not follow transport commands originated on the Master machine in this mode.
The second mode can be used to interface the desk to an external machine controller.
VPR3
Alternative RS422 9-pin control protocol used primarily with the legacy Timeline Lynx I/II synchronisers for parallel and
bi-phase machine control. Also supports the JSK bi-phase controller. Only serial Port 4 supports VPR3 control of a single
device. The connected device can be a master or slave.
DCTM
Parallel control of a tape machine or flim dubber using the five basic transport commands. Position is derived from
timecode at play speed and via a tach pulse and direction tally in wind.
Timecode Generator
The C300 can generate video-referenced longitudinal (LTC), and MIDI (MTC) timecode, locked to the desk position in all
synchronous serial machine control modes and when receiving video-locked timecode from a controlled device. The
timecode output is not video referenced when regenerating code received from machines under asynchronous control,
or not locked to the same reference as the C300 processor. With a synchronous master, the desk timecode output can be
used as a master reference for external machines with built-in timecode chase synchronisers. All common timecode frame
rates are supported (23.976, 24, 25, 29.97 DF and NDF, 30) provided the system is locked to the correct SD or HD video
reference.
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