User Manual

Chapter 57: Working with Synchronization 1283
9 Select one of the following:
•
Gen MTC to generate MIDI Timecode.
•
Gen LTC to generate Linear Timecode.
10 Start playback.
Pro Tools generates and outputs timecode from the
SYNC HD.
Limitations for SYNC HD Locked
to Video Input or Video
Reference
A SYNC HD can generate timecode at any frame
rate when locked to Video Reference or Video In,
regardless of the frame rate of the incoming video
reference signal. However, if you choose to gener-
ate timecode using a frame rate which does not
match that of the video signal, the frame edges in
the Pro Tools session (and the frame edges of the
timecode you are generating) will not be aligned
with the video frame edges.
Using MIDI Machine Control
Pro Tools provides the capability to transmit loca-
tion information to external devices and to control
their transports using MIDI Machine Control
(MMC).
Controlling External Devices
Using MMC
Any device that supports MMC can be controlled
directly from within Pro Tools, with either the de-
vice or Pro Tools acting as clock master.
The external devices supported by Pro Tools im-
plement “open loop” communications only. Be-
cause of this, while Pro Tools is the Transport
Master, any direct operation of the receiving de-
vice’s transport will not be communicated back to
Pro Tools. Instead, you can use the Transport pop-
up to select the external device (MMC in the pop-
up) and use the Pro Tools on-screen transport con-
trols to drive the device.
Pro Tools does not support remote track arming of
MMC-controlled external devices. You need to
manually arm tracks for recording on the external
device.
Transport window, Synchronization options shown
Press Command+Control+J (Mac) or
Control+Start+J (Windows) to enable
(or disable) Generate LTC (GEN LTC).
If you change timecode rates in the middle of
a session, many SMPTE-to-MIDI Timecode
converters need to be turned off and turned
on again to recognize the new frame rate.
Pro Tools | Ultimate with MachineControl
option supports remote track arming for
Sony 9-pin and V-LAN enabled devices.
See “Remote Track Arming” on page 1287.