Specifications

Chapter 4: Using SYNC Peripherals 49
Compensating for Timecode
Offsets
You can offset the display of incoming timecode
in the Pro Tools application. This is useful when
you want to adjust the display of timecode to
match the start time of the session (such as with
source material that starts at a different time),
or compensate for source material that is consis-
tently offset by a fixed number of frames (such
as with some color–corrected video masters).
Pro Tools provides five different types of Exter-
nal Timecode Offset settings. These offsets in-
clude:
• MMC (MIDI Machine Control)
•9-Pin (Deck Control)
• Synchronization peripherals such as the
SYNC HD, SYNC I/O, or other peripherals
(such as MIDI interfaces that provide MIDI
Timecode).
• Sample Offset
Unique values can be defined for each of these
types of offsets, or you can link MMC, 9-Pin,
Sync, and Satellite to adjust in unison.
Positive and negative offset values can be en-
tered to offset Pro Tools timecode display later
or earlier, respectively.
Offsets and SYNC Peripheral Timecode Display
The SYNC peripheral front panel display contin-
ues to display actual incoming timecode, re-
gardless of any External Timecode Offsets set-
tings that are applied in Pro Tools.
To apply an offset to an external timecode source:
 In the External Timecode Offsets section of the
Session Setup window, enter a time in an offset
field.
To apply the same offset to external MMC, 9-Pin,
Sync, and Satellite timecode sources:
 In the Session Setup window, select Link to ap-
ply the same offset value to all devices.
Generating & Regenerating
Timecode
SYNC peripherals can generate LTC, VITC, and
MTC simultaneously, obtaining time addresses
from a variety of sources:
 When the Positional Reference is LTC, VITC,
or Bi-Phase, the SYNC peripheral generates LTC,
VITC, and MTC simultaneously, based on the
time address of one of those sources.
 When the Positional Reference is Serial Time-
code, you can set the SYNC peripheral to gener-
ate LTC.
Read/Regeneration Mode
In this mode, the SYNC peripheral regenerates
timecode based on external positional reference
information (LTC or VITC timecode, or a Bi-
Phase/Tach signal). Subject to certain condi-
tions, three types of timecode (LTC, VITC, and
MTC) are simultaneously regenerated from the
selected positional reference.
Timecode generated by SYNC peripherals
does not follow session Pull Up and Pull
Down settings.