Apple Logic Pro 9 - Manual (Page 1219)

• SMPTE Mode Refresh checkbox: Activates Refresh mode, where fresh time code is
generated, in sync with received time code. Refresh mode works with both VITC and
LTC (see below). You should always use Refresh mode whenever you need to copy an
LTC track, because you cannot directly copy LTC without a considerable loss of quality.
When copying entire multitrack tapes, you should patch all tracks directly, but refresh
the time code track via the Unitor8.
Note: You should only use Refresh mode if you are copying time code.
• SMPTE Type buttons: This is where you define the SMPTE format that you want to use.
• LTC: Longitudinal (also called Linear) Time Code is written to a tape track.
• VITC: Vertical Interval (or Vertically Integrated) Time Code is written invisibly to a
video tape.
• Off: No time code is written.
• Freewheel slider: You can set the freewheel time (in frames) for LTC and VITC. The
freewheel parameter affects the SMPTE reader, and specifies how long the synchronizer
continues transferring MTC to the sequencer, after time code ceases to be read.
Long freewheel times can maintain synchronization, even if there are dropouts in the
time code, but they also increase the reaction time of Logic Pro after the time code
master stops. In practice, you should set a value that is as large as necessary (for
sustained operation), and as small as possible (to reduce waiting times).
• TV Format pop-up menu: Allows you to define the television format for time code
burn-in.
• PAL: The video format used in Europe, South America, most Asian and African
countries, and Oceania. If you are working with video in SECAM format (used in
France and French-speaking nations in Africa), choose PAL.
• NTSC: The video format used in the USA, Central America, Japan, and Canada.
• VITC Line 1 and VITC Line 2 pop-up menus: VITC is written into two lines of the video
picture, which are normally invisible. The lines should not be adjacent, and are usually
situated between 12 and 20.
If the Scan option is enabled, the VITC lines are automatically recognized. You should
only enter the lines manually if there are problems with Scan mode.
Visible Timecode Display Settings
• Visible Timecode Display: Size pop-up menu: Allows you to set the size of the time code
counter window, which is burned into the video picture.
• Visible Timecode Display: Style pop-up menu: Allows you to set the style of the time
code counter window, which is burned into the video picture.
• Horizontal Position and Vertical Position sliders: Allows you to set the position of the
time code counter window, which is burned into the video picture.
1219 Chapter 43 Project Settings in Logic Pro