External synchronization in Logic Pro for Mac

When you first open Logic Pro for Mac, it is in Internal Sync (transmitter) mode. The control bar Sync button, if visible, is not activated.

When Logic Pro is receiving synchronization, the control bar Sync button is activated.

You can use the Sync button to turn external synchronization on or off at any time, without changing the selected synchronization source. This allows you to temporarily stop Logic Pro from receiving synchronization from an external device. This could prove useful, for example, if you need to quickly edit a MIDI region while the external synchronization source—tape machine, VTR, and so on—is still running.

You can use the Sync button shortcut menu to choose a synchronization source.

Note: The control bar Sync button is not displayed by default.

View the control bar Sync button

  1. In Logic Pro, Control-click the control bar, then choose Customize Control Bar from the shortcut menu.

  2. Select the Sync checkbox at the top of the Modes and Functions column, then click outside the menu to close it.

Synchronize Logic Pro

  • In Logic Pro, click the control bar Sync button to synchronize Logic Pro to the chosen synchronization source.

    Figure. Control bar Sync button.

Open Synchronization settings with the Sync button shortcut menu

  • In Logic Pro, Control-click the control bar Sync button to open a shortcut menu, then do one of the following:

    • Set the type of external synchronization (a synchronization source). Choose from:

      • Internal Sync

      • Ableton Link

      • SMPTE Sync (MTC)

      • Manual Sync (Tempo Interpreter)

      • Auto Sync In

    • Determine if MMC commands should or should not be transmitted when using the Logic Pro control bar buttons. MMC commands are used for remote control of MIDI-controlled tape machines. See MIDI Machine Control in Logic Pro.

    • Open the Synchronization settings. See General Synchronization settings in Logic Pro.

    • Open the tempo editors. See Logic Pro tempo overview.

View the frame rate of incoming MIDI Time Code

  • In Logic Pro, click the upper (MIDI In) section of the MIDI Activity display while receiving an external synchronization signal.

Download the guides:

Logic Pro User Guide: PDF

Logic Pro Instruments: PDF

Logic Pro Effects: PDF

Control Surfaces Support Guide: PDF

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