How to sync Zoom F8 to Tentacle or sync Tentacle to Zoom F8

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Hi – please can you advise (A) how to sync the Zoom F8 to a TentacleSync Tentacle and (B) how to sync a TentacleSync Tentacle to the Zoom F8.  Tried every setting and failed.  For example, when starting Tentacle in Red-Mode and connecting it to the recorder’s Time Code Out BNC, the Tentacle’s light starts to flash red in a steady rhythm, but never changes to green to indicate that it has synced and switched to Green-Mode.  I have tried setting the F8 to Internal free run mode for that and have tried setting it to External mode in order to try to sync it to a Tentacle.  Luck with any of those attempts.

Please help.



Hi Alex,

We also have a Zoom F8 and we don’t have that issues you are describing.

For feeding Tentacle by the F8 please check following settings:

  • frame rates must be the same!
  • Set F8 (Mode:) to Int Free/RTC Run

Which adapter cable (3.5mm<>BNC) do you use?

For feeding your F8 by Tentacle:

  • frame rates must be the same!
  • Set F8 (Mode:) to Ext and Ext Continous: On

Now you should see the the Ext TC at TIMECODE Menu.

I hope it helps.

For faster and direct support please write us to:

Best, Max


Thank you!  The issue was the F8’s frame rates not being properly set.  Once properly set, it all worked fine.




I’ve had a “problem” when using my F8 and tentacle where it appears they are one frame apart. Not sure if this is actually an issue or just the display??


Important to note! As a newbie I realized for the sync to work with my F8 Tentacle needs to be set at line level.


Jose, you’re a lifesaver.  I tried for hours to get my Zoom F4 to read Ext timecode sync from my Tentacle.

Then when I went back into the setup on my iPhone and changed the level from MIC to LINE it worked fine.

So again for anyone else’s benefit –

Tentacle Sync as timecode source for ZOOM F4:

  1.  Set TSync module to LINE level.
  2.  Ensure correct jack to BNC cable
  3. Follow steps in Zoom F4 user manual on how to setup EXT timecode sync.
  4. Voila’ you’re in business.

When the Zoom F8 and Tentacle Sync are setup there is no audio timecode recorded.  They are indeed in sync, but without that audio timecode recorded onto an audio track Tentacle Sync Studio has no way of syncing the files.  How is this accomplished?


The TC is written as metadata. It’s more common for programs to read TC this way than as audio TC.