Topic: ASIO Positioning Protocol - External Sync Nuendo 13 - Bug?

I am using Nuendo 13 with external timecode sync to "ASIO audio device" that is the RME 9652.

https://gearspace.com/board/attachments/music-computers/1123328d1722798132-asio-positioning-protocol-external-sync-nuendo-13-bug-ext_sync_dialog.jpg

When I have the buffer size set to 1024 the transport in Nuendo is stable.

However when I lower the buffer size, there is eratic behavior of the transport.  It is glitching back and forth in between 1 second intervals in the timeline.

https://gearspace.com/board/attachments/music-computers/1123329d1722798132t-asio-positioning-protocol-external-sync-nuendo-13-bug-rme_driver_settings.jpg

Is this a Nuendo bug or a hardware issue?

Video screen capture posted on Youtube:


https://youtu.be/YpYQMuJ7i4o

Re: ASIO Positioning Protocol - External Sync Nuendo 13 - Bug?

Timecode Source : try internal Timecode

M1-Sequoia, Madiface Pro, Digiface USB, Babyface silver and blue

3

Re: ASIO Positioning Protocol - External Sync Nuendo 13 - Bug?

IMHO the hardware expects a simultaneous ADAT input signal that is synchronous to the Time Code, means has the matching sample rate. Maybe I am wrong but that was the typical use case, and might be even more important with a DAW.

Regards
Matthias Carstens
RME

Re: ASIO Positioning Protocol - External Sync Nuendo 13 - Bug?

waedi wrote:

Timecode Source : try internal Timecode

Yes, it works fine like that.  Doesn't answer the question though, does it?

Re: ASIO Positioning Protocol - External Sync Nuendo 13 - Bug?

MC wrote:

IMHO the hardware expects a simultaneous ADAT input signal that is synchronous to the Time Code, means has the matching sample rate...

Yes, this makes sense.  In this case the sample rate is indeed set to ADAT sync which is coming from the same source.

But, if that was the problem why would changing the buffer setting have this effect?

It almost seems like the buffer is choking on the incoming timecode signal.  However I can run audio down to 32 samples buffer size without hiccups.