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More => Old Versions => Media Center 17 => Topic started by: mark_h on December 28, 2011, 02:14:07 am

Title: OT: Asynchronous USB
Post by: mark_h on December 28, 2011, 02:14:07 am

I have an async USB DAC.  Does anybody know of any Windows tools that can confirm whether the USB connection is genuinely running in ASYNC mode when connected?

Cheers,

Mark

Title: Re: OT: Asynchronous USB
Post by: jimmy neutron on December 28, 2011, 03:12:47 am

Check DEVICE MANAGER.

Title: Re: OT: Asynchronous USB
Post by: mark_h on December 28, 2011, 03:24:40 am

How do I use Device Manager to confirm Async mode?

Title: Re: OT: Asynchronous USB
Post by: Vincent Kars on December 28, 2011, 06:36:47 am

Try Thesycon USB Descriptor Dumper
It gives a description of all the flags including adaptive/async, sample rates supported, etc
http://thewelltemperedcomputer.com/SW/AudioTools/TroubleShooting.htm

Title: Re: OT: Asynchronous USB
Post by: mark_h on December 28, 2011, 06:40:44 am

Thanks, Vincent - that's perfect!  Great site you've set up there.

Mark

Title: Re: OT: Asynchronous USB
Post by: mojave on December 29, 2011, 09:49:19 am

Vincent, thanks for posting about the Thesycon USB Descriptor Dumper. I just check my new Steinberg UR824 last night and it uses asynchronous syncronization. I thought it did, but wanted to confirm. The UR824 uses the same clocking method (DICE 2 digital input chip with JET Jitter Elimination by TC Electronic) as the new Mytek 192 stereo which is also asynchronous.

Title: Re: OT: Asynchronous USB
Post by: Vincent Kars on December 29, 2011, 11:55:05 am

Always good to check as the specs are often unclear.
Asynchronous DAC might imply a USB with asynchronous synchronization but might also be used for a DAC with asynchronous sample rate conversion.