Home Digital Drive

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

RE: Impedance mismatch

Your DAC interface receiver is momentarily losing lock - best interface jitter tolerance is obtained with a long time constant which means you can lose data with burst interruptions.

If you are able to run an optical link between your PC and the DAC, then you can determine if the issue is conducted or radiated EMI. An optical link will eliminate the electrical interaction between DAC and PC.

Impedance mismatch would result in increased interface jitter which may increase the likelihood of the DAC losing Lock, but since you say that the dropouts only occur when you switch a dimmer, this would suggest a vulnerability to EMI. Most likely this is through the power supply. This may either be coupled through from your PC which may corrupt the transmitted data through the USB adapter, or through the DAC power supply (or both!).

Do you know if the USB adapter is galvanically isolated (i.e transformer coupled)?


Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats


This post is made possible by the generous support of people like you and our sponsors:
  Schiit Audio  


Follow Ups Full Thread
Follow Ups

FAQ

Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.