Author Topic: They're talking about jitter......................  (Read 6698 times)

MystereoN

  • Sr. Member
  • ****
  • The Brave die once, a coward dies a thousand times
    • View Profile
Never argue with a fool,
they will drag you down to their level,
then beat you with their experience!!!

Gen. Dreedle

  • Commander, Alabama wing, Confederate Air Farce
  • Global Moderator
  • Hero Member
  • *****
    • View Profile
Re: They're talking about jitter......................
« Reply #46 on: January 26, 2017, 10:24:40 AM »
Not too long ago, we made some measurements of old Toshiba TOSLINKs vs the crappy brand that you can buy at Mouser. Since the folks we did this for prefer to keep it private, I can not share it.

Let's just say they get worse as speed increases. The HS version is better than the regular version. Main conclusion is the RX have crappy, noisy (Chinese) transistors, and the TX LEDs are just ok.

All have a high noise floor. Which may or may not be important. Since SPDIF already has a high noise floor....................

The difference is the TOSLINKs have just plain ol' noise, and the SPDIF has correlated noise.

The only reason why SPDIF sounds ok is that nothing that you do affects the phase noise below 10 Hz or so. Eventually, the noise floor intersects the source phase noise, and that is that.

End of story.

No more help or clues.

Screw you guys.........................!
"Major Danby, sir."
"Danby. D-A-N-B-Y."
"Take him out and shoot him."
"Sir?"
"I said take him out and shoot him. Can't you hear?"

MystereoN

  • Sr. Member
  • ****
  • The Brave die once, a coward dies a thousand times
    • View Profile
Re: They're talking about jitter......................
« Reply #47 on: June 19, 2017, 11:29:29 AM »
Somebody is famous at DiyA  ;D

Never argue with a fool,
they will drag you down to their level,
then beat you with their experience!!!