Welcome Guest! To enable all features please Login or Register.



Go to last post Go to first unread
#1 Posted : Tuesday, March 28, 2017 7:17:06 PM(UTC)

Rank: Member

Groups: Member
Joined: 12/13/2016(UTC)
Posts: 30
United States
Location: PA

Thanks: 2 times
Was thanked: 1 time(s) in 1 post(s)
I'm supplying 5.25VDC to the Vd pin of the output header of my Cronus, and I see approximately 5V master clock signal output (very nicely shaped).

My question: is the 5V master clock signal normal (I sort of expected that the output buffers will be fed from a local 3.3V regulator, and expected a 3V signal) or the regulator feeding the output buffers is not doing its job and my board is going to die at any moment now?

Thank you.


Edit: A strange thing has happened: I didn't change anything, but at some point it went to the expected 3.2V (and the rise time went from 3 ns to about 5 ns)... The waveform is about the same. Strange, but I can live with that.

Edited by user Wednesday, March 29, 2017 2:14:53 AM(UTC)  | Reason: Not specified

Russ White  
#2 Posted : Wednesday, March 29, 2017 6:13:28 PM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
~3.2V is normal - 5V would never be normal - it would mean that the VREG was not regulating or shorted etc..
thanks 1 user thanked Russ White for this useful post.
akras on 3/29/2017(UTC)
Rss Feed  Atom Feed
Users browsing this topic
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.