Re: [casper] Interesting memo on digitizers and data transmission

2009-10-18 Thread John Ford
> > hi john, > > regarding the recent NRAO memo on word boundry detection > (in your link below): > > i think the early ATA engineers tested prototype hardware > that didn't use 8/10 encoding in high speed serial links. > (since the data is noise like, one shouldn't need two > extra bits to insure

Re: [casper] Interesting memo on digitizers and data transmission

2009-10-18 Thread Dan Werthimer
hi john, regarding the recent NRAO memo on word boundry detection (in your link below): i think the early ATA engineers tested prototype hardware that didn't use 8/10 encoding in high speed serial links. (since the data is noise like, one shouldn't need two extra bits to insure sufficient trans

[casper] Interesting memo on digitizers and data transmission

2009-10-17 Thread John Ford
Thought this might be of interest: New Electronics Division Technical Note EDTN No. 213 Title: Word-Boundary Detection in a Serialized, Gaussian-Distributed, White-Noise Data Stream Authors: Matt Morgan, Rick Fisher Date: October 13, 2009 http://www.gb.nrao.edu/electronics/edtn/i