Hi Bent,
 
The 240kHz was picked up by Mike in his original proposal for the 1/JTF mask. It was the same limit as what we would have by extending the SAS-1.1 mask to 6G and it also gave an SJ amplitude that seemed to be in the within the SJ generation capabilities of BERT testers.
 
What is your take on the feasibility of setting a 97kHz limit for the SJ mask, with an associated SJ amplitude of 45.3UI? Will most test equipment meet this SJ generation requirement?
 
Thanks,
 
Guillaume

From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Bent Hessen-Schmidt
Sent: Thursday, June 12, 2008 12:31 AM
To: Alvin.Cox@seagate.com; t10@t10.org
Subject: RE: Reminder, SAS PHY WG call, June 12, 10:00am CDT

Hi Alvin, Guilllaume and fellow SAS workgroup members,

 

I am unable to join the call tomorrow morning, but like to submit the following comments:

 

I like Guillaume’s presentation on inverse JTF. I suggest picking values for 270 kHz instead of 240 kHz on slides 10, 21 and 22 as 240 kHz is an even harmonic and the SSC waveform generally have more energy at odd harmonics. This will also have the points on the line spaced more evenly. Further there is indeed test equipment available which include all of the 3 functions at the far left of slide 16 in one instrument plus programmable de-emphasis as an additional option (several of the other member on the call already have this equipment).

 

Sincerely,

 

Bent Hessen-Schmidt

SyntheSys Research, Inc.

3475-D Edison Way

Menlo Park, CA 94025

(650) 364-1853

www.BERTScope.com

 

From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Alvin.Cox@seagate.com
Sent: Wednesday, June 11, 2008 7:28 AM
To: t10@t10.org
Subject: Reminder, SAS PHY WG call, June 12, 10:00am CDT

 


Toll Free Dial in Number: (877)810-9442
International Access/Caller Paid Dial In Number: (636)651-3190
PARTICIPANT CODE: 3243413

Webex information:
https://seagate.webex.com/seagate
Topic: SAS-2 PHY WG
Date: Thursday
Time: 10:00 am, Central Daylight Time
Meeting number: 826 515 680
Meeting password: 6gbpsSAS

Agenda:

1. Letter ballot comment resolution status [Elliott]

2. External mini-SAS Cable keying

3. Update on receiver testing. [Witt, Newman]
        Comments on reverse JTF? http://www.t10.org/ftp/t10/document.08/08-248r0.pdf
       


Alvin Cox
Seagate Technology, LLC
Cell 405-206-4809
E-Mail  alvin.cox@seagate.com