Subject: RE: NTT sync error
Date: Thu, 3 Sep 1998 16:28:57 -0500
From: "Rood, Omar" <Omar.Rood@mts.com>
To: 'Rod Larson' <rod.larson@mts.com>

Rod,  I agree that i no longer think it is application related but is
hardware.  I am getting skeptical we can fix on site.  Perhaps we should
send Brad's spare 469 over?  Omar

> -----Original Message-----
> From: Rod Larson [SMTP:rod.larson@mts.com]
> Sent: Thursday, September 03, 1998 12:20 PM
> To:   omar.rood@mts.com
> Subject:      NTT sync error
>
> Omar,
> I have had no luck again getting any sync errors to occur on Brad's
> machine, even by loading up the processor.  I even put in a 33 MHz
> Radisys
> (vs. 100 MHz) and it did not crash.  Hugh Sparks thinks there is
> something
> on the VME bus that is not within spec on data transmission.  It could
> even
> be the GRES-II or ADDA boards.  Since digital i/o can ascerbate the
> problem
> on-site, it could be the GRES board.
>
> Both Hugh and I believe that until we put a bus analyzer on the NTT
> VME we
> won't know exactly what's happening.
>
> NTT had the sync errors occur again during press day, so the gain will
> probably go up on this problem.
>
> I am going to try to find some 497's to hook up to Brad's 498; we only
> need
> the station controllers (the module type is unimportant) to answer to
> 2
> chassis numbers.  So far, there are not many 497's around in-plant at
> the
> moment.  The only console w/ 2 497s is the B600 and that project is
> hot now
> cuz of pending customer visit.
>
> I think we have to crash this problem somehow and it might take
> drastic
> measures.  The 2 systems that have this problem are the NIED S/V
> controller
> and NTT, no other.  It almost points to hardware somehow, because I
> have
> found that CPU loading is just as high on HUD and MOC.  Also, I don't
> think
> that you or your jobs should carry the full burden of this problem cuz
> I do
> not believe it is application related.
>
> Let me know what you think.  I will continue to pursue a way to hook
> up
> 497s but I am not holding my breath.
> Rod Larson
