[evlatests] [Fwd: Re: 8-bit PDif/Psum compression meeting]

[Rick Perley]

    Thanks to Mark C. for catching an error.

    The proposed 'PDif' meeting is *tomorrow, Thursday*.  Not Friday.

    Rick

-------- Original Message --------
Subject: 	Re: [evlatests] 8-bit PDif/Psum compression meeting
Date: 	Wed, 20 Jun 2012 15:57:22 -0600
From: 	Mark Claussen <mclausse at nrao.edu>
To: 	rperley at aoc.nrao.edu
CC: 	mclausse at aoc.nrao.edu
References: 	<4FE246B3.8090305 at aoc.nrao.edu>



Do you mean tomorrow or Friday ?

Mark


On Wednesday 20 June 2012 15:54, Rick Perley wrote:
>     The 'PDif Compression' problem, which is notable at all bands, but 
> is particularly troublesome at P, L, and S bands, is still wanting an 
> explanation.  By all accounts, 'it can't happen'.  But it does. 
> 
>     I've reserved Rm 280 at 9AM tomorrow (Friday), with the purpose of 
> reviewing the characteristics of this effect, and with the hope of 
> generating some useful tests for its origin.   If this time presents a 
> real problem, let me know ASAP, with suggestions for an alternate time 
> (not date).
> 
>     Note that we're focusing on the problem as seen with the 8-bit 
> system.  The '3-bit compression' problem, while much worse by some 
> measures, is understood to arise with the expected overflow of the 3-bit 
> samplers, and is hence correctable (at least in theory).  It may well be 
> that the additional problem plaguing the 8-bit system may exist within 
> the 3-bit system, but this is not yet known. 
> 
>     Rick
> 
>    
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