[evlatests] 3-bit status

[Doug Gerrard]

I believe you got it all correct.  One slight correction is that the 
four 3-bit prototypes coming back are all in D301's so two will be moved 
to D303's.  Let us know if you would like for these two sets to go into 
different antennas than 15 and 28.  I presume the biggest consequence to 
changing antennas would be with the T304's.

Doug





Michael Rupen wrote:
> There were a number of tweaks to the 3-bit system yesterday.  This is
> my understanding of what I've heard -- please send along any corrections!
> 
> 
> * New samplers in ea10, ea12; all old samplers removed from array
> 
>    We currently have all the first article sampler boards out on
>    the array, with 4 samplers (2 modules) each in:
> 
>        ea06  ea07  ea10  ea12  ea14  ea26
> 
>    ea06, ea07, ea10, ea14, and ea26 have new T304s
>    ea12 is still using old T304s -- we expect no fringes for A2C2, and
>      possibly low amp on A1C1
> 
>    The old samplers will be returned to the array once Mike is done with
>    them (primarily putting in the new firmware), probably next week.
>    T304s for these will appear a few weeks thereafter.
> 
>    Note that the sampler that was in ea15-A1 looked quite dead when on the
>    array.
> 
> 
> * The monitor point on the d301/d303 reports the following
>    serial numbers for the samplers currently on the array:
> 
>      ea06-d301  073 110921|1417
>          -d303  115 110919|1109
> 
>      ea07-d301  121 110906|1727
>          -d303  119 110907|0748
> 
>      ea10-d301  001 111003|0904
>          -d303   67 111003|1705
> 
>      ea12-d301  085 111003|1323
>          -d303   99 111004|0812
> 
>      ea14-d301  125 110912|1325
>          -d303  127 110908|1556
> 
>      ea26-d301  blank ???
>          -d303  123 110919|1421
> 
>      ea15, ea28: no 3-bit samplers any more
> 
>    Note that ea26-d301 has no serial number in there -- maybe Mike can
>    fix this?
> 
> 
> * Hichem fixed the MIB code per Barry's request, to ignore 3-bit
>    power commands if the 3-bit sampler is already on.  This should
>    eliminate various oddities we saw in our last tests (Tuesday I think?).
>    The most prominent problem from those earlier data sets was a reset of
>    the 3-bit samplers 15-20 seconds after the beginning of each 3-bit scan.
>    I believe this at least has been eliminated (thanks Hichem!) but am
>    waiting to hear back from Vivek about the more subtle issues.
> 
> 
>              -- Michael
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