Re: Electronics at IU

[Paul Smith <ptsmith@indiana.edu>]

Hall D Electronics:

Yes, it is a Tracewell "T-Frame" crate.  We could replace the  
backplane at IU.  It has a cPCI power supply; I'm not sure if all the  
voltages are the same as VME64X?


On Dec 5, 2007, at 10:48 AM, Fernando J. Barbosa wrote:

> Hi Matt,
>
>    I talked to David Abbott about the cPCI crate you have. He  
> recalls ordering both a VME64x and cPCI crates from Tracewell but  
> he does not recall shipping it to IU. Is this crate a Tracewell  
> crate? This are used for prototyping and provide access to the  
> electronics from the side and has a limited number of slots.
>
>    If this is a Tracewell crate, there are several options;
>
> 1.   You can contact Tracewell and have them "update" it to VME64x  
> by replacing the backplane. You don't need a VXS to use the fADC250.
>
> 2.   You can buy the backplane from Tracewell and have it installed  
> at IU.
>
> 3.   Send me the crate and we will update per 1 or 2 above.
>
>    The update should cost in the neighborhood of $2k but at least  
> we recover some of the cost from purchasing it as cPCI crate. These  
> are my suggestions and I don't know if Elke has the money under  
> option 3. I will talk to Elke sometime today.
>
> Best regards,
> Fernando
>
>
>
>
> Matthew Shepherd wrote:
>>
>> Hi Elke,
>>
>> Fernando's idea of using Paul's ADCs was a good one.  With Paul's  
>> help, we have located 3 single-channel 8-bit, 250 MHz FADCs that  
>> Paul designed and built on PCI cards.  We can plug these into a  
>> Linux box and use them for readout of our test stand.  So  
>> temporarily our electronics issues are solved.
>>
>> I should also add that we have a compact PCI crate on loan for  
>> JLab that was purchased when IU was planning to design and build  
>> the FADC readout for the FCAL on the cPCI platform.  The form  
>> factor is the same as VME I believe, so there could be some cost  
>> savings in creating an additional test stand since one would only  
>> need a backplane and CPU.
>>
>> -Matt
>>
>>
>> <barbosa.vcf>