Re: Preamp & Interposer

[Gerard Visser <gvisser@indiana.edu>]

Hall D Electronics:

Hi Fernando,
	Absolutely, this is no problem. 15 good channels is quite sufficient 
for my work. I am at Brookhaven all this week, the earliest I can send 
the board is monday, unless that is a real problem (let me know) that's 
what I'll do. I think I do have your shipping address in an earlier 
email, Yves.
	Sincerely,

	Gerard

Fernando J. Barbosa wrote:
> Hi Yves,
> 
> I verified that the interposer had some bad solder joints and these have
> been fixed. The one you have should be good.
> 
> I checked the amplifier and indeed channel 16 was not working. Further
> tests revealed that the ASIC A input (for negative going signals or
> anodes) has been damaged. The B input (for positive going signals or
> cathodes) works fine.
> 
> Because I don't have additional preamp cards, I suggest that Gerard send
> you his preamp and I will send him yours, which he can use for his
> tests. I will ask Elke for additional funds to produce a few more preamp
> cards (we have a few ASICs left).
> 
> Gerard, let us know if if this works for you.
> 
> Regards,
> Fernando