Re: Struck ADC test clock source

["Fernando J. Barbosa" <barbosa@jlab.org>]

Hall D Electronics:

Hi Gerard,

I agree it will take some time to get all these parts completed. You can 
also specify SMT devices as we have that capability for a small number 
of prototypes.

Regards,
Fernando



Gerard Visser wrote:
> Hi Fernando,
>     I think this sounds like a good plan. I'm sure that Kim and I will 
> be able interact profitably, especially if she will be doing this work 
> in P-CAD. We will make it so that all parts are hand-solderable, 
> there's no need for leadless IC's except for the oscillator but that 
> is still easily hand-solderable.
>     I agree that it will take about 4 weeks at best before the users 
> have these things in hand. Improving that is not feasible without 
> heavier involvement from you or me and this is not a good option right 
> now.
>     In the meanwhile, I suggest that any test data taking that relies 
> on precise timing from the ADC's be restricted to one 8-channel Struck 
> module running from it's internal clock. At least in particular for 
> the CDC; the FDC can carry on with the 8082A and passive splitter if 
> that happens to work good enough in practice.
>
>     Gerard
>
> Fernando J. Barbosa wrote:
>> Hi Gerard,
>>
>> I am out with the cold. I have some suggestions regarding the clock 
>> circuit.
>>
>> I really cannot commit to do any real work on the circuit that you
>> provided other than just provide some guidance to Kim once she's doing
>> the layout. I am also forwarding your diagram to Kim Shinault
>> (kshinaul@jlab.org).
>>
>> Interacting with Kim will be easy as you also have PCAD. My suggestion:
>>
>> 1. Kim will generate a schematic starting from your diagram and
>> interfacing with you for cross-checks.
>>
>> 2. Kim will layout the board. I can provide some guidance, if needed.
>>
>> 3. Kim will procure the boards and assembly in-house. Perhaps 10 units
>> is a good idea for future use. It will be easy to get additional ones
>> later, if needed.
>>
>> 4. The units will be shipped to you for testing and QA
>>
>> As for schedules, I believe this will take over 4 weeks from start to
>> delivery to users. Dan, Curtis, Yves and Simon need to plan accordingly.
>>
>> Regards,
>> Fernando