[Halld-tracking-hw] CDC Ground Connections

Fernando J. Barbosa barbosa at jlab.org
Mon Sep 21 16:44:57 EDT 2009


Hi Gerard and Gary,

Yes, there are chamfers on the HVB, one on each side of the connector 
(i.e., close to first and last contacts).

Best regards,
Fernando

Gerard Visser wrote:
> Hi Gary,
> 	I'm not sure exactly what you mean, but certainly a chamfer can be used 
> with these edge connectors and it will help reduce the insertion force 
> considerably.
> 	I'm not arguing against an insertion/extraction mechanism as is now 
> being dicussed. That's also a fine idea. I would think you might still 
> want to chamfer the board edge.
>
> 	Gerard
>
> wilkin wrote:
>   
>> No Gerard, it does not. The 28 traces start at the edge of the board, so
>> applying a chamfer
>> There is difficult.
>>
>> gw 
>>
>> -----Original Message-----
>> From: Gerard Visser [mailto:gvisser at indiana.edu] 
>> Sent: Monday, September 21, 2009 2:34 PM
>> To: wilkin
>> Cc: 'Tim Whitlatch'; cmeyer at ernest.phys.cmu.edu; 'GlueX Tracking'
>> Subject: Re: [Halld-tracking-hw] CDC Ground Connections
>>
>> Hi Gary,
>> 	Does the CDC HVB have a chamfer on the edge that goes into the
>> connector?
>>
>> 	- Gerard
>>
>> wilkin wrote:
>>     
>>> Hi all,
>>>  
>>>     I just measured the insertion force multiple times and came up 
>>> with an average reading of 10 pounds.
>>>  
>>> gw
>>>       
>>     
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