[Halld-tracking-hw] cable strip length

[Fernando J. Barbosa]

Hi Curtis,

Thanks for the reply. It will be hard to find anything for the braid to 
be less than the length you already have. With a requirement of about 
1.2 cm for the soldering and allowing 2 wire diameters for the bending, 
the required space on both sides of the connector becomes 1.2 cm + 5 mm 
= 1.7 cm. Would 2 wire diameters work? Should Slava consider 2 cm?

Thanks and best regards,
Fernando



Curtis A. Meyer wrote:
> Hi Fernando -
>
>     based on your references, we found a reasonably priced tool that
> can set any length of strip you want. Assuming the following represents
> the end of the wire:   A is the stripped length of the conducting core, B
> is the length of the teflon insulator and C is the stripped length of 
> the outer
> braid.
>
>                                                      
> eeeeeeeeeeeeeeeee      teflon
>                                         bbbbbbbbbbbbbbbbbbbbbb     braid
>                                eeeeeeeeeeeeeeeeeeeeeeeeeeeeee     teflon
>                       xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx    conducting core
>                                 eeeeeeeeeeeeeeeeeeeeeeeeeeeeee    teflon
>                                          bbbbbbbbbbbbbbbbbbbbbb   braid
>                                                      
> eeeeeeeeeeeeeeeeee    teflon
>
>                      |-- A--|-- B --|-- C -- |
>
> The standard stripper we had set A=B=C=6mm. This is no longer necessary,
> but we need some feel for what reasonable lengths are. We could 
> probably solder
> with A=3mm. The insulation on B probably needs to be of similar length 
> (3-4mm),
> and then the question comes to the outer braid.
>
> Currently, we are using some crimp on tubes to help solder to the 
> board. The only
> length that we are able to find for these is 6mm. If someone knows of 
> a source of
> shorter pieces that are not outrageously expensive, that would control 
> this length.
> Lacking that, it appears that our current solution would need C=6mm.
>
> The above dimensions have a PC board that extends about 1.2 to 1.3 cm 
> beyond
> the connector on both sides of the connector. It is also important to 
> note that the
> wires themselves extend beyond the board as it takes some space to 
> bend them
> through 90 degrees so that they can go through the swiss cheese plate.
>
> That all said, I think that there is some hope of shortening C if an 
> appropriate
> part can be obtained.
>
>   - Curtis
>
> Fernando J. Barbosa wrote:
>> Hello everyone,
>>
>> I need to know what is your final spec for the stripping of the coax. 
>> This is needed before Slava can proceed with the final placement of 
>> the preamp connectors due to spacing.
>>
>> Best regards,
>> Fernando
>
>
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