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I wish I were smarter

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  I wish I were smarter Tim Wescott <seemywebsite@myfooter.really> - 2016-03-15 18:40 -0500
    Re: I wish I were smarter Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-03-15 16:46 -0700
      Re: I wish I were smarter Tim Wescott <seemywebsite@myfooter.really> - 2016-03-15 19:05 -0500
        Re: I wish I were smarter George Herold <gherold@teachspin.com> - 2016-03-15 18:37 -0700
    Re: I wish I were smarter dplatt@coop.radagast.org (Dave Platt) - 2016-03-15 17:15 -0700
    Re: I wish I were smarter George Herold <gherold@teachspin.com> - 2016-03-15 18:36 -0700
      Re: I wish I were smarter Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-03-15 19:48 -0700
    Re: I wish I were smarter John Larkin <jjlarkin@highlandtechnology.com> - 2016-03-16 10:29 -0700
      Re: I wish I were smarter Martin Riddle <martin_ridd@verizon.net> - 2016-03-16 17:00 -0400
        Re: I wish I were smarter John Larkin <jjlarkin@highlandtechnology.com> - 2016-03-16 14:26 -0700
          Re: I wish I were smarter bill.sloman@ieee.org - 2016-03-16 15:55 -0700
            Re: I wish I were smarter Martin Riddle <martin_ridd@verizon.net> - 2016-03-16 20:29 -0400
              Re: I wish I were smarter Lasse Langwadt Christensen <langwadt@fonz.dk> - 2016-03-16 17:36 -0700
                Re: I wish I were smarter John Larkin <jjlarkin@highlandtechnology.com> - 2016-03-16 17:41 -0700
                Re: I wish I were smarter Cydrome Leader <presence@MUNGEpanix.com> - 2016-03-18 19:23 +0000
          Re: I wish I were smarter Cydrome Leader <presence@MUNGEpanix.com> - 2016-03-18 19:20 +0000
    Re: I wish I were smarter Jasen Betts <jasen@xnet.co.nz> - 2016-03-17 05:18 +0000
      Re: I wish I were smarter John Larkin <jjlarkin@highlandtechnology.com> - 2016-03-17 10:11 -0700
        Re: I wish I were smarter Winfield Hill <hill@rowland.harvard.edu> - 2016-03-17 15:39 -0700
          Re: I wish I were smarter John Larkin <jjlarkin@highlandtechnology.com> - 2016-03-17 15:57 -0700
            Re: I wish I were smarter Lasse Langwadt Christensen <langwadt@fonz.dk> - 2016-03-17 16:12 -0700
              Re: I wish I were smarter John Larkin <jjlarkin@highlandtechnology.com> - 2016-03-17 16:33 -0700

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#402976 — I wish I were smarter

Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
special Kelvin connection package on that -- I'll just remember it in 
layout".

Crap.  Crud.  Etc.

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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#402977

On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
<seemywebsite@myfooter.really> wrote:

>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>special Kelvin connection package on that -- I'll just remember it in 
>layout".
>
>Crap.  Crud.  Etc.

Nothing like the daily aw shit moment ;-)
		
                                        ...Jim Thompson
-- 
| James E.Thompson                                 |    mens     |
| Analog Innovations                               |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| San Tan Valley, AZ 85142     Skype: skypeanalog  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
I love to cook with wine.     Sometimes I even put it in the food.

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#402979

On Tue, 15 Mar 2016 16:46:27 -0700, Jim Thompson wrote:

> On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
> <seemywebsite@myfooter.really> wrote:
> 
>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a
>>special Kelvin connection package on that -- I'll just remember it in
>>layout".
>>
>>Crap.  Crud.  Etc.
> 
> Nothing like the daily aw shit moment ;-)
> 		
>                                         ...Jim Thompson

I'm down to the point now of "how can I bodge this so I can test the rest 
of the circuit, pending a new, correctly laid out circuit board".

But the new, correctly laid out circuit board does have a kelvin-
connected current sense resistor, dammit!

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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#402998

On Tuesday, March 15, 2016 at 8:05:27 PM UTC-4, Tim Wescott wrote:
> On Tue, 15 Mar 2016 16:46:27 -0700, Jim Thompson wrote:
> 
> > On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
> > <seemywebsite@myfooter.really> wrote:
> > 
> >>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a
> >>special Kelvin connection package on that -- I'll just remember it in
> >>layout".
> >>
> >>Crap.  Crud.  Etc.
> > 
> > Nothing like the daily aw shit moment ;-)
> > 		
> >                                         ...Jim Thompson
> 
> I'm down to the point now of "how can I bodge this so I can test the rest 
> of the circuit, pending a new, correctly laid out circuit board".
exacto knife, and bits of wire.  

George H. 
> 
> But the new, correctly laid out circuit board does have a kelvin-
> connected current sense resistor, dammit!
> 
> -- 
> 
> Tim Wescott
> Wescott Design Services
> http://www.wescottdesign.com

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#402982

>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>special Kelvin connection package on that -- I'll just remember it in 
>layout".
>
>Crap.  Crud.  Etc.

Yeah.  I know, the hard way, that if I leave something "for later" and
don't make explicit notes about it where I cannot possibly ignore
them, I *will* forget the Later.

Have had to do a bunch of reworks of various sorts (hardware and
software) and enjoy the tangy taste of corvid-burger a few times
because of that.

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#402997

On Tuesday, March 15, 2016 at 7:40:42 PM UTC-4, Tim Wescott wrote:
> Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
> special Kelvin connection package on that -- I'll just remember it in 
> layout".
> 
> Crap.  Crud.  Etc.
> 
> -- 
> 
> Tim Wescott
> Wescott Design Services
> http://www.wescottdesign.com

No!  (being mostly a bear of little brain.) 
I always feel I've gotta make X number of mistakes 
on a project, and the sooner I get them over with,
the faster it's done.  :^)

George H. 

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#403011

On Tue, 15 Mar 2016 18:36:25 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

>On Tuesday, March 15, 2016 at 7:40:42 PM UTC-4, Tim Wescott wrote:
>> Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>> special Kelvin connection package on that -- I'll just remember it in 
>> layout".
>> 
>> Crap.  Crud.  Etc.
>> 
>> -- 
>> 
>> Tim Wescott
>> Wescott Design Services
>> http://www.wescottdesign.com
>
>No!  (being mostly a bear of little brain.) 
>I always feel I've gotta make X number of mistakes 
>on a project, and the sooner I get them over with,
>the faster it's done.  :^)
>
>George H. 

The only way to avoid repeating mistakes is to make them the first
time.
		
                                        ...Jim Thompson
-- 
| James E.Thompson                                 |    mens     |
| Analog Innovations                               |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| San Tan Valley, AZ 85142     Skype: skypeanalog  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
I love to cook with wine.     Sometimes I even put it in the food.

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#403089

On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
<seemywebsite@myfooter.really> wrote:

>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>special Kelvin connection package on that -- I'll just remember it in 
>layout".
>
>Crap.  Crud.  Etc.

You might consider having a formal checklist of gotchas for the
layout. Schematic notes are limited, and I remove layout-related notes
before releasing the schematic, so at some point in the process they
disappear.




-- 

John Larkin         Highland Technology, Inc
picosecond timing   precision measurement 

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

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#403123

On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
<jjlarkin@highlandtechnology.com> wrote:

>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
><seemywebsite@myfooter.really> wrote:
>
>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>>special Kelvin connection package on that -- I'll just remember it in 
>>layout".
>>
>>Crap.  Crud.  Etc.
>
>You might consider having a formal checklist of gotchas for the
>layout. Schematic notes are limited, and I remove layout-related notes
>before releasing the schematic, so at some point in the process they
>disappear.

You mean implement ISO9001 ?

;D

Cheers

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#403125

On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
<martin_ridd@verizon.net> wrote:

>On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
><jjlarkin@highlandtechnology.com> wrote:
>
>>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
>><seemywebsite@myfooter.really> wrote:
>>
>>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>>>special Kelvin connection package on that -- I'll just remember it in 
>>>layout".
>>>
>>>Crap.  Crud.  Etc.
>>
>>You might consider having a formal checklist of gotchas for the
>>layout. Schematic notes are limited, and I remove layout-related notes
>>before releasing the schematic, so at some point in the process they
>>disappear.
>
>You mean implement ISO9001 ?
>
>;D
>
>Cheers

No, do something that actually improves quality.


-- 

John Larkin         Highland Technology, Inc
picosecond timing   precision measurement 

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

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#403134

On Thursday, March 17, 2016 at 8:26:29 AM UTC+11, John Larkin wrote:
> On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
> <martin_ridd@verizon.net> wrote:
> 
> >On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
> ><jjlarkin@highlandtechnology.com> wrote:
> >
> >>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
> >><seemywebsite@myfooter.really> wrote:
> >>
> >>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
> >>>special Kelvin connection package on that -- I'll just remember it in 
> >>>layout".
> >>>
> >>>Crap.  Crud.  Etc.
> >>
> >>You might consider having a formal checklist of gotchas for the
> >>layout. Schematic notes are limited, and I remove layout-related notes
> >>before releasing the schematic, so at some point in the process they
> >>disappear.
> >
> >You mean implement ISO9001 ?
> 
> No, do something that actually improves quality.

I'm sure that you could implement ISO 9001 and in a way that didn't improve quality, but most people manage to fit something useful into the bureaucratic straight-jacket.

-- 
Bill Sloman, Sydney

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#403155

On Wed, 16 Mar 2016 15:55:02 -0700 (PDT), bill.sloman@ieee.org wrote:

>On Thursday, March 17, 2016 at 8:26:29 AM UTC+11, John Larkin wrote:
>> On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
>> <martin_ridd@verizon.net> wrote:
>> 
>> >On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
>> ><jjlarkin@highlandtechnology.com> wrote:
>> >
>> >>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
>> >><seemywebsite@myfooter.really> wrote:
>> >>
>> >>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>> >>>special Kelvin connection package on that -- I'll just remember it in 
>> >>>layout".
>> >>>
>> >>>Crap.  Crud.  Etc.
>> >>
>> >>You might consider having a formal checklist of gotchas for the
>> >>layout. Schematic notes are limited, and I remove layout-related notes
>> >>before releasing the schematic, so at some point in the process they
>> >>disappear.
>> >
>> >You mean implement ISO9001 ?
>> 
>> No, do something that actually improves quality.
>
>I'm sure that you could implement ISO 9001 and in a way that didn't improve quality, but most people manage to fit something useful into the bureaucratic straight-jacket.

I can see most managers see it as a waste of time, but there are some
aspects that would solve a lot of problems.

Cheers

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#403158

Den torsdag den 17. marts 2016 kl. 01.30.07 UTC+1 skrev Martin Riddle:
> On Wed, 16 Mar 2016 15:55:02 -0700 (PDT), bill.sloman@ieee.org wrote:
> 
> >On Thursday, March 17, 2016 at 8:26:29 AM UTC+11, John Larkin wrote:
> >> On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
> >> <martin_ridd@verizon.net> wrote:
> >> 
> >> >On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
> >> ><jjlarkin@highlandtechnology.com> wrote:
> >> >
> >> >>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
> >> >><seemywebsite@myfooter.really> wrote:
> >> >>
> >> >>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
> >> >>>special Kelvin connection package on that -- I'll just remember it in 
> >> >>>layout".
> >> >>>
> >> >>>Crap.  Crud.  Etc.
> >> >>
> >> >>You might consider having a formal checklist of gotchas for the
> >> >>layout. Schematic notes are limited, and I remove layout-related notes
> >> >>before releasing the schematic, so at some point in the process they
> >> >>disappear.
> >> >
> >> >You mean implement ISO9001 ?
> >> 
> >> No, do something that actually improves quality.
> >
> >I'm sure that you could implement ISO 9001 and in a way that didn't improve quality, but most people manage to fit something useful into the bureaucratic straight-jacket.
> 
> I can see most managers see it as a waste of time, but there are some
> aspects that would solve a lot of problems.
> 

mostly the problem of other businesses requiring you have it ;)


-Lasse

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#403160

On Wed, 16 Mar 2016 17:36:08 -0700 (PDT), Lasse Langwadt Christensen
<langwadt@fonz.dk> wrote:

>Den torsdag den 17. marts 2016 kl. 01.30.07 UTC+1 skrev Martin Riddle:
>> On Wed, 16 Mar 2016 15:55:02 -0700 (PDT), bill.sloman@ieee.org wrote:
>> 
>> >On Thursday, March 17, 2016 at 8:26:29 AM UTC+11, John Larkin wrote:
>> >> On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
>> >> <martin_ridd@verizon.net> wrote:
>> >> 
>> >> >On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
>> >> ><jjlarkin@highlandtechnology.com> wrote:
>> >> >
>> >> >>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
>> >> >><seemywebsite@myfooter.really> wrote:
>> >> >>
>> >> >>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>> >> >>>special Kelvin connection package on that -- I'll just remember it in 
>> >> >>>layout".
>> >> >>>
>> >> >>>Crap.  Crud.  Etc.
>> >> >>
>> >> >>You might consider having a formal checklist of gotchas for the
>> >> >>layout. Schematic notes are limited, and I remove layout-related notes
>> >> >>before releasing the schematic, so at some point in the process they
>> >> >>disappear.
>> >> >
>> >> >You mean implement ISO9001 ?
>> >> 
>> >> No, do something that actually improves quality.
>> >
>> >I'm sure that you could implement ISO 9001 and in a way that didn't improve quality, but most people manage to fit something useful into the bureaucratic straight-jacket.
>> 
>> I can see most managers see it as a waste of time, but there are some
>> aspects that would solve a lot of problems.
>> 
>
>mostly the problem of other businesses requiring you have it ;)
>
>
>-Lasse

One of our customers dings our quality scores because we aren't
ISO9000. But they aren't either.


-- 

John Larkin         Highland Technology, Inc
picosecond timing   precision measurement 

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

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#403361

Lasse Langwadt Christensen <langwadt@fonz.dk> wrote:
> Den torsdag den 17. marts 2016 kl. 01.30.07 UTC+1 skrev Martin Riddle:
>> On Wed, 16 Mar 2016 15:55:02 -0700 (PDT), bill.sloman@ieee.org wrote:
>> 
>> >On Thursday, March 17, 2016 at 8:26:29 AM UTC+11, John Larkin wrote:
>> >> On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
>> >> <martin_ridd@verizon.net> wrote:
>> >> 
>> >> >On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
>> >> ><jjlarkin@highlandtechnology.com> wrote:
>> >> >
>> >> >>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
>> >> >><seemywebsite@myfooter.really> wrote:
>> >> >>
>> >> >>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>> >> >>>special Kelvin connection package on that -- I'll just remember it in 
>> >> >>>layout".
>> >> >>>
>> >> >>>Crap.  Crud.  Etc.
>> >> >>
>> >> >>You might consider having a formal checklist of gotchas for the
>> >> >>layout. Schematic notes are limited, and I remove layout-related notes
>> >> >>before releasing the schematic, so at some point in the process they
>> >> >>disappear.
>> >> >
>> >> >You mean implement ISO9001 ?
>> >> 
>> >> No, do something that actually improves quality.
>> >
>> >I'm sure that you could implement ISO 9001 and in a way that didn't improve quality, but most people manage to fit something useful into the bureaucratic straight-jacket.
>> 
>> I can see most managers see it as a waste of time, but there are some
>> aspects that would solve a lot of problems.
>> 
> 
> mostly the problem of other businesses requiring you have it ;)

We're doing an ISO implementation at work.

It's resulted in managers sparring over email and CCing dozens of people, 
each citing different sections of the new ISO docs to support what they 
think is right.

It's just going to be a multimillion dollar metric shaped certificate on 
the wall in the end.

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#403359

John Larkin <jjlarkin@highlandtechnology.com> wrote:
> On Wed, 16 Mar 2016 17:00:26 -0400, Martin Riddle
> <martin_ridd@verizon.net> wrote:
> 
>>On Wed, 16 Mar 2016 10:29:05 -0700, John Larkin
>><jjlarkin@highlandtechnology.com> wrote:
>>
>>>On Tue, 15 Mar 2016 18:40:37 -0500, Tim Wescott
>>><seemywebsite@myfooter.really> wrote:
>>>
>>>>Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>>>>special Kelvin connection package on that -- I'll just remember it in 
>>>>layout".
>>>>
>>>>Crap.  Crud.  Etc.
>>>
>>>You might consider having a formal checklist of gotchas for the
>>>layout. Schematic notes are limited, and I remove layout-related notes
>>>before releasing the schematic, so at some point in the process they
>>>disappear.
>>
>>You mean implement ISO9001 ?
>>
>>;D
>>
>>Cheers
> 
> No, do something that actually improves quality.

Ha!

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#403189

On 2016-03-15, Tim Wescott <seemywebsite@myfooter.really> wrote:
> Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
> special Kelvin connection package on that -- I'll just remember it in 
> layout".

can't you assign a special footprint for that part while you're
entering the schematic.

-- 
  \_(ツ)_

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#403238

On 17 Mar 2016 05:18:59 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

>On 2016-03-15, Tim Wescott <seemywebsite@myfooter.really> wrote:
>> Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>> special Kelvin connection package on that -- I'll just remember it in 
>> layout".
>
>can't you assign a special footprint for that part while you're
>entering the schematic.

Kelvin connection is often just a matter of routing. You can usefully
do 4-wire Kelvin to a conventional surface-mount resistor. All you
need to do is remember.

Our software doesn't deal with footprints in the schematic entry
program. Schematic decals are distinct from PCB decals, and the PCB
program handles those.




-- 

John Larkin         Highland Technology, Inc
picosecond timing   precision measurement 

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

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#403277

John Larkin wrote...
> Jasen Betts wrote:
>> Tim Wescott wrote:
>>> Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>>> special Kelvin connection package on that -- I'll just remember it in 
>>> layout".
>>
>> can't you assign a special footprint for that part while you're
>> entering the schematic.
>
> Kelvin connection is often just a matter of routing. You can usefully
> do 4-wire Kelvin to a conventional surface-mount resistor. All you
> need to do is remember.
>
> Our software doesn't deal with footprints in the schematic entry
> program. Schematic decals are distinct from PCB decals, and the PCB
> program handles those.

 What!?!  You can't assign specific PCB footprints to
 various schematic symbols?  What package do you use?


-- 
 Thanks,
    - Win

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#403278

On 17 Mar 2016 15:39:03 -0700, Winfield Hill
<hill@rowland.harvard.edu> wrote:

>John Larkin wrote...
>> Jasen Betts wrote:
>>> Tim Wescott wrote:
>>>> Dammit.  I _distinctly_ remember saying "oh, I don't need to make a 
>>>> special Kelvin connection package on that -- I'll just remember it in 
>>>> layout".
>>>
>>> can't you assign a special footprint for that part while you're
>>> entering the schematic.
>>
>> Kelvin connection is often just a matter of routing. You can usefully
>> do 4-wire Kelvin to a conventional surface-mount resistor. All you
>> need to do is remember.
>>
>> Our software doesn't deal with footprints in the schematic entry
>> program. Schematic decals are distinct from PCB decals, and the PCB
>> program handles those.
>
> What!?!  You can't assign specific PCB footprints to
> various schematic symbols?  What package do you use?

PADS.

PADS has "parts", and each part references a schematic decal
(optionally with gates or some alternate decals) and a PCB decal. The
Logic program creates schematic decals, and the Layout program creates
pcb decals.

A zillion different resistor parts can share the general "resistor"
schematic decal but can have different PCB decals. We do have a
special 4-wire resistor decal, which has 4 pins instead of two.

We create a lot of different parts because a part can have added
attributes, like a Highland stock number, which is handy for automatic
BOM generation. So we have a zillion different SOT23 nfet parts, and
D9 connectors, and opamps, and such that reference a relatively few
decals.


-- 

John Larkin         Highland Technology, Inc
picosecond timing   precision measurement 

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

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