[PCB_FORUM] Re: First Article Inspection

Hi Tom,

Sure, you can do this, but this should have been checked during the
fabricator's inspection if you specified electrical testing.

Regards,

Austin

> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Tom Wood
> Sent: Thursday, January 26, 2006 6:11 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: First Article Inspection
>
>
> You check for shorts between plane layers.  That's what I was suggesting.
>
> Tom
> Arira Design, Inc.
> 408-844-8433 x112
>
>
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of
> austin@xxxxxxxxxxxx
> Sent: Wednesday, January 25, 2006 6:44 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: First Article Inspection
>
> Hi Richard,
>
> Agreed, and you also typically check impedance between signals and the
> reference plane layer, not between plane layers.  Not something most
> incoming inspection people know how to do, much less have the equipment to
> do.  That is why I asked Tom if he would elaborate.
>
> Regards,
>
> Austin
>
> Original Message:
> -----------------
> From: richard moffat richard.moffat@xxxxxxxxxxxxxxxxxxx
> Date: Thu, 26 Jan 2006 15:26:09 +1300
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: First Article Inspection
>
>
> You need a $30k TDR for impedance measurement, not a $30 multimeter!
>
> >>> austin@xxxxxxxxxxxx 26/01/2006 2:54 p.m. >>>
>
> Hi Tom,
>
> > c.  get a Multimeter and check impedance between the various
> plane layers.
>
> How do you do that with a miltimeter, and what does that tell you?
>
> Regards,
>
> Austin
>
>
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