[PCB_FORUM] Re: no dc pwr pins hooked to gnd
- From: SjChar3@xxxxxxxxxxxx
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Tue, 08 Mar 2005 16:22:08 -0500
thanks richard, i will check this.
"richard moffat" <richard.moffat@xxxxxxxxxxxxxxxxxxx> wrote:
>If it thinks some nets should be a DC net, it will give a warning. I
>believe it's based on the number of pins that have a PINUSE of POWER or
>GROUND.
>
>An example of this may be a filtered supply going to a power pin of an
>IC. The primary side of the supply may be defined with a dc voltage,
>but not the secondary, as it is usually given a system-defined netname
>in the schematic.
>
>Hope my ascii-art holds out (view in courier):
> ___________
> ind | |
>3v3_in -----mmm----------|Pwr-in |
> | | | |
> = = |___________|
> | |
>
>
>The netname into the ic is not 3v3_in anymore because of the inductor.
>Thefore, it was probably not assigned as a DC Net in the Setup Advisor.
>However, because the filtered supply may be going to several power pins
>or ics, it warns you it should probably be defined as a DC net.
>
>It's usually nothing to worry about. However, it's useful to read it
>in case you forgot to define something like GND and the Topology Editor
>goes spastic and crashes.
>
>Cheers,
>Richard
>
>
>>>> kmccowan@xxxxxxxxxxxxxx 9/03/2005 9:34:51 a.m. >>>
>Did you ever get an answer to this?
>If so I never saw it. I would guess that you
>don't have any input on the power net.
>If you got it solved, what was the answer?
>
>Kevin McCowan
>Sr. PCB Designer
>TSI Telsys
>
>sjcharles@xxxxxxx wrote:
>> I read email and it doesn't make sense , let me add a little more,
>this is while in PCB si, setup advisor, I guess its more of a warning,
>"following dc nets contain no power or gnd pin"
>> thanks
>>
>>>From: <sjcharles@xxxxxxx>
>>>Date: 2005/03/03 Thu PM 05:15:08 EST
>>>To: <icu-pcb-forum@xxxxxxxxxxxxx>
>>>Subject: [PCB_FORUM] no dc pwr pins hooked to gnd
>>>
>>>Group, while going through setup dc nets we get error "no dc nets
>hooked to power pins". We're bringing the power on board through bananna
>jacks. Anything we can do to fix this error?
>>>Thanks
>>>
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