Lpc2000

I know this may not be the right group for this question. But it does 
seems to have the right crowd, right ?

We have a HP8563E Spectrum Analyzer. I want to use it to do some in-
house preliminary EMI compliance test. This would help us in the 
right direction to correct some possible EMI problems. 

What kind of antenna and other must-have gears do I need ? Any 
advice ?

Thanks

Lei

--- In lpc2000@yahoogroups.com, "fl429" <fl429@y...> wrote:
> 
> I know this may not be the right group for this question. But it 
does 
> seems to have the right crowd, right ?
> 
> We have a HP8563E Spectrum Analyzer. I want to use it to do some in-
> house preliminary EMI compliance test. This would help us in the 
> right direction to correct some possible EMI problems. 
> 
> What kind of antenna and other must-have gears do I need ? Any 
> advice ?
> 
> Thanks
> 
> Lei

This is not the sort of thing you should expect to answer on a group 
like this.

You'll need various antennas and probes depending on what you're 
trying to measure.

You need a RF-clean work area for some testing.

If you're unsure (which it seems you are - from reading your post), I 
suggest looking up a test place in the yellow pages.

Unless you have the RF clea area as mention below it is not worth to buy the
antennas. You should have a B-Field probe. These are good for sniffing out
hot-spots on your board. Make a note of the radio stations in your area,
because I had an engieer in my group spend 1/2 day trying to figure out what
was causing a big spike at 94.7Mhz, he didn't realize it until I asked which
radio station was playing in the lab.

If your budget allows it, take your board/product to a lab for a pre-scan. I
think that you will get more bang for buck versus buying antennas and
creating a RF clean work area.

> -----Original Message-----
> From: embeddedjanitor [mailto:manningc2@...] 
> Sent: Sunday, February 20, 2005 5:33 PM
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Re: EMI Testing
> 
> 
> 
> --- In lpc2000@yahoogroups.com, "fl429" <fl429@y...> wrote:
> > 
> > I know this may not be the right group for this question. But it
> does 
> > seems to have the right crowd, right ?
> > 
> > We have a HP8563E Spectrum Analyzer. I want to use it to do 
> some in- 
> > house preliminary EMI compliance test. This would help us 
> in the right 
> > direction to correct some possible EMI problems.
> > 
> > What kind of antenna and other must-have gears do I need ? 
> Any advice 
> > ?
> > 
> > Thanks
> > 
> > Lei
> 
> This is not the sort of thing you should expect to answer on 
> a group like this.
> 
> You'll need various antennas and probes depending on what 
> you're trying to measure.
> 
> You need a RF-clean work area for some testing.
> 
> If you're unsure (which it seems you are - from reading your 
> post), I suggest looking up a test place in the yellow pages.
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
>

Actually, I have a 2x2x2 cu ft grounded mesh enclosure. I was 
thinking about using it as the "clean" area to place my board in. I 
admit I have never done something like that myself.

We have been using a third-party lab to do our testing. I am 
wondering if I could put something simple together so that by 
comparing test done in the past by "expert" lab and now my own jig 
that I can get a rough picture of EMI of my future boards before I 
send them out to an external lab for final testing. 

Is that too much to ask ?!

Thanks

Lei   


--- In lpc2000@yahoogroups.com, "embeddedjanitor" <manningc2@a...> 
wrote:
> 
> --- In lpc2000@yahoogroups.com, "fl429" <fl429@y...> wrote:
> > 
> > I know this may not be the right group for this question. But it 
> does 
> > seems to have the right crowd, right ?
> > 
> > We have a HP8563E Spectrum Analyzer. I want to use it to do some 
in-
> > house preliminary EMI compliance test. This would help us in the 
> > right direction to correct some possible EMI problems. 
> > 
> > What kind of antenna and other must-have gears do I need ? Any 
> > advice ?
> > 
> > Thanks
> > 
> > Lei
> 
> This is not the sort of thing you should expect to answer on a 
group 
> like this.
> 
> You'll need various antennas and probes depending on what you're 
> trying to measure.
> 
> You need a RF-clean work area for some testing.
> 
> If you're unsure (which it seems you are - from reading your post), 
I 
> suggest looking up a test place in the yellow pages.