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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. Regardless, there are still lots of great posts in the archive that ware worth looking at. Below are the old forum threads, including responses to the original posts.

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kamal
 Post subject: Parametric/Probecard system
Posted: Tue May 08, 2007 6:34 pm 
 
Lieutenant
User avatar

Joined: Tue May 08, 2007 6:28 pm

Posts: 1

All,

I have a device parametric system which uses a probecard. I would like to have a system( build some known value capacitors/resistors) on the probe card to measure/qualify) the caps and resistors we have in our technology. Is this a feasible way to qualify our production parametric system?Is this typically used in the industry?

Any advise would be appreicated deeply.

thanks

kamal


 
   
 
rftroubleshooter
 Post subject:
Posted: Wed May 16, 2007 4:48 pm 
 
Captain
 

Joined: Wed May 16, 2007 4:16 pm

Posts: 12

Honestly, your best bet is to measure that stuff before you put it on the board. The last company I started used MyData pick and place machines which would electrically test each component before it was placed. That way, you know the part is good when you put it down. Once in circuit, you can do a signature analysis on a part to see if it "looks rigt", but there really isn't a good way to check its absolute value unless you can isolate it.

 
   
 
rftroubleshooter
 Post subject:
Posted: Wed May 16, 2007 4:48 pm 
 
Captain
 

Joined: Wed May 16, 2007 4:16 pm

Posts: 12

Honestly, your best bet is to measure that stuff before you put it on the board. The last company I started used MyData pick and place machines which would electrically test each component before it was placed. That way, you know the part is good when you put it down. Once in circuit, you can do a signature analysis on a part to see if it "looks rigt", but there really isn't a good way to check its absolute value unless you can isolate it.

Steve Montgomery

The RF Troubleshooter

www.rftroubleshooter.com


Posted  11/12/2012

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