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April 1997

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Subject:
Re: "Pogo pins test probes"
From:
"Jeffrey C. Garland" <[log in to unmask]>
Date:
Thu, 17 Apr 1997 11:20:20 -0700
Content-Type:
text/plain
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text/plain (62 lines) 
Bed of nails tester typically test utilizing DC signals.  Loaded PCB test
fixtures do use "Spring Pins" which require some frequency to travel
through.  The spring in the probe looks like an inductor to an AC signal. 
Reduce the inductance buy reducing the travel of the probe.  

Some test systems may utilize a spring probe at the connection of the
fixture to the tester also. 

Jeff Garland
Sales Engineer
Lavenir Technlogy, Inc.
603-431-6279
[log in to unmask]

----------
> From: Steve Tetorka <[log in to unmask]>
> To: [log in to unmask]
> Subject: "Pogo pins test probes"
> Date: Thursday, April 17, 1997 11:25 AM
> 
> 
> It appears that "pogo pins" used in "bed-of-nails" test fixtures may
cause 
> signal problems at 'high frequencies'.  This problem is due to the length
of 
> the probes.
> This same problem had occured with IC test sockets.  Your comments are 
> welcome.
> Thank you.
> 
>
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