Contact AMS in Knoxville, Tenn   website is ams-corp.com
They have very highly specialized equipment for measuring impedances.     We use them for testing RTDs in service, Triax cable verification, impedance-current-power demand measurements on inservice equipment.    They may have equipment that performs what you need. 

pat

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Louis Hart
Sent: Wednesday, July 18, 2012 2:20 PM
To: [log in to unmask]
Subject: [TN] Controlled Impedance measurements

Technetters, I am trying to measure the impedance of some traces on a printed circuit board, traces that are 2.5 cm - 3.5 cm in length. They are too short for the TDR here to measure. Could a Vector Network Analyzer make impedance measurements on traces that short? If so, does anyone know of a lab that could make such measurements?

Louis Hart
Compunetics
Monroeville, PA
USA
[log in to unmask]<mailto:[log in to unmask]>
412-858-1232


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