[SI-LIST] Characteristic Impedance mesurement on PCB

Hi ,
 
I'm trying to measure the characteristic impedance of a trace(SINGLE ENDED) on 
the PCB  using a TDR
This trace has a Amplifier and a DAC on it's path.
My teammate feels we need to activate it, giving the various voltages for the 
amplifier.
I feel we can measure the impedance whichout activating the circuit just like 
we would measure the impedance of a connector.(passive)
 
What do you'll think?
 
Thanks for any input.
 
Pam

      
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field


List technical documents are available at:
                http://www.si-list.net

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu
  

Other related posts: