[SOLVED] Controlled Impedance Measurements on PCB

[VJKris]

Hi Sir/Madam,

How to we measure controlled impedance on a PCB?

We design a PCB for 100 or 50 ohm +/- 10% and fabricate it.But how to ensure it is 100 ohm+/-10%.
Basically how to measure the controlled impedance on a PCB differential trace?

Regards,
VJ

 

[yura717]

**broken link removed**

 

[andre_luis]

Just to summarize answer at the link above :


Impedances can be measured using:
• A Network Analyser
• A laboratory Time Domain Reflectometer (TDR)
• A Controlled Impedance Test System (employing TDR techniques)


+++

 

[VJKris]

Thanks a lot for the response.