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Video: Using a Network Analyzer as a TDR

September 26, 2020 by Rolf Ostergaard

See how you can do fast TDR measurements using a network analyzer or VNA in this video. Whenever you are designing boards with specific characteristic impedances, you will want to be able to verify that on your fabricated boards. It’s recommended to put in test traces on each layer, but how do you measure this.… Read more

Filed Under: Measurement Tagged With: Network Analyzer, PDN, PI, Power Integrity, SA, TG, Video, VNA

Push-Button PCIe PHY Test Possible?

September 17, 2015 by Rolf Ostergaard

How do you make a PCIe PHY test? Whatever type of electronics you design, testing is an integral part of the process. Just “see – it works” is a very shortsighted way of qualifying electronics for mass production. You know that if you have been in the design game for just a short while. Especially… Read more

Filed Under: Measurement Tagged With: Compliance, PCIe, PCIe PHY Test

Oscilloscope Probing for DDR Memory

February 4, 2015 by Rolf Ostergaard

How do you do probing for DDR memory? Placing an oscilloscope probe to measure fast signals is not an easy task. If you want to measure data signals for a memory chip, there is however a solution that you should know. The interposer. A tiny board that can be soldered in between the board and… Read more

Filed Under: Measurement Tagged With: DDR2, DDR3, DDR4, Interposer, Probing

TDR Measurement Using LeCroy SPARQ

May 24, 2013 by Rolf Ostergaard

In this quick video I will show how to do a simple impedance test trace TDR measurement on a PCB using a homemade probe and the LeCroy SPARQ. This nice piece of equipment can do all kinds of fancy stuff including de-embedding of cables (which I used here) and gating away the effects of probes… Read more

Filed Under: Measurement Tagged With: Equipment, Impedance, LeCroy, TDR

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