#AskTek: What is Signal Integrity? @tektronix
#AskTek: What is Signal Integrity?  @tektronix
Uploaded August 2025 | Updated September 2026, 2 weeks ago
You have a question, we have an answer. Today's #AskTek question:

π–π‘πšπ­ 𝐒𝐬 π’π’π π§πšπ₯ 𝐈𝐧𝐭𝐞𝐠𝐫𝐒𝐭𝐲?

Signal integrity (SI) refers to the quality of the electrical signals as they travel through a printed circuit board (PCB), connector, or cable.

In a perfect world, digital signals are clean square waves like the ones shown in the image below. But in high-speed systems the signal gets distorted by:

πŸ’ Transmission line effects (impedance mismatches)
πŸ’  Reflections
πŸ’  Crosstalk
πŸ’  Power/ground noise
πŸ’  Electromagnetic interference (EMI)

Even things like board layout and vias start to matter a lot when you're working at GHz speeds.


We don’t just measure signalsβ€”we help engineers understand them. Let us know what questions you have in the comments and subscribe to learn more. πŸ‘‡

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#AskTek: What is Signal Integrity?

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