Picotest

We all know the rails got faster than the methods used to measure them.

These are the questions you are asking.

𝟎𝟏 My rail is over 1,000 A. Why can't I validate it the way I used to?
𝟎𝟐 How do I know the ripple I'm seeing is the rail and not ground bounce, a ground loop or common-mode noise?
𝟎𝟑 My Bode plot looks fine and I'm under target impedance, so why does the rail still ring on a load step?
𝟎𝟒 Can I measure large-signal impedance, fast transients and closed-loop stability on the scope I already have? 05 What's coming next for measuring modern power delivery networks?

SEPIA answers the stability one from a single load step. It reads phase margin, Q and an equivalent RLC model straight off the ringing, without breaking the loop or injecting a signal. It runs on your Tektronix MSO with Picotest load steppers and injectors, and Picotest or Tektronix probes.

And you can order the Tektronix side directly from us too.
picotest.com/solutions/tektronix

Same load step, two time bases.
At ms/div you see a dip and call it good. At µs/div you see the loop — the overshoot, the ring, the recovery your controller is really doing.

If your step generator can't get you to µs/div, you're not measuring transient response. You're measuring an average.

https://www.picotest.com/product/transient-load-steppers-for-power-systems-test-and-vrm-pdn-validation/

It's October and that means we are offering the absolute BEST PRICE we ever offer on our Power Integrity Bundle! This year the bundle now includes the Component Test Fixture so you really can do EVERY TEST!

On the PWR100 station that's a further $1,800 saved!

Get the absolute best price we offer all year, with a 10% discount on probes, injectors and DC Blocks included in the Power Integrity Bundle, which is already a fantastic discounted bundle price. Contact us with your requirements and we will be sure to add the further 10% discount on the included products.

This won't be available for at least another 11 months and is our way of ensuring your end-of-year budget goes as far as it can.

What’s Included in the Offer:
Probes – Achieve precise signal measurement even in challenging conditions.
Injectors – For seamless signal injection without disrupting your setup.
CTF - Component Test Fixture

Shop Now Use Code THANKYOU10 - https://www.picotest.com/product/power-integrity-station-pwr100/

Power Integrity Station - PWR100-1 or PWR500-1 - Picotest A full suite of products for electronic engineers to perform power integrity testing. A VNA, probes, injectors, cables. Everything you need.

https://lnkd.in/e7kAcwfK

Automating SEPIA for Faster Power Rail Tuning | APEC 2026 Tony shows how to use SEPIA on a Tektronix 6 Series Oscilloscope to...

A picohenry is a millionth of a millionth of a henry. You can't measure one directly — so how do you know it's there?

Steve Sandler opens with something deceptively simple: try to weigh a single feather. Set it on a lab balance and it won't sit still — air currents, static, even your breath move it more than it weighs. The thing you want to measure is smaller than everything disturbing it.

That's the whole game in extreme measurement, and it scales all the way down to the picohenry — roughly one micron of wire. Ignore it at DC and it's nothing. But V = L·di/dt: at a fast edge, that "nothing" becomes ~10 mV of noise on a sub-1V rail. At 1 GHz it's ~6.3 mΩ, blowing your milliohm target impedance.

So you reach for a precision component fixture, a VNA, careful high-frequency calibration and de-embedding. And here's the part that keeps me up at night:

You never actually measure the picohenry. You measure your fixture, model it, and subtract it — so the number on the screen is only as honest as that model.

👉 How far do you trust de-embedding before you stop believing the number? Where has it burned you?

(Carousel below — swipe through.)

Do you know how our CTF works?
https://youtu.be/95PhuivwIeo?si=gdRvzUle20Dsb_QQ

Your Capacitor Model Is Lying — Measuring Impedance to 31 pH on the Bench Your PDN simulation is only as accurate as the component models beh...

Steve Sandler joins Tektronix for "Ask the Experts: Solving Today's Toughest Power Integrity Questions."

Bring the measurement problem you're stuck on — PDN impedance, VRM stability, rail noise, transient response — and get it answered live by the panel.

TUES, August 25 · 10AM PDT. Registration link below.
https://tek.brandlive.com/Ask-the-Experts-Solving-Today-s-Toughest-Power-Integrity-Questions

Turn the Keysight E5061B VNA you already own into a complete power integrity test bench.

One instrument. Six power integrity tests — each enabled by Picotest probes, injectors, and fixtures:

• Component testing & modeling — CTF
• PDN impedance — P2104A / P2102A
• VRM impedance — J2113A, J2102B
• PSRR — J2120A, J2121A, P2124A
• Stability, Bode — J2101A, J2110A
• NISM support — P2102A, P2105A, NISM software

See how it works → https://www.picotest.com/insights/keysight-e5061b-vna-gains-non-invasive-stability-measurements/

Measuring loop stability usually means breaking the loop. It doesn't have to.

The Keysight E5061B ENA, paired with Picotest's P2102A 2-Port Probe and NISM, measures stability non-invasively — phase margin and effective-Q straight from the output impedance, nothing to cut or inject into the feedback path.

And stability is just one of six power-integrity tests one E5061B can run:

• Component testing & modeling • PDN impedance • VRM impedance • PSRR • Bode stability • NISM

One VNA you already own. Probes, injectors and fixtures from Picotest do the rest.

🔗 See how non-invasive stability works → picotest.com/insights/keysight-e5061b-vna-gains-non-invasive-stability-measurements/