Power Rail Probes

Power Rail Probes

Optimized for power integrity measurements, these probes combine low noise contribution, DC offset up to 60 V, high bandwidth, low loading, and a wide range of connectivity alternatives.

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Why use a power rail probe over a passive or differential probe?

power rail probe vs passive probe. Cleaner signals with power rail probe

Power rail probes offer extreme clarity into the power distribution network compared to traditional passive probes.

Traditional power integrity applications typically use passive or differential probes to measure power rails. The changing technology landscape means designers need higher accuracy ripple measurements with very fast transitions pushing into multiple GHz range. New design challenges call for new measurement equipment that can minimize noise from the measurement tools while also offering more bandwidth to see more signal content. The ultra-low noise TPR1000/4000 power rail probe offers low loading for accuracy (especially in the most sensitive measurements) and offers low noise contribution and high bandwidth options.

More data, faster signals

clean accurate ripple measurements with power rail probe

The above is a ripple measurement on 3.3V rail using the power rail probe. Using 20MHz bandwidth limit and a 6 Series Oscilloscope, you can see the clean and most accurate signals coming from the power rail probe.

typical measurements you would see with a passive probe

The above is a ripple measurement on 3.3V rail using the passive probe. Signals shown are more typical measurements you would see with a passive probe.

The new power rail probe covers power rail transient events up to 4 GHz and offers offset voltage range of ±60V to measure power supplies from plug, down to the pin of an integrated circuit. It also offers a wide dynamic range of ±1V, which, on higher voltage rails, lets you look at droop on the line or when a lot of current is drawn by load or transients. Coupled with the right scope, this powerful combination means you don’t have to worry if the noise you are seeing is from your test equipment or if you’re seeing aggressors in your system that you could never see before.

Overcoming the connectivity challenge

y-leads with clamp and new browser
lock-snap connectors for TPR
connecting to micro-components for power rail measurements

Power engineers are challenged to get more power efficiency from smaller and tighter designs. This is especially true for engineers in the automotive, industrial and consumer markets where typical validation requires probing at least 1 or more rails in parallel with other signals. This creates new constraints on connectivity due to tight spacing, buried signals, and smaller geometry components.

The power rail probe comes with modular and flexible connectivity options to cover most needs. Now, when you’re soldering to a surface-mount component connected to a power rail, you have the MMCX lock-snap connections that make test set-up a breeze.

The good, better, best scopes for power rail measurements

Tektronix mid-range scopes

No matter the industry, power integrity requirements are becoming more and more strict and the number of power rails in a single design is only growing. Depending on your bandwidth needs, Tektronix has a whole suite of oscilloscopes that are optimal to pair with the power rail probe.

For the engineers that are working on the power integrity of fast devices like microprocessors, memory components, FPGAs, storage devices and image sensors, and need the highest accuracy in ripple measurements with transitions in the 2 to 4 GHz range, you have the 6 Series MSO scope that has bandwidths up to 8GHz. When you don’t need as much bandwidth but need to make accurate ripple measurements on an ever-growing number of DC supplies, you can use the up to 8 Channels of the 5 Series MSO. The MDO3000 and MDO400C offer a great option when making traditional ripple measurements under 1GHz at the bench.


Models

Model Attenuation Bandwidth Dynamic Range DC Offset List Price
TPR1000
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter

1.25x

1 GHz

±1 V

±60 V

-
Configure & Quote
TPR4000
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter

1.25x

4 GHz

±1 V

±60 V

-
Configure & Quote
Model
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter
TPR1000
AttenuationBandwidthDynamic Range

1.25x

1 GHz

±1 V

DC Offset

±60 V

Model
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter
TPR4000
AttenuationBandwidthDynamic Range

1.25x

4 GHz

±1 V

DC Offset

±60 V

Model Attenuation Bandwidth Dynamic Range DC Offset List Price
TPR1000
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter

1.25x

1 GHz

±1 V

±60 V

-
Configure & Quote
TPR4000
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter

1.25x

4 GHz

±1 V

±60 V

-
Configure & Quote
Model
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter
TPR1000
AttenuationBandwidthDynamic Range

1.25x

1 GHz

±1 V

DC Offset

±60 V

Model
View Compatible Instruments
6 Series MSOFully Compatible
5 Series MSOFully Compatible
DPO7000CFully Compatible
MSO/DPO5000BFully Compatible
MDO4000CPartially Compatible
MDO3000Partially Compatible
MSO/DPO70000C/DX/SXFully compatible with use of TCA-VPI50 adapter
TPR4000
AttenuationBandwidthDynamic Range

1.25x

4 GHz

±1 V

DC Offset

±60 V

TitleType
Getting Started with Power Rail Measurements Application Note

Power integrity measurements require ripple measurements in the GHz range with very low noise contribution and low loading. This application note gets you started with making high-accuracy power rail measurements.

Application Note
Explore a collection of test and measurement tools chosen by Tektronix experts perfect for engineers working on power integrity. From measuring ripple on DC power rails to seeing noise on your power…
0h 1m 25s
Are you seeing ALL the noise from your power rails? Lee Morgan, Technical Marketing Manager in EMEA, demos one of our power integrity setups with a 6 Series MSO, our new Power Rail Probes, and an…
0h 1m 27s
If you’ve ever worked with micro components of a power supply circuit, you know exactly how this gentleman feels. Our brilliant team in Japan created this video to show how painful it can be to…
0h 3m 2s
See the ultra-low noise performance of the TPR4000 Power Rail Probe, and how it can be used for measuring DC power rail noise in microvolts, especially when paired with the 6 Series MSO oscilloscope.
0h 6m 15s
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