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Highlights

Bandwidth

  • 4 GHz (-3 dB)
  • Tr = 108.5 psec (10-90%)

Input range

  • DC attenuation ratio: 10:1 or 5:1
  • Input voltage range: 2.5 Vpp or ± 1.25 V at 5:1 attenuation, 5 Vpp or ± 2.5 V at 10:1 attenuation
  • Input common mode range: ± 7 VDC to 100 Hz, ± 1.25 V at >100 Hz at 5:1 attenuation, ± 2.5 V > 100 Hz at 10:1 attenuation
  • Offset range: ± 16 V when probing a single-ended signal

Input impedance

  • DC input resistance : R diff = 100 kΩ ± 2%, R se = 50 kΩ ± 2%
  • Input resistance at > 10 kHz: R diff = 1 kΩ, R se = 500 Ω
  • Input capacitance : C diff = 32 fF, C se = 44 fF (with ZIF probe head)

Connectivity

  • N2848A InfiniiMax III QuickTip probe head and N5445A InfiniiMax III browser
  • N5439A InfiniiMax III ZIF probe head
  • N5444A InfiniiMax III 2.92 mm/3.5 mm/SMA probe head
  • N5441A InfiniiMax III solder-in probe head

The N2830A Series InfiniiMax III+ probing system is the next generation of InfiniiMax probing, greatly expanding the measurement capability and usability of a probe capable of measuring all components of a differential signal. The built-in InfiniiMode technology allows customers to switch differential, single-ended, and common mode without adjusting probe tip connections.

The N2830A Series probe’s InfiniiMode provides the following modes of operation:

  • A – B (differential)
  • A – ground (signal singled A)
  • B – ground (signal singled B)
  • (A + B)/2 – ground (common mode)

The InfiniiMax III+ works with the full array of InfiniiMax III probe heads and supports the full bandwidth of the InfiniiMax III+.
 

Extend The Capabilities

Accessories
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Featured Resources for N2830A InfiniiMax III+ Series Probe Amplifier, 4 GHz

Data Sheets 2025.04.22

InfiniiMax RCRC Probing System

InfiniiMax RCRC Probing System

The new InfiniiMax 4 series probing system is a groundbreaking solution designed to deliver unparalleled signal fidelity and accuracy with bandwidth capabilities reaching up to 52 GHz, all while maintaining exceptionally low loading. With the InfiniiMax III/III+ probe amplifiers, this advanced InfiniiMax RCRC probe system ensures swift and reliable measurements ranging from 8 GHz to 52 GHz, setting a new standard in probing technology.

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Application Notes 2023.03.12

Probe Soldering Guidelines for Keysight InfiniiMax Probes

Probe Soldering Guidelines for Keysight InfiniiMax Probes

There are various ways to connect test instrumentation probes to devices under test (DUTs). One such method is soldering, which provides a reliable connection and minimizes parasitic probing effects by keeping wire lengths and connections as short as possible. Many of Keysight’s high performance oscilloscope probes utilize soldered connections. As probes and devices continue to shrink, using the correct tools and soldering skills becomes even more critical in order to avoid damage and connectivity issues. This guide provides helpful tips, recommended tools, and techniques specific to Keysight probes to help test engineers make the most out of their soldered-in probes and connections.

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N2830/1/2A and N7000/1/2/3A InfiniiMax III+ Probes User Guide

N2830/1/2A and N7000/1/2/3A InfiniiMax III+ Probes User Guide

This document contains information about the InfiniiMax III and III+ Probing System.

2023.02.09

Quick Start Guides 2014.03.31

N2830A Series InfiniiMax III+ Probes Configuration Card

N2830A Series InfiniiMax III+ Probes Configuration Card

This card shows the recommended probe head configurations for the InfiniiMax III+ probing system. It also includes additional information and tips.

2014.03.31

Data Sheets 2024.06.25

Infiniium Oscilloscope Probes and Accessories

Infiniium Oscilloscope Probes and Accessories

To get the most out of your Keysight Infiniium oscilloscope, you need the right probes and accessories for your particular applications. Whether you need the high bandwidth and low loading of an active probe, an easy way to connect to surface mount ICs, or a passive probe to measure high voltages, there’s a wide selection of high-quality probes and accessories for your Infiniium oscilloscope. The Infiniium probes and accessories data sheet provides you the overview of all probes and accessories recommended for Infiniium oscilloscopes.

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Application Notes 2018.06.20

Bandwidth Boosting Techniques for the Infiniimax Probe Amp and Probe Head

Bandwidth Boosting Techniques for the Infiniimax Probe Amp and Probe Head

Keysight InfiniiMax differential probes are DSP corrected to have a flat magnitude and phase response to provide the highest possible accuracy. The bandwidth chosen to correct to is typically around 3dB non-corrected bandwidth. Usually, extending the bandwidth much beyond that point will increase the noise floor, and if pushed even further, can cause unrealistic noise artifacts. This application note presents the techniques used to extend the bandwidth performance of the InfiniiMax 1169A/B and the N5381A/B solder-in head using the PrecisionProbe application on Infiniium realtime oscilloscope.

2018.06.20

User Manuals 2014.04.14

N2830A-Series Differential InfiniiMax III + Probes Handling Guide

N2830A-Series Differential InfiniiMax III + Probes Handling Guide

This guide describes proper handling techniques for the N2830A-Series probes.

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Oscilloscope Probes Selection Guide

Oscilloscope Probes Selection Guide

Keysight offers a broad range of voltage, current, and optical probing solutions for InfiniiVision and Infiniium Series oscilloscopes.
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