InfiniiVision 3000T X-Series Oscilloscope MSOX3034 - Review

Table of contents

RoadTest: InfiniiVision 3000T X-Series Oscilloscope MSOX3034

Author: Attila Tőkés

Creation date:

Evaluation Type: Test Equipment

Did you receive all parts the manufacturer stated would be included in the package?: True

What other parts do you consider comparable to this product?: Tektronix's 3 MDO Series. Maybe some MSO-s produced by Rohde & Schwarz, Teledyne LeCroy, Pico, GwInstek and B&K Precision.

What were the biggest problems encountered?: Nothing "blocker".

Detailed Review:

Hello Element14 Community,


This is my final review of the Keysight InfiniiVision MSOX3034T mixed signal oscilloscope.


First of all, thanks Keysight and Element 14 for providing me this great instrument! image


Until now, I had a 20 MHz bandwidth Hantek USB oscilloscope. It was usable for low speed projects, but it really hit its limits when I tried to use for higher speed projects. Also, its PC based user interface maybe wasn't the best.


The Keysight InfiniiVision MSOX3034T is an 350 MHz bandwidth mixed signal oscilloscope. It has 4 analog and 16 digital channels, a 5 GSa/s sampling rate, 1 MSa/s waveform update rate, and a built-in function generator.


I'm pretty sure it will be useful in a lot of my future projects. image


1. Road Testing Process / Blog Posts


As a mixed signal oscilloscope is fairly complex instrument, I thought to structure my review in multiple blog posts, each focusing on different feature of the oscilloscope.


I received the about scope about two months ago, and I started the review by an unboxing and quick overview on what was in the box:

Keysight InfiniiVision MSOX3034T RoadTest | Unboxing & First Impressions


Next, we took a look on basic functionality of an oscilloscope, the analog specification of the MSOX3034T, and did some tests with the build-in demo signals of the scope:

Keysight InfiniiVision MSOX3034T RoadTest | Analog Specs & Basic Functionality



This was followed by some experiments with fairly low speed signals. We analyzed a cheap lab power supply, measured the inductance of the PCB based NFC antenna, and took a look on some USB signals:

Keysight InfiniiVision MSOX3034T RoadTest | Low Speed Analog Experiments




Then, we analyzed the digital channels and serial decoding capabilities of the instrument. Along an overview of the specifications, I did some experiments involving SPI / Quad SPI communication between a flash chip and an ESP32, serial communication between an Chipkit Uno32 board and a PC and scanning for I2C devices on connected to an Arduino:

Keysight InfiniiVision MSOX3034T RoadTest | Digital Channels & Serial Decoding



In the fifth blog post, I attempted to measure the bandwidth and update rate of the oscilloscope. The measurements were done using relatively inexpensive equipment, a portable network analyzer and a multimeter:

Keysight InfiniiVision MSOX3034T RoadTest | Bandwidth & Update Rate Measurements



Next, I prepared some experiments to see how well the scope can be used with high speed and RF related work. The experiments included a look on the MIPI CSI 2 communication between a Raspberry Pi and camera module, NFC antenna tuning (again image), looking at the signal produced by HackRF One and analyzing High Speed USB communication:

Keysight InfiniiVision MSOX3034T RoadTest | High Speed & RF Experiments



Finally, we took a look on the Arbitrary Function Generator and other miscellaneous functionality of the scope, such as mirroring the output to an external monitor and controlling the scope over Ethernet.

Keysight InfiniiVision MSOX3034T RoadTest | Function Generator & Other Misc. Functionality




2. Competitive Products


The Keysight InfiniiVision MSOX3034T is a "3000 series" mixed signal oscilloscope. Multiple manufacturers seems to use this "3000 series" terminology, and this usually means an oscilloscope series with a bandwidth in range of 100 MHz - 1GHz, a sample rate of a 1-5 GSa/s, and support for both analog and digital channels. Additional features like arbitrary waveform generator, spectrum analyzer and / or voltmeter & frequency counter are also common in these products.


The Keysight's InfiniiVision 3000T series scope's biggest competitor probably is Tektronix's 3 MDO series of mixed domain oscilloscopes.


Now, Tektronix and Keysight also know this, and they keep producing videos, fact sheets, blog posts comparing the two product series. Of course each company is highlighting the strengths of their product (and forgetting about the weaknesses image). It was kind of funny to watch / read these materials image.


So, lets see how the two series compare to each other:

Keysight 3000T seriesTektronix 3 series
Bandwidth100 MHz to 1 GHz100 MHz to 1 GHz
Sample Rate5 GSa/s
(2.5 GSa/s in 2 ch mode)
2.5 GSa/s (100, 200, 350, 500 MHz models)
5 GSa/s (1 GHz model)
Waveform Update Rate1M wfm/s280K wfm/s (Fast Acq mode) / 50 wfm/s (Normal mode)
Analog Channels2 / 42 / 4
Digital Channels16 (optional)16 (optional)
Sample Memory4 MSa / ch with Segmented Memory
(2 Msa / ch in 2 ch mode)
10 MSa / ch
(no Segmented Memory)
Serial DecodingYes, hardwareYes, software
Arbitrary Function GeneratorYes, 0-20 MHz (optional)Yes, 0-50 MHz (optional)
Spectrum AnalyzerNo, just FFT functionalityYes, 9 kHz to 1 GHz
(up to the bandwidth of the model)

up to 3 GHz (upgrade option)
Voltmeter / Frequency CounterYesYes

8.5'' Touch screen (capacitive)

800 x 600 (VGA) resolution

11.6'' Touch screen (capacitive)

1920 x 1080 (Full HD) resolution


Price range: ~4,000 $ - 16,000 $


(350 MHz, 4 + 16 channels):
8.000 € (Farnell, options unclear)
5.700 € (Farnell promo, options unclear)

11.000 $ / 9.300 €
(Keysight's list price, probably outdated, options unclear)
(this was also the invoice price for the full-option unit I received)

Price range: ~4,000 $ - 15,000 $

MDO34 3-BW-350
(350 MHz, 4 channels):

8.350 € (Tektronix, no options)
8.900 € (Farnell, no options)


As we can see Keysight 3000T and Tektronix 3 offer similar performance, and are also similarly priced. Both have analog and digital channels, build-in function generator, voltmeter and frequency counter.


The Keysight 3000T excels with its higher update rate, segmented memory and hardware based serial decoding functionality.

On the other hand the Tektronix 3 offers a bigger and higher resolution screen, has a built in spectrum analyzer and slightly bigger sample memory (although does not support segmenting).


Along the big names, we can also get mixed signal oscilloscopes (in the 0.1-1Ghz range) from manufacturers like Rohde & Schwarz, Teledyne LeCroy, Pico, GwInstek or B&K Precision. Some of these are priced similar to the big names and also offer competitive features. Others target lower price segments while also offering slightly less features.


3. Thoughts & Conclusions


The performance of the Keysight InfiniiVision MSOX3034T is probably one of the best we can get in its price range. It offers the best waveform update rate, very good sampling rate, and a lot of useful features (many of them hardware accelerated).


The user interface of the is most of the times very intuitive. Controlling the scope was easy both with the knobs, buttons and the touch screen.


As additional "extras" we get a arbitrary waveform generator, and a voltmeter & frequency counter.


Overall, I am very pleased with the scope image, but I think, there is some room for improvement too:


The biggest weakness of the scope in my opinion is its display. Yes, it is a capacitive touch screen, but the 800x600 (WGA) resolution is too low for a 8.5-inch display operated from ~0.5m distance (so the interface is in reach of your hands). A higher resolution, maybe slightly bigger display would be better option in my opinion. Also, that VGA output is outdated, and could be replaced with HDMI or DisplayPort. Is anybody still using VGA in 2020? image


I found the touch screen based user interface generally good, most of the time it is easy to use image. But, because the screen is not in-level with the casing, an area of about 5mm along the borders simply can't be comfortably used (and there are buttons there). I know it is a legacy from the MSOX-A non touch screen series, but with touch screen operated devices I like more the ones that are designed properly for touch screen operation.


A slightly more sample memory would be cool, but I think that's a limitation of the MegaZoom IV SoC the scope uses. Not that I found an use case where 4 MSa wouldn't be enough image, but competitors tend to have bigger sample memory (10 MSa, or even 100+ MSa).


A spectrum analyzer would also be a good inclusion in my opinion. The scope has functionality, but although it works it offers just basic RF features.



So, what is my opinion about this scope? Does it worth buying?


I definitely like the Keysight InfiniiVision MSOX3034T, it is a great instrument! image


But, does it worth buying? This probably depends on your budget and needs.


In this price range (if you have that budget image) it will probably be a choose between Keysight InfiniiVision 3000 and the Tektronix 3 series. If you want the best performance, the Keysight is probably better. If you want nice big touch screen, or you work with RF stuff the Tektronix may be better because it has the built-in spectrum analyzer.


For hobby use both the Keysight and the Tek may be a little bit pricy, and may not offer the most value for the price. Depending on you needs, there may better value options from less known manufacturers (ex. GW Instek seem to have some interesting ones).



Hope you enjoyed this Road Test! image

  • Hey ,


    Favorite capabilities? It would definitely be the performance characteristics. It is probably the best you can get in its price range image. I think this matters the most.


    The second thing would be the user interface. The Keysight felt very intuitive most of the times. I did not used a scope with similar capabilities before, so could not really tell what the Keysight does better or worst than others manufacturers.


    On the complaints side the biggest thing was the display, which just feels inferior to what you get on modern devices like smartphones, tablets or better notebooks. The resolution is just too low, you can see this on the screenshots. At a second look, maybe the lack of anti-aliasing on texts also added to this feeling.



  • You make some points about the scope.


    How about some tests to show us the limitations and your favorite capabilities?