To conduct a fast Fourier transform (FFT) analysis, you need instrumentation, but not all are created equal. Some are engineered for flexible field work, while others prioritize precision. You must consider everything from the sampling rate to the dynamic range to find the right fit for your application. You can start by reviewing the top FFT analyzer suppliers.
Selection Criteria for Aerospace FFT Analyzers
An FFT analysis converts dynamic time-domain signals into the frequency domain, enabling you to analyze signal frequency content in depth. In the aerospace industry, you can use it for jet engine diagnostics, vibration surveys, bearing-fault detection, predictive machine health monitoring or mechanical shock response tests.
When looking for an FFT analyzer, you should first consider accuracy, processing speed and usability. How well it measures signal components, handles large datasets and intuitively delivers information can impact your day-to-day duties.
Compatibility, licensing costs and scalability are equally important. Your existing hardware and software ecosystems should connect seamlessly with the new system. It should be easy to adapt your workflows. Modular solutions are often easier to work with. If you plan on sharing data or reports, consider licensing fees.
When evaluating the company behind the products, look for providers that offer technical support, free software updates or online guides. Manufacturing and distribution capabilities also determine product quality and lead times.
What Are the Top Suppliers of FFT Analyzers?
Based on that criteria, here are the best FFT analyzer suppliers for aerospace testing.
Data Physics
Data Physics is the top FFT analyzer supplier and delivers unmatched quality. It manufactures and supplies its own products globally, leading to comprehensive quality control. Its 900 Series Dynamic Signal Analyzer is an all-in-one analyzer and controller capable of real-time analysis and processing. You can use it as a stand-alone system or combine it with other units. It is rugged, lightweight and portable, making it ideal for field or laboratory work.
It has a high dynamic range of 144 decibels (dB) for effective measurement of low-amplitude signals. It also has a channel-to-channel phase accuracy of 0.5 degrees at 40 kilohertz (kHz). The system comprises channel cards, with up to six channels per card. You can reconfigure two as inputs, outputs or tachometers.
The 900 Series software suite unifies all signal analysis and shaker control operations. Since it is built on an SQL database and a 64-bit architecture, it can handle hundreds of thousands of runs. Many features are fully customizable. Even better, you do not need to purchase a separate license for additional computers — multiple computers can share the same database.
The distributed digital signal processor hardware architecture enables stand-alone operation, meaning you can monitor live tests anywhere on the network and operate even without connecting to a computer. You can combine other systems to create a larger unit with over 1,000 channels.
Dewesoft
For real-time vibration and frequency analysis on unlimited input channels, you can use the Dewesoft FFT spectrum analyzer and DewesoftX data acquisition (DAQ) software. There are portable, rack-mounted and benchtop options ranging from one to thousands of channels — all with virtually unlimited input channel configurations.
With a custom selectable line resolution of up to 64,000 lines, these FFT analyzers can handle the aerospace industry’s most demanding tasks. The dual 24-bit delta-sigma analog-to-digital converter with antialiasing filtering achieves a 160 dB dynamic range with a 200 kHz sampling rate per channel.
The analysis seats are unlimited — anyone can review and analyze the data you record by downloading the software for free, no license needed. The base software is free, so you do not have to worry about maintenance fees and contracts. You also receive free technical support and lifetime software updates.
The hardware is equally robust, as demonstrated by the industry-leading seven-year warranty. You can confidently use the portable versions for field testing, even in harsh conditions. If you want a trial run, the supplier can ship a free demonstration unit with no strings attached.
OROS
OROS designs and manufactures noise and vibration testing equipment that meets the aerospace industry’s stringent requirements. You can use these tools for structural testing, jet engine diagnostics or modal analysis. If your applications are nonstandard, it offers customization services. You can tailor instruments and software to your specific needs.
This organization has a worldwide scope, with representatives in over 35 countries. Its magnitude enables it to design, manufacture and test all systems in-house in ISO 9001:2015-certified facilities.
The portable DAQ device is engineered for flexibility and durability during field operations. Its rugged form factor protects it from shock, extreme temperatures and harsh industrial environments. This two- to 32-channel system can link with other equipment to expand the total number to over 1,000 channels.
Ono Sokki
Japan-based Ono Sokki is a leading global manufacturer and supplier of measurement and testing instruments for quality control and research and development. While it primarily supplies the automotive industry, its products are also used in many other sectors.
The CF-9200A is a two-channel system, while the CF-9400B is a four-channel unit. Both are portable FFT analyzers and offer a wide dynamic range of 120 dB. You can simultaneously analyze and record data, enabling offline analysis. By installing a wireless local area network adapter, you can operate the portable system remotely without even touching the main body.
The 10.4-inch color touch panel monitor makes capturing data in the field more convenient. There are also large, built-in hard keys and LED lights, making the interface intuitive and easy to navigate.
This instrument has up to eight continuous hours of battery operation. The two onboard, large-capacity lithium-ion batteries feature hot-swap functionality, allowing you to replace them while the unit is powered on — no need to power off or reset it.
Choosing Instruments for Aerospace Testing
When comparing the top suppliers of FFT analyzers, evaluate their products’ quality, capabilities and performance. Consider factors such as dynamic range, lines of resolution, sampling rate, warranty length and licensing costs. Remember, choosing a good company is just as important as selecting the right instrument.
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