FFT application offers sampling rate up to 3.2-GS/s

April 22, 2016 // By PAUL BUCKLEY
Keysight Technologies, Inc. has introduced an improved version of the FFT option, now available on the U5303A PCIe 12-bit high-speed data acquisition card
Keysight Technologies, Inc. has introduced an improved version of the FFT option, now available on the U5303A PCIe 12-bit high-speed data acquisition card. The card features two channels and a sampling rate from 1 GS/s to 3.2 GS/s.

Designed for astronomy, physics applications and environmental measurements requiring frequency domain signal processing, the card allows observation of phenomena never observed before with previous instruments making it a big step forward in terms of linearity, dynamic range and spurious free dynamic range (SFDR) measurements. While providing continuous real-time FFT at full sampling rate, the option also enables spectra accumulation capability, a key requirement for radio-astronomy.

With DC up to 2 GHz bandwidth nominal, the card allows users to convert even low frequencies of around 0 Hz not observable with an AC front-end; moreover, AC coupling would introduce BF noise, whereas DC coupling provides measurement fidelity. By increasing the resolution from 8- to 12-bit, this option provides computation of a 32K points FFT for single or dual channels. As a result of its low-noise capabilities, the card allows users to detect phenomena difficult to observe, such as tilted fibers in solar burst. Additionally, in a controlled environment, this application can run at altitude of 15,000 feet.

The application option comes with a dedicated FFT spectrometer graphic user interface, allowing fast initial start-up, display and export of the acquired FFT data.

www.keysight.com