Keysight Technologies Introduces Next-Generation Phase Coherent PXIe Multi-Channel Vector Signal Analyzer and Generator for True 8x8 MIMO and Beamforming Tests

SANTA ROSA, Calif. — Keysight Technologies, Inc. (NYSE: KEYS) today introduced a multi-channel phase coherent M9391A PXIe vector signal analyzer (VSA) and M9381A PXIe vector signal generator (VSG) for characterization and test of the latest wireless designs requiring multiple time-synchronized or phase coherent channels. These new capabilities address rapidly evolving wireless technology challenges, including the ability to validate critical multi-antenna techniques, such as diversity, carrier aggregation, 8x8 multiple-input, multiple-output (MIMO) spatial multiplexing and beamforming, used in the development and verification of next generation cellular, wireless connectivity and 5G devices.

Keysight also introduced the LTE/LTE-Advanced Multi-Channel Reference Solution that combines multiple phase coherent PXI VSAs and VSGs, available in 2-, 4- or 8-channel configurations, with Keysight's industry-leading application software, multi-channel configuration and calibration tools. The Reference Solution brings together hardware and software, enabling engineers to accelerate test set up and gain deeper insight into complex LTE and LTE-Advanced designs. Independently tuned channels support inter-band carrier aggregation and simultaneous uplink and downlink measurements, while 160 MHz modulation and analysis bandwidth address intra-band carrier aggregation.

"The 8-channel phase coherent PXI VSA and VSG provide cutting-edge capabilities customers need to improve wireless system data rates and signal quality," said Keysight's Mario Narduzzi, marketing manager, Software and Modular Solutions Division. "The new Reference Solution speeds implementation of LTE and LTE-Advanced tests and takes the guesswork out of configuring the multi-channel hardware and software, ultimately providing confidence in the measurement results."

Using the flexibility of a truly modular platform, the PXI VSA and VSG deliver channel-to-channel phase coherence by sharing a single local oscillator to achieve better than 1-degree phase jitter between channels. PXI backplane triggering is used to enable superior timing alignment of less than 1 ns across channels. A novel, patent-pending correction technique enables fast, accurate time and phase alignment between channels, even in the presence of external cabling and connectors.

Engineers can use Keysight's Signal Studio and 89600 VSA software to generate and analyze up to 8-channel phase coherent signals, providing insight into their latest wireless devices. The software simplifies creation of fully encoded, standard–compliant test signals and enables demodulation and cross-channel measurements to characterize complex MIMO designs.

The compact PXI form-factor accommodates up to four VSAs or VSGs in one 18-slot PXIe chassis and can be scaled to multi-chassis configurations as needed. With hardware capability upgradeable through license keys and Keysight's standard 3-year warranty included, the PXI VSA and VSG provide a future-ready platform for multi-channel test.

U.S. Pricing and Availability

Pricing for the following products and solutions, all available now, is as follows:

M9381A PXIe Vector Signal Analyzer starts at $18,502 per channel

M9391A PXIe Vector Signal Generator starts at $21,474 per channel

Phase coherency option 012 is $1,250 per channel

LTE/LTE-Advanced Multi-Channel Reference Solution is based on specific test system requirements. Contact Keysight at for more information.

Additional information about the phase coherent, multi-channel PXI VSA, PXI VSG and LTE/LTE-A Multi-Channel Reference Solution is available at:

Product and Reference Solution photos are available at

Keysight offers a complete lineup of PXI and AXIe products, including digitizers, arbitrary waveform generators, digitizing oscilloscopes, digital multimeters and a range of switches.

About Keysight Technologies

Keysight Technologies (NYSE:KEYS) is a global electronic measurement technology and market leader helping to transform its customers' measurement experience through innovations in wireless, modular, and software solutions. Keysight's electronic measurement instruments, systems, software and services are used in the design, development, manufacture, installation, deployment and operation of electronic equipment. The business had revenues of $2.9 billion in fiscal year 2014. Information about Keysight is available at


Janet Smith, Americas

+1 970 679 5397

Twitter: @KeysightJSmith

Sarah Calnan, Europe

+44 (118) 927 5101

Connie Wong, Asia

+852 3197-7818

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