RF vector signal analyser

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13 April 2011 Test & Measurement

National Instruments has released the NI PXIe-5665, a 3,6 GHz RF vector signal analyser (VSA) in the PXI form factor.

Its PXI platform facilitates peer-to-peer streaming; includes a flexible multiple input, multiple output (MIMO) architecture for phase-coherent measurements, and offers measurement speeds that are faster than traditional rack-and-stack instruments.

The VSA combines the new PXIe-5603 down-converter with the new PXIe-5653 local oscillator synthesiser and the PXIe-5622, a 150 MSps intermediate frequency (IF) digitiser. This combination creates a solution for spectrum and wideband vector signal measurements over a frequency range from 20 Hz to 3,6 GHz with analysis bandwidths up to 50 MHz. The new VSA features a low phase noise of -129 dBc/Hz at a 10 kHz offset at 800 MHz, an average noise level of -165 dBm/Hz, a third-order intercept point of +24 dBm and absolute amplitude accuracy of ±0,10 dB.

For modulated signal analysis, the VSA’s onboard self-calibration tool makes it possible to achieve an IF amplitude response of ±0,15 dB and IF phase linearity of ±0,1°. This accuracy facilitates error vector magnitude performance of less than 0,21% for a 256-QAM signal. The VSA’s flexible, modular architecture expands to provide phase-coherent acquisition for MIMO test, as well as a 20 GHz/s scan rate and peer-to-peer streaming for efficient spectrum monitoring. Additionally, engineers can operate the PXIe-5665 using its RF list mode function to deterministically step through a user-defined set of RF configurations using internal timing or an external trigger.

Because the PXIe-5665 joins a product line of more than 1500 software-defined PXI modular instruments, engineers can mix and match the VSA with a variety of modules and control an entire automated test system with NI LabVIEW graphical system design software. Engineers also can take full advantage of the VSA’s software-defined performance with RF software toolkits for LabVIEW, LabWindows/CVI and .NET to test the latest RF and wireless communication standards including GSM/EDGE, WCDMA, LTE, WLAN and WiMAX.

For more information contact National Instruments, 0800 203 199, [email protected],

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