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Antennas / Manufacturing/Services / Passive Components / Software & CAD / Test and Measurement

Rohde & Schwarz FSU67 is first spectrum analyzer to cover 20Hz to 67GHz in single sweep

August 28, 2007
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Columbia, MD August 27, 2007 Rohde & Schwarz today announced the R&S FSU67, which extends spectrum analyzer measurement frequency range to 67 GHz from the previous benchmark of 50 GHz, and is the first to cover 20 Hz to 67 GHz in one full-span sweep with a single coaxial input without the need for external harmonic mixers. It is an excellent choice for developers of military radar, communications, electronic warfare, and electronic countermeasures systems, as well as commercial microwave radios, next-generation wireless systems, and automotive collision avoidance systems. To achieve 67 GHz, spectrum analyzers previously required external harmonic mixers that add complexity to the measurement set-up and introduce images and multiple responses that must be eliminated from the displayed results so the signals of interest can be viewed. The R&S FSU67 eliminates the need for these components for measurement frequencies up to 67 GHz, increasing performance and repeatability, and reducing test system complexity and cost. The R&S FSU67 also has an integrated instrument-controlled RF attenuator with a range of 0 to 75 dB in 5-dB steps that eliminates the external manually-operated attenuator required when harmonic mixers are used. The instrument?s reference level range (-130 dBm to +30 dBm) is also much higher than can typically be achieved with harmonic mixers. The R&S FSU67 is the latest member of the company?s R&S FSU spectrum analyzer family, which includes models with measurement frequencies from 20 Hz to 3.6, 8, 26.5, 46, and 50 GHz. It embodies the Rohde & Schwarz philosophy of functional commonality between instruments within families. As a result, it is compatible with other instruments in the R&S FSU family and other Rohde & Schwarz spectrum analyzers, and the test routines created for other spectrum analyzers and signal analyzers can be used on the R&S FSU67 as well. In addition to use in research and development environments, the R&S FSU67 is well suited for use on the production line. It provides both high measurement speed and signal purity along with IEEE-488 or Ethernet LAN connectivity. The instrument is also certified compliant with LXI (LAN eXtension for Instruments) Class C, the LAN-based successor to the IEEE-488 instrumentation bus. The R&S FSU67 can make 80 measurements/s in manual mode and 70 measurements/s over the IEEE-488 bus, giving it the ability to increase production throughput. The instrument will also control external signal generators via IEEE-488 or TTL bus to act as tracking sources for making scalar transmission, loss, and reflection measurements. Screen contents can be saved as .bmp or .wmf files and imported into word processing documents, or as .csv files for incorporation into spreadsheets. The instrument has USB interfaces that allow firmware updates and other files to be imported from an external flash memory device, hard drive, or CD-ROM, and provides access for a mouse and keyboard. Specifications for the R&S FSU67 include a noise floor of -158 dBm at 1 GHz and -130 dBm at 65 GHz, resolution bandwidth of 1 Hz to 50 MHz, display linearity of less than 0.1 dB, total measurement uncertainty of less than 0.3 dB, and frequency resolution of 0.01 Hz. Phase noise at 640 MHz ranges from -104 dBc at a 100-Hz offset to -160 dBc at a 10-MHz offset. The R&S FSU67 can perform as a fully-featured RF power meter with instantaneous display of measurement results when coupled with one of the company?s R&S NRP Series power sensors. Sensor calibration factor is automatically applied along with the selected center frequency. In addition, channel and adjacent channel power can be determined with the instrument?s time-domain power analysis capability and channel or RRC filters. AM, FM, and phase measurement demodulation capability are also optionally available for determining frequency deviation and the frequency settling of oscillators. The R&S FSU67 can be outfitted as an automated phase noise measurement system, determining residual FM from phase noise characteristics. Noise figure measurement is optionally available as well, which combined with the instrument?s linearity and calibrated power measurement routines eliminates the need for a separate noise figure meter. A comprehensive array of tools is available for performing signal analysis, including a third-order intercept marker, noise and phase noise marker, CCDF measurement, split-screen mode, a peak list marker for spurious signal searches, as well as spurious and harmonic emission testing. A wide variety of filters are available, including sweep filters from 10 Hz to 50 MHz, FFT filters from 1 Hz to 30 kHz, and channel filters from 100 Hz to 5 MHz. For EMI applications, 6-dB-bandwidth filters addressing commercial and military applications are available. These include the 200 Hz, 9 kHz, and 120 kHz commercial application filters, as well as 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, and 1 MHz filters addressing MIL-STD testing requirements. Minimum and maximum peak, auto peak, sample, average, quasi-peak, CISPR-AV, and CISPR-RMS detectors are available as well. Options for the R&D FSU67 include a low-aging-rate, oven-controlled crystal oscillator, external generator control, configurations for challenging environmental conditions, a broadband demodulator output, and a trigger port. LO and IF ports can also be specified to add harmonic mixers for increasing the instrument?s measurement range to 110 GHz. The R&S FSU67 spectrum analyzer is available now from Rohde & Schwarz.

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