FSW analyzer shows multiple measurements in single window - Embedded.com

FSW analyzer shows multiple measurements in single window

Rohde & Schwarz has developed the FSW signal and spectrum analyzer in three models that cover the frequency ranges 2 Hz to 8 GHz, 13 GHz or 26.5 GHz. It comes with 80 and 160MHz bandwidth versions.

It is seen as the eventual  replacement for the FSU spectrum analyzer and the FSQ signal analyzer and is designed to meet the requirements of development laboratories in the aerospace, defense and communications industries.

The FSU has frequency range of 20 Hz to 67GHz while the FSQ has bandwidth of 120MHz and a 20 Hz to 40 GHz frequency range. Josef Wolf, Director of spectrum and network analyzers at Rohde & Schwarz confirmed that the FSU and FSQ will remain in production for 2 to 3 years and that the FSW's specification will be in expanded in the next 12 to 18 months to match their bandwidth and frequency range.

A 12.1 inch touchscreen enables a MultiView function to display the results of different applications on the touchscreen at the same time, enabling them to keep track of even the most complex signal analyses and find errors. This also eliminates time-consuming switching between measurement applications.


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MultiView function

At 10 kHz carrier offset, the R&S FSW achieves a phase noise specification of less than –137 dBc (1 Hz), which is up to 10 dB less than comparable instruments on the market. This is important for developers of RF components and complete systems for radar applications.

When equipped with the R&S FSW-K6 option, the R&S FSW also supports analysis of pulsed signals, e.g. for radar applications. Its analysis bandwidth of up to 160 MHz allows the R&S FSW to measure wideband, hopping and chirp signals, which makes it ready for the requirements of tomorrow's wireless standards such as the 802.11ac.

Developers can also detect spurious emissions extremely quickly with the R&S FSW thanks to its low inherent noise and its ability to rapidly analyze wide frequency ranges, even when using narrow resolution bandwidths.

Developers of wireless communications base stations and components will be able to make use of the analyzer's 160 MHz demodulation bandwidth and multi-standard radio analysis function. The combination of these two features in a single instrument makes it possible for the first time to simultaneously measure multiple mobile radio and wireless standards at different frequencies.

Users will be able to identify signal interaction among the standards. These measurements are essential for multi-standard base stations of the future and is the reason R&S has integrated the multi-standard radio analyzer into the FSW.


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Multi-standard radio analyzer (MSRA): Signals are captured once, then analyzed to different standards and at different frequencies in parallel.

The RFSW can optionally be equipped with switchable highpass filters (FSW-B13) for carrier frequencies up to 1.5 GHz for harmonic measurements on transmit systems, resulting in a clear improvement of dynamic range over conventional spectrum analyzers. External filters are no longer needed. This facilitates test system setup for GSM, CDMA, WCDMA, LTE and TETRA systems, for example.

The supports the remote control command sets of other Rohde & Schwarz signal and spectrum analyzers, such as those of the FSU and FSQ, as well as those of other manufacturers' instruments via the company's Legacy Pro technology. In most cases replacing an obsolete analyzer with an FSW it is sufficient to verify the FSW's response during a measurement sequence. Reference projects with the FSV or FSU replacing obsolete analyzers prove the efficiency of this approach which can also be used to replace HP/Agilent 8566/68 and 8656X units.

To keep test data confidential, users can exchange the FSW's internal solid state disk (SSD) for another, neutral SSD (FSW-B18 option). The instrument can then be sent in for calibration or any other purpose without any confidential test data leaving the lab. Device-specific alignment data remains in the analyzer, where it is stored separately and independently of the user data.

Rohde & Schwarz

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