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Rohde & Schwarz FSW43

43 GHz Signal Analyzer, 2.92 mm (m)

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Rohde & Schwarz - FSW43

The Rohde & Schwarz FSW43 is a signal and spectrum analyzer developed for the microwave range. The R&S FSW43 can analyze microwave applications with a frequency range of up to 43.5 GHz, however this range can be extended to 110 GHz with application of the brand's harmonic mixers. The RF performance of the FSW43 makes it useful for wireless, satellite, and radar applications.

FSW43 Product Highlights

• Frequency range from 2 Hz to 43.50 GHz (with external harmonic mixers from Rohde & Schwarz up to 500 GHz)

• Low phase noise of -137 dBc (1 Hz) at 10 kHz offset (1 GHz carrier)

• -88 dBc dynamic range (with noise cancellation) for WCDMA ACLR measurements

• Up to 5 GHz analysis bandwidth

• < 0.4 dB total measurement uncertainty up to 8 GHz

• Real-time analysis up to 512 MHz bandwidth

• High-resolution 12.1%22 (31 cm) touchscreen for convenient operation

• Multiple measurement applications can be run and displayed in parallel

Rohde & Schwarz & TRS-RenTelco

TRS-RenTelco is a proud partner of Rohde & Schwarz and offers a wide range of rental, purchase and leasing solutions designed specifically to meet the evolving needs of the electronic testing industry.  Our close relationship with Rohde & Schwarz allows us to ensure we have the right Spectrum Analyzers solution for your job.

Renting Spectrum Analyzers

With TRS-RenTelco, renting Spectrum Analyzers equipment has never been easier. Enjoy same-day shipping, lease, and finance options on our inventory of over 5000 electronic testing equipment rentals. As one of North America’s largest test equipment rental providers, it is our mission to support the endeavors of our clients no matter how big or small with reliable expertise, excellent customer service, accuracy, and speed.

Links to Additional Information

Rohde & Schwarz Products from TRS-RenTelco

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  • Configurations
  • Resources
  • FAQsAI
--, B320, K70
See Configuration Details
  • B320

    Extension To 320MHz Signal Analysis Bandwidth

  • K70

    Vector Signal Analysis Application, For Modulation Analysis On Digital Modulated Single Carrier Signals

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B10, B1200, B21, B24, B4, B8, K18, K18D
See Configuration Details
  • B4

    OCXO, Precision Frequency Reference. Aging/Year : 3X10E-8, Temperature Drift : 1X10E-9

  • B10

    External Generator Control

  • B1200

    Extension To 1200 MHz Signal Analysis Bandwidth

  • B21

    LO/IF Connections For External Mixers

  • B24

    RF Preamplifier, 30dB, 100kHz To 43GHz

  • B8

    Resolution Bandwidth >10MHz, 20MHz And 50MHz Additionally

  • K18

    Power Amplifier And Envelope Tracking Measurement Application

  • K18D

    Direct DPD Measurement Application

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • Cable 9-Pin(m) - Triple BNC(m)

    Qty: 1
  • Cable RF SMA(m) -SMA(m) 1 m

    Qty: 2
  • Cable Connecting RF B2000 SMA(m) - BNC(m) 36 in

    Qty: 1
  • FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B21, B24, B4, B512, B71, B8
See Configuration Details
  • B21

    LO/IF Connections For External Mixers

  • B24

    RF Preamplifier, 30dB, 100kHz To 43GHz

  • B4

    OCXO, Precision Frequency Reference. Aging/Year : 3X10E-8, Temperature Drift : 1X10E-9

  • B512

    Extension To 512 MHz Signal Analysis Bandwidth Including 200 MHz IF Filter

  • B71

    Analog Base Band Inputs, Analysis Bandwidth 40MHz

  • B8

    Resolution Bandwidth >10MHz, 20MHz And 50MHz Additionally

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • Cable RF SMA(m) -SMA(m) 1 m

    Qty: 2
  • Cable Semi-Rigid Loopback BNC(m)-BNC(m)

    Qty: 1
  • FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B24, K50, K7
See Configuration Details
  • B24

    RF Preamplifier, 30dB, 100kHz To 43GHz

  • K50

    Measurement Application For Detection And Display Of Low Level Spurious Signals

  • K7

    Modulation Analysis Application For Modulation Analysis Of Analog (AM, FM, PM) Modulated Single Carrier Signals

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • void- FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B160, B21, B24, B4, B71, K30, K40
See Configuration Details
  • K30

    Noise Figure Measurement Application, Noise Source Required

  • B160

    Extension To 160MHz Signal Analysis Bandwidth, Includes Microwave Preselector Bypass

  • B21

    LO/IF Connections For External Mixers

  • B24

    RF Preamplifier, 30dB, 100kHz To 43GHz

  • B4

    OCXO, Precision Frequency Reference. Aging/Year : 3X10E-8, Temperature Drift : 1X10E-9

  • B71

    Analog Base Band Inputs, Analysis Bandwidth 40MHz

  • K40

    Phase Noise Measurement Application

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B2000, B21, B24, B4, B512
See Configuration Details
  • B24

    RF Preamplifier, 30dB, 100kHz To 43GHz

  • B2000

    Extension To 2 GHz Signal Analysis Bandwidth Requires An R&STO1044 Or R&SRTO2044 With R&SRTO-B4 OSCilloscope As External Digitizer

  • B21

    LO/IF Connections For External Mixers

  • B4

    OCXO, Precision Frequency Reference. Aging/Year : 3X10E-8, Temperature Drift : 1X10E-9

  • B512

    Extension To 512 MHz Signal Analysis Bandwidth Including 200 MHz IF Filter

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • Cable RF SMA(m) -SMA(m) 1 m

    Qty: 2
  • FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B10, B1200, B21, B24, B4, B8, K145, K30, K40
See Configuration Details
  • B10

    External Generator Control

  • B1200

    Extension To 1200 MHz Signal Analysis Bandwidth

  • B21

    LO/IF Connections For External Mixers

  • B24

    RF Preamplifier, 30dB, 100kHz To 43GHz

  • B4

    OCXO, Precision Frequency Reference. Aging/Year : 3X10E-8, Temperature Drift : 1X10E-9

  • B8

    Resolution Bandwidth >10MHz, 20MHz And 50MHz Additionally

  • K145

    3GPP 5G-NR Uplink Measurement Application IQ Bandwidth > 100 MHz Required

  • K30

    Noise Figure Measurement Application, Noise Source Required

  • K40

    Phase Noise Measurement Application

Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cord Power

    Qty: 1
  • Cable RF SMA(m) -SMA(m) 1 m

    Qty: 2
  • FSW / FSWP MANUALS ON USB DRIVE

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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--, B10, B1200, B21, B24, B4, B8, K18, K70
Standard Rental Accessories*
* Leased or Buy Used product accessories will be confirmed with quote.
  • Cable 9-Pin(m) - 9-Pin(m)

    Qty: 1
  • 2.92 (F-F) ADAPTER

    Qty: 1
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Content is AI-generated. Verify critical details with manufacturer-provided resources.

What is the frequency coverage of the Rohde & Schwarz FSW43 spectrum analyzer?

The R&S FSW43 spans from 2 Hz to 43.5 GHz with DC coupling, or 10 MHz to 43.5 GHz with AC coupling. A YIG preselector provides image-free spectrum analysis for frequencies from 8 GHz upward, ensuring exceptional spurious-free dynamic range and rejection of out-of-band interferers. The sub-Hertz frequency resolution of 0.01 Hz allows detailed characterization of oscillators and synthesizers with high precision.

What analysis bandwidth options are available on the FSW43?

The FSW43 offers scalable analysis bandwidth from 10 MHz standard up to an impressive 5 GHz. Internal bandwidth options include 28 MHz, 40 MHz, 80 MHz, 160 MHz, 320 MHz, 512 MHz, 1200 MHz, and 2000 MHz. The R&S FSW-B5000 option extends capability to 5 GHz analysis bandwidth using an external R&S RTO2064 oscilloscope as a high-performance digitizer, enabling comprehensive analysis of wideband 5G NR, radar, and millimeter-wave signals.

How does the FSW43 phase noise compare to other high-end analyzers?

At a 1 GHz carrier, the FSW43 achieves outstanding phase noise of -109 dBc (1 Hz) at 100 Hz offset (typically -116 dBc), better than -127 dBc (1 Hz) at 1 kHz offset (typically -132 dBc), and better than -139 dBc (1 Hz) at 100 kHz offset (typically -143 dBc). With the optional R&S FSW-B4 OCXO reference, 10 Hz offset performance reaches -95 dBc (1 Hz) specified. This level of phase noise performance outperforms many competing analyzers by more than 10 dB.

What is the displayed average noise level of the FSW43 at millimeter-wave frequencies?

From 8 GHz to 13.6 GHz with YIG preselector on, the FSW43 delivers DANL of -150 dBm (typically -155 dBm) normalized to 1 Hz. From 13.6 GHz to 18 GHz, DANL is -149 dBm (typically -153 dBm). Performance remains strong through the millimeter-wave bands, maintaining -147 dBm (typically -150 dBm) from 18 to 25 GHz. All specifications apply with RF attenuation at 0 dB, 50 ohm termination, and RF preamplifier off.

What are the third-order intercept specifications for the FSW43 above 8 GHz?

With RF attenuation at 0 dB, YIG preselector on, RF preamplifier off, and two tones at -20 dBm each, the FSW43 achieves TOI greater than 8 dBm (typically 11 dBm) from 8 GHz to 13.6 GHz. From 13.6 GHz to 40 GHz, TOI exceeds 10 dBm (typically 15 dBm). Above 40 GHz through the 43.5 GHz upper frequency limit, nominal TOI is 12 dBm, ensuring excellent linearity for multi-carrier and high-power measurements.

Can the FSW43 perform real-time analysis on wideband signals?

Yes, the FSW43 supports real-time spectrum analysis with bandwidths up to 800 MHz when equipped with the R&S FSW-B800R option. Real-time mode delivers 0.46 microsecond probability of intercept and 2.4 million FFT per second processing speed. Users can set frequency-dependent masks to trigger capture of specific signal events, enabling detection of transient emissions, frequency-hopping signals, and short-duration interference for detailed offline analysis.

Does the FSW43 support external mixer measurements beyond 43.5 GHz?

Yes, the FSW43 supports the R&S FSW-B21 LO/IF connections option for use with external harmonic mixers from Rohde & Schwarz. This extends frequency coverage well beyond the 43.5 GHz base specification, enabling measurements up to 500 GHz for applications in millimeter-wave communications, automotive radar at 77 GHz and above, satellite systems operating in V-band and W-band, and advanced scientific research.

What resolution bandwidth choices does the FSW43 offer for wideband signal measurements?

The FSW43 provides resolution bandwidths from 1 Hz to 10 MHz in a 1/2/3/5 sequence as standard, including 3.9 kHz and 6.25 kHz for specific channel spacing requirements. With the optional R&S FSW-B8 enhancement, ultra-wide RBW settings of 20 MHz, 50 MHz, and 80 MHz become available. These wide resolution bandwidths are essential for measuring peak power in UWB systems per regulatory standards and for characterizing wideband modulated signals.

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