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The Rohde & Schwarz R&S FSC is a spectrum analyzer offered in two frequency classes: the R&S FSC3 covering 9 kHz to 3 GHz and the R&S FSC6 covering 9 kHz to 6 GHz. Each class is available with or without an integrated tracking generator, giving four base configurations across the series. The instrument provides 1 Hz frequency resolution, 631 sweep (trace) points, and a 50 ohm N-female RF input.
A spectrum analyzer measures and displays the amplitude of signals across a frequency span, letting an engineer characterize a signal's spectral content, identify harmonics and spurious products, and read levels at points of interest. The R&S FSC presents results on a logarithmic axis selectable from 1/2/5/10/20/50/100 dB across ten divisions, or on a linear 0 % to 100 % axis, with level units selectable as dBm, dBmV, dBuV, V, or W.
ValueTronics International stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. That combination lets us match the right configuration to your application and back it with the service ValueTronics has provided since 1992.
Rohde & Schwarz is an independent, privately held electronics group headquartered in Munich, Germany, and established more than 75 years ago. It has operated under the Rohde & Schwarz name throughout its history, with no major corporate rebranding.
The R&S FSC series is offered in two frequency classes and two output configurations. The R&S FSC3 covers 9 kHz to 3 GHz and the R&S FSC6 covers 9 kHz to 6 GHz, and each is available either as a base analyzer or with an integrated tracking generator.
Across all four configurations the analyzers share the same core architecture: 1 Hz frequency resolution, 631 sweep points, resolution and video bandwidths from 10 Hz to 3 MHz in a 1/3 sequence, the same detector set, and the same LAN, USB, and SCPI remote-control interfaces.
Each new model linked below is its own product page with condition-matched pricing. Select the configuration that fits your frequency coverage and tracking-generator needs, and the page for that model will reflect its new availability and price.
The primary difference between models is upper frequency limit: the R&S FSC3 reaches 3 GHz while the R&S FSC6 reaches 6 GHz. The second difference is the tracking generator, which is present only on the .13 and .16 versions; on those models the generator spans 100 kHz to 3 GHz or 100 kHz to 6 GHz respectively, with 0 dBm nominal output and a 0 dB to 40 dB attenuator.
The R&S FSC-B22 preamplifier is an option available across the series rather than a model-defining feature. Refer to the comparison table for the per-model frequency range, tracking-generator presence, and order numbers as listed in the ordering information.
| Model | Frequency Range | Tracking Generator | Resolution Bandwidth |
|---|---|---|---|
| FSC3 | 9 kHz to 3 GHz | None | 10 Hz to 3 MHz |
| FSC6 | 9 kHz to 6 GHz | None | 10 Hz to 3 MHz |
| FSC6 | 9 kHz to 6 GHz | 100 kHz to 6 GHz | 10 Hz to 3 MHz |
Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.
| Specification | Value |
|---|---|
| Frequency | |
| Frequency range (model .03/.13) | 9 kHz to 3 GHz |
| Frequency range (model .06/.16) | 9 kHz to 6 GHz |
| Frequency resolution | 1 Hz |
| Reference frequency, internal, nominal – Aging per year | 1 × 10–6 |
| Temperature drift, 0 °C to +30 °C | 1 × 10–6 |
| Temperature drift, +30 °C to +50 °C | 3 × 10–6 |
| Achievable initial adjustment accuracy | 5 × 10–7 |
| Total reference uncertainty | (time since last adjustment × aging rate) + temperature drift + calibration accuracy |
| Frequency readout, marker resolution | 0.1 Hz |
| Frequency readout, uncertainty | ±(marker frequency × reference uncertainty + 10 % × resolution bandwidth + ½ (span/(sweep points – 1)) + 1 Hz) |
| Number of sweep (trace) points | 631 |
| Marker tuning frequency step size | span/630 |
| Frequency counter resolution | 0.1 Hz |
| Count uncertainty, S/N > 25 dB | ±(frequency × reference uncertainty + ½ (last digit)) |
| Frequency span | 0 Hz, 10 Hz to 3 GHz/6 GHz |
| Span setting uncertainty | ±span/630 |
| Spectral purity, SSB phase noise (f = 500 MHz, carrier offset 30 kHz) | < –95 dBc (1 Hz), typ. –105 dBc (1 Hz) |
| Spectral purity, SSB phase noise (carrier offset 100 kHz) | < –100 dBc (1 Hz), typ. –110 dBc (1 Hz) |
| Spectral purity, SSB phase noise (carrier offset 1 MHz) | < –120 dBc (1 Hz), typ. –127 dBc (1 Hz) |
| Sweep time | |
| span = 0 Hz | 200 µs to 100 s |
| 10 Hz ≤ span ≤ 600 MHz | 20 ms to 1000 s |
| span > 600 MHz | 20 ms × span/600 MHz to 1000 s |
| Uncertainty, span = 0 Hz | 1 %, nominal |
| Uncertainty, span ≥ 10 Hz | 3 %, nominal |
| Bandwidths | |
| Resolution bandwidths, –3 dB bandwidth | 10 Hz to 3 MHz in 1/3 sequence |
| Bandwidth accuracy, 10 Hz ≤ RBW ≤ 300 kHz | < 5 %, nominal |
| Bandwidth accuracy, RBW > 300 kHz | < 10 %, nominal |
| Selectivity, 60 dB:3 dB | < 5 (Gaussian type filters), nominal |
| Video filters, –3 dB bandwidth | 10 Hz to 3 MHz in 1/3 sequence |
| Level | |
| Display range | displayed noise floor to +30 dBm |
| Max. rated input (RF att ≥ 10 dB), DC voltage | 50 V |
| Max. rated input (RF att ≥ 10 dB), CW RF power | 30 dBm (= 1 W) |
| Max. rated input (RF att ≥ 10 dB), Peak RF power (< 3 s duration) | 33 dBm (= 2 W) |
| Max. rated input (RF att ≥ 10 dB), Max. pulse voltage | 150 V |
| Max. rated input (RF att ≥ 10 dB), Max. pulse energy (pulse width 10 µs) | 10 mWs |
| Max. rated input (RF att < 10 dB), DC voltage | 50 V |
| Max. rated input (RF att < 10 dB), CW RF power | 20 dBm (= 100 mW) |
| Max. rated input (RF att < 10 dB), Peak RF power (< 3 s duration) | 23 dBm (= 200 mW) |
| Max. rated input (RF att < 10 dB), Max. pulse voltage | 50 V |
| Max. rated input (RF att < 10 dB), Max. pulse energy (pulse width 10 µs) | 1 mWs |
| TOI, nominal (2 × –20 dBm, RF att = 0 dB, preamp OFF), fin < 300 MHz | > 54 dBc (TOI > +7 dBm, typ. +11 dBm) |
| TOI, nominal, 300 MHz ≤ fin < 3.6 GHz | > 60 dBc (TOI > +10 dBm, typ. +15 dBm) |
| TOI, nominal, 3.6 GHz ≤ fin ≤ 6 GHz | > 46 dBc (TOI > +3 dBm, typ. +10 dBm) |
| TOI, nominal (2 × –40 dBm, preamp ON), fin < 300 MHz | > 50 dBc (TOI –15 dBm) |
| TOI, nominal (preamp ON), 300 MHz ≤ fin ≤ 6 GHz | > 56 dBc (TOI –12 dBm) |
| Second harmonic intercept (SHI), nominal (preamp OFF), fin = 20 MHz to 1.5 GHz | +40 dBm |
| SHI, nominal (preamp OFF), fin = 1.5 GHz to 3 GHz | +30 dBm |
| SHI, nominal (preamp ON), fin = 100 MHz to 3 GHz | 0 dBm |
| Displayed average noise level (preamp OFF, RBW = 100 Hz, VBW = 10 Hz, sample detector, normalized to 1 Hz), 9 kHz to 100 kHz | < –108 dBm, typ. –118 dBm |
| DANL (preamp OFF), 100 kHz to 1 MHz | < –115 dBm, typ. –125 dBm |
| DANL (preamp OFF), 1 MHz to 10 MHz | < –136 dBm, typ. –144 dBm |
| DANL (preamp OFF), 10 MHz to 2 GHz | < –141 dBm, typ. –146 dBm |
| DANL (preamp OFF), 2 GHz to 3.6 GHz | < –138 dBm, typ. –143 dBm |
| DANL (preamp OFF), 3.6 GHz to 5 GHz | < –142 dBm, typ. –146 dBm |
| DANL (preamp OFF), 5 GHz to 6 GHz | < –140 dBm, typ. –144 dBm |
| DANL (preamp ON), 100 kHz to 1 MHz | < –133 dBm, typ. –143 dBm |
| DANL (preamp ON), 1 MHz to 10 MHz | < –157 dBm, typ. –161 dBm |
| DANL (preamp ON), 10 MHz to 1 GHz | < –161 dBm, typ. –165 dBm |
| DANL (preamp ON), 1 GHz to 2 GHz | < –159 dBm, typ. –163 dBm |
| DANL (preamp ON), 2 GHz to 5 GHz | < –155 dBm, typ. –159 dBm |
| DANL (preamp ON), 5 GHz to 6 GHz | < –151 dBm, typ. –155 dBm |
| Image frequencies, nominal, fin – 2 × 21.4 MHz | < –70 dBc, typ. –80 dBc |
| Image frequencies, nominal, fin – 2 × 831.4 MHz | < –70 dBc, typ. –90 dBc |
| Image frequencies, nominal, fin – 2 × 4881 MHz | –60 dBc |
| Intermediate frequencies, 21.4 MHz, 831.4 MHz, 4881.4 MHz | –60 dBc, typ. –80 dBc |
| Intermediate frequencies, 8931.4 MHz | –50 dBc |
| Other interfering signals (signal level – RF att < –20 dBm), f ≤ 3.6 GHz, spurious at fin – 2440.7 MHz | < –60 dBc |
| Other interfering signals, 3.6 GHz < f ≤ 6 GHz, spurious at fin – 4465.7 MHz | < –60 dBc |
| Other interfering signals, related to local oscillators, f ≤ 3.6 GHz, Δf < 300 kHz | –60 dBc |
| Other interfering signals, f ≤ 3.6 GHz, Δf ≥ 300 kHz | < –60 dBc |
Important: RF emission is in line with EN 55011 class A. Per the datasheet's class A note, operation in residential, commercial, and business areas or in small-size companies requires additional measures to ensure EN 55011 class B compliance.
Important: A USB memory stick is not supplied. External data storage of more than 5000 instrument settings and traces requires a USB memory stick (a 1 Gbyte stick is referenced); internal flash memory holds more than 256 instrument settings and traces.
Important: The supported R&S NRP-Z power sensors (for average power measurement only) require the R&S NRP-Z4 passive USB adapter cable for operation on the R&S FSC; the adapter is ordered separately.
This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order.
ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
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