# Rohde & Schwarz FSC3 9 kHz to 3 GHz Spectrum Analyzer (Pre-Owned) # Rohde & Schwarz FSC3 9 kHz to 3 GHz Spectrum Analyzer (Pre-Owned) ## Key Features At A Glance - Spectrum analyzer family spanning 9 kHz to 3 GHz (R&S FSC3) and 9 kHz to 6 GHz (R&S FSC6) models - LAN (10/100BaseT, RJ-45), front-panel USB host, rear USB device, and SCPI 1997.0 command set for remote control - Resolution and video bandwidths from 10 Hz to 3 MHz in a 1/3 sequence - Trace detectors include max peak, min peak, auto peak, sample, and RMS - Tracking-generator versions available (R&S FSC3 .13 / R&S FSC6 .16) with 0 dBm output and a 0 dB to 40 dB attenuator - Optional R&S FSC-B22 RF preamplifier (20 dB nominal gain) lowers the displayed average noise level - 14.5 cm (5.7") TFT color display at 640 x 480 pixels, with internal flash and USB memory-stick storage - Maximum rated input of 30 dBm (1 W) CW RF and 50 V DC with RF attenuation 10 dB or greater 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. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units leave factory-sealed exactly as received from the manufacturer. That combination lets us match the right configuration to your application and back it with the service ValueTronics has provided since 1992. ## Brand Heritage 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. ## Compare Other Models in This Series 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 pre-owned 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 pre-owned 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. ## Accessories Supplied - Power cable - USB cable for connection to PC - Quick start guide - CD-ROM (with operating manual and service manual) ## Product Core & Specifications 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 > **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. ## About this Pre-Owned unit This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects. - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). 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.** ## Details - **Price:** 0.0 USD - 980.0 USD - **Vendor:** Rohde & Schwarz - **Type:** Spec An - **Tags:** Analyzers, Manufacturers, product_manual_group_3, Product_used, Rohde & Schwarz, Spectrum ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 595.00 USD | In stock | | NIST Traceable with Full Data | 805.00 USD | In stock | | ISO IEC 17025 Accredited | 980.00 USD | In stock | ## Images - FSC3 Rohde & Schwarz Spectrum Analyzer --- > Source: [ValueTronics](https://valuetronics.com/products/fsc3-rohde-schwarz-spectrum-analyzer-used) > Updated: 2026-06-20