# Rohde & Schwarz FS300 9 kHz to 3 GHz Spectrum Analyzer # Rohde & Schwarz FS300 9 kHz to 3 GHz Spectrum Analyzer ## Key Features At A Glance - Frequency range 9 kHz to 3 GHz with digital frequency processing - 16 digitally implemented resolution bandwidths from 200 Hz to 1 MHz (1, 2, 3, 5 sequences) - Displayed average noise level typ. -120 dBm (300 Hz RBW) for detecting weak signals - Built-in frequency counter with 1 Hz resolution - Maximum input level up to +33 dBm (50 MHz to 3 GHz) - Remote control via USB interface with supplied Windows 2000/XP driver - 5.4-inch active TFT colour display, 320 x 240 pixels - Level measurement uncertainty <=1.5 dB The R&S FS300 is a spectrum analyzer covering a frequency range of 9 kHz to 3 GHz. Using a modern, digital frequency processing technique, it delivers high measurement quality at a favourable price. It is built as a versatile instrument for comprehensive measurements on the lab bench, in service, and as a flexible measuring instrument in automatic production systems. The instrument addresses several measurement applications: measurement of RF spectrum (level and frequency), measurement of radiated interference (EMC), time-domain measurement, and radiomonitoring remote-controlled via USB. Operation is menu-guided with clear menu structures, so that even untrained users can quickly obtain correct results, while users already familiar with Rohde & Schwarz spectrum analyzers will recognize the menu items from other Rohde & Schwarz instruments. ValueTronics keeps its inventory under its own roof, holding and stocking equipment in a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. ## Accessories Supplied - Windows 2000/XP-compatible USB driver ## Product Core & Specifications Specification Value Frequency Frequency range 9 kHz to 3 GHz Reference frequency, Aging 2 x 10–6 / year Reference frequency, Temperature drift 1 x 10–6 (5° C to 30° C) Frequency counter, Resolution 1 Hz, 10 Hz, 100 Hz, 1 kHz Frequency span 1 kHz to 3 GHz, 0 Hz Spectral purity SSB phase noise (10 kHz carrier offset) <–90 dBc (1 Hz) Residual FM (1 kHz resolution bandwidth, 1 kHz video bandwidth) <100 Hz, typ. 60 Hz Sweep time Span ≥ 1 kHz 100 ms to 1000 s Span = 0 Hz 100 µs to 20 s Bandwidths Resolution bandwidths (–3 dB) 200 Hz to 1 MHz in 1, 2, 3, 5 sequences Video bandwidths 10 Hz to 1 MHz in 1, 2, 3, 5 sequences Amplitude Level measurement range \>137 dB Max. input level, 50 MHz to 3 GHz +33 dBm Max. input level, 10 MHz to 50 MHz +26 dBm Max. input level, 9 kHz to 10 MHz +20 dBm Intermodulation-free range, 1 MHz to 100 MHz (two-tone signal with 2 x –30 dBm, 6 dB input attenuation) ≤ –60 dBc Intermodulation-free range, 100 MHz to 3 GHz ≤ –70 dBc Harmonics (–40 dBm, 0 dB input attenuation) ≤ –60 dBc Inherent spurious responses (terminated input, 0 dB input attenuation) ≤ –85 dBm Other spurious (10 MHz to 3 GHz, –30 dBm level at first mixer) ≤ –60 dBc Displayed average noise level (300 Hz resolution bandwidth, 10 Hz video bandwidth, 0 dB input attenuation) ≤ –110 dBm, typ. –120 dBm 1 dB compression point of first mixer (100 kHz to 3 GHz, 0 dB input attenuation) –10 dBm Setting range of reference level –110 dBm to +36 dBm RF input attenuation range 0 dB to 70 dB in 2 dB steps, manual selection or automatic coupling to reference level Display range 80 dB, 40 dB, 16 dB, 8 dB, linear Display units, Logarithmic dBm, dBµV, dBmV Display units, Linear V, W Traces 1 active trace and 1 stored trace Level measurement uncertainty ≤1.5 dB Markers Marker 1 marker and 1 delta marker Marker functions peak, next peak, marker to center, marker to reference Marker display normal, delta, noise marker, frequency counter Trigger free run, video, external, line Inputs RF input, Connector N female Input impedance 50 Ω VSWR (10 MHz to 3 GHz, input attenuation ≥ 20 dB) <1.5 Max. input level (with 30 dB input attenuation) +33 dBm Max. DC voltage 30 V External trigger input, Connector BNC female Trigger voltage TTL voltages Reference frequency input, Connector BNC female Reference frequency 10 MHz ± 50 Hz Input voltage 0.5 V to 2 V at 50 Ω Output Reference frequency output, Connector BNC female Reference frequency 10 MHz Output voltage \>0.5 V at 50 Ω Interfaces USB-Host, Connector A plug USB-Host, Protocol Version 1.1 USB-Host, Command set device-specific, remote control via supplied Windows driver (Windows XP, 2000) USB interface, Connector B plug USB interface, Protocol Version 1.1 General data Display, Type 5.4" active TFT colour display Display, Resolution 320 x 240 pixels Memory locations, Traces 5 Memory locations, Device setups 10 Permissible temperature range (meets DIN EN 60068-2-1/2) +5° C to +45° C Storage temperature range –20° C to +70° C Rel. humidity (meets DIN EN 60068-2-3, non-condensing) 95% at +40° C Mechanical resistance, Sinusoidal vibration (meets DIN EN 60068-2-6, DIN EN 61010-1 and MIL-T-28800D class 5) 5 Hz to 150 Hz, max. 2 g at 55 Hz, 55 Hz to 150 Hz: 0.5 g constant Mechanical resistance, Random vibration (meets DIN EN 60068-2-64) 10 Hz to 500 Hz: 1.9 g Mechanical resistance, Shock (meets DIN EN 60068-2-27 and MIL-STD-810) shock spectrum Electromagnetic compatibility meets EN 555011 class B and EN 61326 (EMC Directive 89/336/EEC) EMI field strength 10 V/m Safety class DIN EN 61010-1 / IEC61010-1 UL3111-1; CSA22.2 No:1010.1 Dimensions (W x H x D) 219 mm x 147 mm x 350 mm Weight approx. 7.4 kg Power supply, Input voltage range 100 V to 240 V (AC), 50 Hz to 60 Hz, autoranging Power supply, Power consumption <35 VA > **Important:** Maximum input level: +33 dBm (50 MHz to 3 GHz), +26 dBm (10 MHz to 50 MHz), +20 dBm (9 kHz to 10 MHz). Maximum DC voltage: 30 V. > **Important:** Important: As a highly innovative company, we continuously refine our products. Please check the manufacturer homepage (www.fs300.rohde-schwarz.com) for new applications and features. > Recommended pairing: add the R&S FS300-K1 PC software for USB-based remote control and test-report generation, or the R&S ZZA-300 rack adapter for 19-inch rack installation. ## About this New unit 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.** ## Details - **Price:** 7000.0 USD - **Vendor:** Rohde & Schwarz - **Type:** Spec An - **Tags:** Buy New Equipment AVADA, Manufacturers, New, Optional, Other Equipment, Product new, product_manual_group_3, Product_new, Rohde, Rohde & Schwarz, spec ana, Spectrum, spectrum analyzers ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 7000.00 USD | In stock | ## Images - Rohde & Schwarz FS300 9 kHz to 3 GHz Spectrum Analyzer --- > Source: [ValueTronics](https://valuetronics.com/products/fs300-new-rohdes-unassigned-new) > Updated: 2026-06-20