# GW Instek GSP-9300B 3 GHz Spectrum Analyzer (Pre-Owned) # GW Instek GSP-9300B 3 GHz Spectrum Analyzer (Pre-Owned) ## Key Features At A Glance - 9 kHz to 3 GHz frequency range with 0.025 ppm frequency stability and a 1 ppm/year aging rate - Built-in preamplifier yields -149 dBm/Hz displayed average noise level with preamp on for small-signal RF work - Over 20 built-in measurement applications: AM/FM demod, channel power, ACPR, SEM, TOI, CNR, CTB, CSO, phase noise - RBW selectable 1 Hz to 1 MHz in a 1-3-10 sequence with a built-in 0-50 dB attenuator in 1 dB steps - Spectrogram, Topographic, and Dual-View split-window display modes for continuous signal monitoring - LAN, USB, and RS-232 remote control standard; GPIB (IEEE-488) interface available as an option - Optional tracking generator (100 kHz-3 GHz) enables frequency-response and power-linearity component testing - Compact 4.5 kg chassis with an optional Li-Ion battery pack supports portable field testing The GSP-9300B is a 3 GHz spectrum analyzer built to meet basic RF measurement requirements. A spectrum analyzer resolves a signal into its individual frequency components, displaying amplitude versus frequency so an engineer can see exactly where energy sits across the band and how stable it is. The GSP-9300B delivers frequency stability of 0.025 ppm and an aging rate of 1 ppm per year, figures normally associated with high-end test equipment, together with a built-in preamplifier and more than twenty measurement applications. It is a stable, light, all-purpose instrument positioned for the educational market, production lines, and general signal-monitoring use. Listed applications span the quick check and analysis of spectral characteristics, analysis of AM and FM signal characteristics, monitoring of satellite uplink signals from a satellite uplink truck, and deployment in test systems that require a very compact instrument. With the tracking generator option, the GSP-9300B can measure the frequency response of cables, attenuators, filters, and amplifiers. Production-line features such as auto wake-up, a sequence function, and limit-line testing make it well suited to repeatable manufacturing test, while its size and weight support both field testing and integration into automated test systems. ValueTronics stocks and holds its own inventory in a 20,000 square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit that moves through our facility is inspected and functionally verified by our team before it ships, while new units leave the warehouse factory-sealed exactly as received from the manufacturer. Holding inventory under our own roof lets us confirm what is on the shelf, control fulfillment timelines, and stand behind each instrument we sell. ## Compare Other Models in This Series The GSP-9300B is offered as a single 3 GHz spectrum analyzer platform that buyers configure through factory options rather than as a tiered family of distinct bandwidth models. Every unit shares the same core: a 9 kHz to 3 GHz range, 0.025 ppm frequency stability, a built-in preamplifier, a 0-50 dB attenuator, and more than twenty standard measurement applications. What changes between configurations is the option content: a tracking generator for component frequency-response and power-linearity testing, a GPIB interface for bus control, and a battery pack for portable operation. The comparison below lays out how the available builds differ so a buyer can match the configuration to the application. Each pre-owned GSP-9300B configuration below is its own dedicated product page with condition-matched pricing. Selecting the page that matches the build and condition you need ensures the price and the included options reflect that specific unit. The base GSP-9300B includes the spectrum analyzer, power cord, certificate of calibration, and software CD-ROM. From there, three factory options define the available builds: Opt.01 adds the tracking generator (100 kHz to 3 GHz, output -50 dBm to 0 dBm in 0.5 dB steps), Opt.02 adds the Li-Ion battery pack (DC 10.8 V, 5200 mAh / 56 Wh), and Opt.03 adds the GPIB interface. A fully loaded build carrying all options, the tracking generator, GPIB, and battery, is identified by the GSP-9300BGD1DH ordering code. The comparison table that follows shows which options each configuration carries so the build can be matched to the measurement and automation requirements at hand. Model Frequency Range RBW Frequency Stability **GSP-9300B** 9 kHz ~ 3 GHz 1 Hz ~ 1 MHz 0.025 ppm GSP-9300BGD1DH 9 kHz ~ 3 GHz 1 Hz ~ 1 MHz 0.025 ppm Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Power Cord - Certificate of Calibration - CD-ROM (with Quick Start Guide, User Manual, Programming Manual, SpectrumShot Software, SpectrumShot Guide & IVI Driver) ## Product Core & Specifications Specification Value Frequency Range 9 kHz ~ 3 GHz Resolution 1 Hz Accuracy ±(period since last adjustment × aging rate) + stability over temperature + supply voltage stability Frequency Reference Aging Rate (1 year after last adjustment) ± 1 ppm max. Frequency Stability Over Temperature (0 ~ 50 °C) ± 0.025 ppm Supply Voltage Stability ± 0.02 ppm Frequency Readout Accuracy Start, Stop, Center, Marker ±(marker frequency indication × frequency reference accuracy + 10% × RBW + frequency resolution) Trace Points Max. 601 points, Min. 6 points Resolution 1 Hz, 10 Hz, 100 Hz, 1 kHz Marker Frequency Counter Accuracy ±(marker frequency indication × frequency reference accuracy + counter resolution); RBW/Span ≥ 0.02; Mkr level to DNL > 30 dB Frequency Span Range 0 Hz (zero span), 100 Hz ~ 3 GHz Resolution 1 Hz Accuracy ± frequency resolution Phase Noise (RBW: Auto) 10 kHz offset from carrier < -88 dBc/Hz 100 kHz offset from carrier < -95 dBc/Hz 1 MHz offset from carrier < -113 dBc/Hz Resolution Bandwidth (RBW) Filter Filter Bandwidth (-3 dB) 1 Hz ~ 1 MHz in 1-3-10 sequence Filter Bandwidth (-6 dB), Nominal 200 Hz, 9 kHz, 120 kHz, 1 MHz Accuracy ± 8%, RBW = 1 MHz; ± 5%, RBW < 1 MHz Shape Factor (-60 dB : -3 dB) < 4.5 : 1 Video Bandwidth (VBW) Filter Filter Bandwidth 1 Hz ~ 1 MHz in 1-3-10 sequence Amplitude Range Measurement Range (100 kHz ~ 1 MHz) DANL to 18 dBm Measurement Range (1 MHz ~ 10 MHz) DANL to 21 dBm Measurement Range (10 MHz ~ 3 GHz) DANL to 30 dBm Attenuator Input Attenuator Range 0 ~ 50 dB, in 1 dB steps Setup Auto or manual; Mixer power level (dBm) = input power (dBm) − attenuation (dB) Maximum Safe Input Level Average Total Power +33 dBm DC Voltage ± 50 V 1 dB Gain Compression Total Power at 1st Mixer (Input attenuator 10 dB; Typical; Fc ≥ 50 MHz; preamp off) \> 0 dBm Total Power at the Preamp (Typical; Fc ≥ 50 MHz; preamp on) \> -22 dBm Displayed Average Noise Level (DANL) (0 dB attenuation; RF input terminated with 50 Ω load; RBW 10 Hz; VBW 10 Hz; span 500 Hz; reference level = -60 dBm; trace average 40) Preamp Off, 9 kHz ~ 100 kHz < -93 dBm Preamp Off, 100 kHz ~ 1 MHz < -90 dBm − 3 × (f/100 kHz) dB Preamp Off, 1 MHz ~ 10 MHz < -122 dBm Preamp Off, 2.7 ~ 3.25 GHz < -116 dBm Preamp On, 100 kHz ~ 1 MHz < -108 dBm − 3 × (f/100 kHz) dB Preamp On, 1 MHz ~ 10 MHz < -142 dBm Preamp On, 10 MHz ~ 3.25 GHz < -142 dBm + 3 × (f/1 GHz) dB Level Display Range Scales Log, Linear Log scale Single/Split Windows Level Display Modes Trace, Topographic, Spectrogram Number of Traces 4 Detector Positive-peak, negative-peak, sample, normal, RMS (not Video), Quasi-Peak (EMI), Average (EMI), Clear & Write, Max/Min Hold, View, Blank, Average Marker Level Readout 0.01 % of reference level Units dBm, dBmV, dBuV, V, W Absolute Amplitude Accuracy (Center = 160 MHz; RBW 10 kHz; VBW 1 kHz; span 100 kHz; log scale; 1 dB/div; peak detector; 23 °C ± 1 °C; signal at reference level) Preamp Off (Ref level 0 dBm; 10 dB RF attenuation) ± 0.3 dB Preamp On (Ref level 0 dBm; -30 dB RF attenuation) ± 0.4 dB Frequency Response (Reference: 160 MHz; 20 ~ 30 °C) Preamp Off, 100 kHz ~ 2.0 GHz (10 dB attenuation) ± 0.5 dB Preamp Off, 2 GHz ~ 3 GHz (10 dB attenuation) ± 0.7 dB Preamp On, 1 MHz ~ 2 GHz (0 dB attenuation) ± 0.6 dB Preamp On, 2 GHz ~ 3 GHz (0 dB attenuation) ± 0.8 dB Amplitude Uncertainty Attenuation Switching Uncertainty (0 ~ 50 dB in 1 dB step; Reference: 160 MHz, 10 dB attenuation) ± 0.25 dB RBW Filter Switching Uncertainty (1 Hz ~ 1 MHz; Reference: 10 kHz RBW) ± 0.25 dB Overall Amplitude Accuracy ± 1.5 dB Level Measurement Uncertainty (20 ~ 30 °C; frequency > 1 MHz; signal input 0 ~ -50 dBm; reference level 0 ~ -50 dBm; input attenuation 10 dB; RBW 1 kHz; VBW 1 kHz; after cal; Preamp Off) ± 0.5 dB Spurious Response Second Harmonic Intercept (Typical; 10 MHz < fc < 775 MHz) +35 dBm Second Harmonic Intercept (Typical; 775 MHz ≤ fc < 1.625 GHz) +60 dBm Third-order Intercept (Typical; 300 MHz ~ 3 GHz; input signal level -30 dBm, Att Mode, Att = 0 dB; 20 ~ 30 °C) \> 1 dBm Input Related Spurious (signal input -30 dBm; 0 dB attenuation; preamp off) < -60 dBc Residual Response (Inherent) (input terminated; 0 dB attenuation; preamp off) < -90 dBm Sweep Sweep Time Range (Span > 0 Hz) 204 µs ~ 1000 s Sweep Time Range (Span = 0 Hz; Min resolution = 10 µs) 50 µs ~ 1000 s Sweep Mode Continuous; Single Trigger Source Free run; Video; External > **Important:** Maximum safe input level: +33 dBm average total power and +/-50 V DC. > **Important:** Specifications apply when the GSP-9300B is powered on for at least 30 minutes to warm up to a temperature of 20 °C to 30 °C, unless otherwise specified. > Recommended pairing: combine the GKT-008 EMI Near Field Probe Set with the unit's built-in EMI filter to conduct EMI tests and debugging. ## 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 - **Vendor:** GW Instek - **Type:** Spec An - **Tags:** Analyzers, Instek, Manufacturers, product_manual_group_3, Product_used, Spectrum ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 0.00 USD | In stock | ## Images - GW Instek GSP-9300B 3 GHz Spectrum Analyzer (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/gsp-9300b-instek-spectrum-analyzer-used) > Updated: 2026-06-20