# Tektronix RSA3308A DC – 8 GHz Real-time Spectrum Analyzer (Pre-Owned) # Tektronix RSA3308A DC – 8 GHz Real-time Spectrum Analyzer (Pre-Owned) ## Key Features At A Glance - Real-time spectrum analysis seamlessly captures transient, periodic, and intermittent RF signals across the series - Frequency coverage spans 10 MHz to 8 GHz across the family, with DC-start models in the RSA3300A Series - Time-correlated, simultaneous views of time, frequency, and modulation domains, plus spectrogram display - Built-in AM, ASK, FM, FSK, and PM demodulators for signal modulation analysis - Frequency Mask Trigger on the RSA3300A Series captures fast, transient, or intermittent signals (available only from Tektronix) - GPIB (IEEE 488.2), 10/100 Base-T LAN, and USB 1.1 interfaces for automated measurement systems - Optional general-purpose digital modulation (vector signal) analysis on the RSA3300A Series (Opt. 21, field-upgradable) - Up to 65.536 Msamples (256 MB) internal memory on the RSA3300A Series with Opt. 02 for analysis over time The Tektronix RSA2200A Series and RSA3300A Series are real-time spectrum analyzers that capture a span of RF frequencies all at one time, seamlessly storing the signal to internal memory. Once captured, a signal can be viewed simultaneously and analyzed in time-correlated frequency, time, and modulation domains. These instruments combine real-time fast-signal capture, internal memory, and modulation analysis with the functionality and operation of a swept spectrum analyzer for looking at very wide spans, all in an integrated, transportable package. The approach captures many signals not viewable on swept spectrum analyzers, letting an engineer characterize a device, system, or signal more completely and rapidly than previously possible. Listed applications include analog and digital modulation signal quality analysis; understanding frequency and spectral occupancy behavior over time; capture and characterization of undesired, unknown, or interfering signals; and device/system design or operational diagnostic measurement. The series is also applied to getting answers to elusive EMI problems, VCO/synthesizer design, RFID device characterization, general-purpose digital modulation vector signal analysis, spectrum monitoring, and radar measurements. The time-correlated multi-domain view is intended to provide a new level of insight about design or operational problems and possible solutions. ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, so the instruments we list are equipment we keep on hand. Every pre-owned unit is handled accordingly: pre-owned units are inspected and functionally verified in-house before they ship, while new units ship factory-sealed exactly as received from the manufacturer. That combination of held inventory and in-house verification on used equipment is how we back each order. ## Compare Other Models in This Series The RSA2200A Series and RSA3300A Series are presented together as a price/performance choice spanning four real-time spectrum analyzer models. All share the core real-time approach: a span of RF frequencies is captured seamlessly to internal memory and then analyzed in time-correlated frequency, time, and modulation domains, with swept spectrum analyzer operation available for very wide spans. Across the family the models differ in frequency range, memory depth, modulation analysis, real-time capture bandwidth, and available triggering modes. The RSA2200A Series provides AM, FM (ASK, FSK), and PM analysis, while the RSA3300A Series adds optional general-purpose digital modulation analysis and the Frequency Mask Trigger. The comparison table below details each model's row. Each pre-owned model below is its own dedicated product page with condition-matched pricing. Select the model whose frequency range, memory depth, and triggering modes match your application, then choose the listing for the condition you need. The clearest differences are frequency range and starting point. The RSA2203A and RSA2208A cover 10 MHz to 3 GHz and 10 MHz to 8 GHz respectively, while the RSA3303A and RSA3308A cover DC to 3 GHz and DC to 8 GHz. Real-time seamless capture bandwidth is 10 MHz on the RSA2200A Series versus 15 MHz on the RSA3300A Series, and standard memory depth is 512 ksamples on the RSA2200A Series versus 16.384 Msamples (65.536 Msamples with Opt. 02) on the RSA3300A Series. Triggering and modulation capability also separate the series. The RSA2200A Series offers free run, single, external, and IF Level triggering, while the RSA3300A Series adds Power (Span BW) and Frequency Mask triggering with Opt. 02. General-purpose digital modulation (vector signal) analysis is available only on the RSA3303A and RSA3308A via Opt. 21. Refer to the comparison table that follows for the exact per-model values. Model Frequency Range Memory Depth Real-time Capture Bandwidth **RSA3308A** DC – 8 GHz 16.384 Msamples; 65.536 Msamples (Opt. 02) 15 MHz RSA2203A 10 MHz – 3 GHz 512 ksamples 10 MHz RSA2208A 10 MHz – 8 GHz 512 ksamples 10 MHz RSA3303A DC – 3 GHz 16.384 Msamples; 65.536 Msamples (Opt. 02) 15 MHz Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - User Manual - Programmers Manual - power cord - USB keyboard - USB mouse - BNC-N adapter ## Product Core & Specifications Specification Value Frequency Frequency Range DC – 8 GHz Frequency Aging ±1 x 10⁻⁷/year Frequency Stability (10 ºC to 40 ºC) 1 x 10⁻⁷ Total Reference Frequency Error 2 x 10⁻⁷ Marker Frequency Readout Accuracy ± (RE x MF + 0.001 x Span + RFM) Hz Carrier Frequency Measurement Accuracy (spans ≤15 MHz) RE x CF + RFM; At 2 GHz ±202 Hz, At 5 GHz ±502 Hz, At 7 GHz ±702 Hz Carrier Frequency Measurement Sensitivity Carrier Power >–40 dBfs (typical) Frequency Span Range (Spectrum Analyzer Mode) 50 Hz to 3 GHz (Start Frequency ≥20 MHz); 50 Hz to 20 MHz (Stop Frequency < 20 MHz) Range (Real-Time Spectrum Analyzer Mode) 100 Hz – 10 MHz, 15 MHz (RF); 20 MHz (Baseband) Range (Time Domain and Demodulation Modes) Span = 0 Hz (simultaneous with 50 Hz to 15 MHz span in second analysis window) Resolution < 0.2% of Span Accuracy ±0.1% of Span Resolution Bandwidth Range 1 Hz to 10 MHz, automatically selected or user defined Accuracy Within 6.0% ±0.1% Shape Characteristic Gaussian, <5:1 Shape Factor (3:60 dB); Rectangular, Nyquist, Root Nyquist shapes may also be selected Noise Bandwidth Range 313.18 mHz to 400.87 kHz Noise Bandwidth Accuracy ±0.1% FFT Performance Number of Samples Per Frame 64 to 8192 (65536 samples / frame, extended resolution) Window types Rectangular, Parzen, Welch, Sine-Lobe, Hanning, Sine-Cubed, Sine-To-The-4th, Hamming, Blackman, Rosenfield, Blackman-Harris 3A, Blackman-Harris 3B, Blackman-Harris 4A, Blackman-Harris 4B, FlatTopn Noise Sidebands, dBc/Hz (at 1 GHz CF) 1 kHz offset ≤–100 (Typical ≤–103) 10 kHz offset ≤–105 (Typical ≤–108) 100 kHz offset ≤–112 (Typical ≤–115) 1 MHz offset ≤–132 (Typical ≤–135) 7 MHz offset ≤–135 (Typical ≤–138) Noise Sidebands, dBc/Hz (at 6 GHz CF) 1 kHz offset ≤–87 (Typical ≤–90) 10 kHz offset ≤–104 (Typical ≤–107) 100 kHz offset ≤–112 (Typical ≤–115) 1 MHz offset ≤–128 (Typical ≤–131) 7 MHz offset ≤–130 (Typical ≤–133) Residual FM at 1 kHz RBW 2 Hzp-p Amplitude Measurement Range Displayed average noise level to MAX safe input Input Attenuator Range 0 – 50 dB, 2 dB steps, DC to 3.5 GHz; 0 – 50 dB, 10 dB steps, 3.5 to 8.0 GHz IQ Input Attenuator Range (Opt. 03) 0–30 dB, 10 dB steps Maximum Safe Input Level (Average Continuous) +30 dBm (RF ATT ≥10 dB) Maximum Safe Input Level (Peak Pulse Power) +30 dBm (RF ATT ≥10 dB) Maximum Safe Input Level (DC) ±0.2 V (CF ≥20 MHz); ±5 V DC – 20 MHz Absolute Amplitude Uncertainty (at Reference Setting) ±0.5 dB (RF) at 50 MHz CF, –20 dBm signal, 0 dB ATT, 20 ºC to 30 ºC Overall Amplitude Accuracy ±0.7 dB (RF) + Frequency Response Reference Level Range –51 to +30 dBm Reference Level Resolution 1 dB Reference Level Accuracy ±0.2 dB (–10 dBm to –50 dBm) at 50 MHz Log Display Range 10 µdB/div to 10 dB/div Displayed Average Noise Level (DANL), Spec dBm/Hz 1 kHz – 10 kHz –144 10 kHz – 10 MHz –151 10 MHz – 100 MHz –151 100 MHz – 1 GHz –151 (Typical with Preamp –164) 1 GHz – 2 GHz –150 (Typical with Preamp –164) 2 GHz – 3 GHz –150 (Typical with Preamp –158) 3 GHz – 5 GHz –142 5 GHz – 8 GHz –142 Frequency Response 100 Hz – 20 MHz ±0.5 dB (Typical ±0.3 dB) 15 MHz – 3 GHz ±1.2 dB (Typical ±0.5 dB) 3 GHz – 3.5 GHz ±1.7 dB (Typical ±0.5 dB) 3.5 GHz – 6.5 GHz ±1.7 dB (Typical ±1.0 dB) 5 GHz – 8 GHz ±1.7 dB (Typical ±1.0 dB) Spurious Responses Third-order Intermodulation Distortion (100 MHz – 3 GHz) < –74 dBc (Ref Level = +5 dBm, RF Att. = 20 dB, total signal power = –7 dBm, signal separation 300 kHz) Third-order Intermodulation Distortion (3 GHz – 8 GHz) < –72 dBc (Ref Level = +5 dBm, RF Att. = 20 dB, total signal power = –7 dBm, signal separation 300 kHz) Other Input-related Spurious \> 30 kHz offset –70 dBc (Span = 2 MHz, Ref Level = 0 dBm, RBW = 50 kHz, Signal Level = –5 dBm, any center frequency) Non-input-Related Spurious (Ref = –30 dBm, RBW = 100 kHz, Span 3 GHz) 1 MHz – 20 MHz: –93 dBm; 20 MHz – 3.5 GHz: –90 dBm; 3.5 GHz – 8 GHz: –85 dBm 1 dB Gain Compression +2 dBm (RF ATT = 0 dB, 2 GHz) Resolution Bandwidth Switching Uncertainty (1 Hz to 10 MHz) ± 0.05 dB Amplitude Reference Output –20 dBm, 50 MHz, internally switched to input RF Input VSWR (10 dB RF Attenuation, typical) 300 kHz – 10 MHz: <1.4; 10 MHz – 3 GHz: <1.3; 3 GHz – 8 GHz: <1.4 > **Important:** Maximum safe input level: +30 dBm average continuous power and +30 dBm peak pulse power (RF attenuation ≥10 dB). > **Important:** Frequency Mask Trigger is available only on the RSA3300A Series (RSA3303A and RSA3308A with Opt. 02); the RSA2200A Series provides IF Level triggering. > **Important:** General Purpose Digital Modulation (Vector Signal) Analysis is available only on the RSA3303A and RSA3308A with Opt. 21 (or via the RSA3UP 21 upgrade). ## 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 - 675.0 USD - **Vendor:** Tektronix - **Type:** Spec An - **Tags:** Analyzers, Manufacturers, product_manual_group_1, Product_used, Spectrum, Tektronix ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 525.00 USD | In stock | | NIST Traceable with Full Data | 600.00 USD | In stock | | ISO IEC 17025 Accredited | 675.00 USD | In stock | ## Images - Tektronix RSA3308A DC – 8 GHz Real-time Spectrum Analyzer (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/rsa3308a-tektronix-spectrum-analyzer-used) > Updated: 2026-06-27