# Tektronix RSA3408B DC to 8 GHz Real-Time Spectrum Analyzer with DPX (Pre-Owned) # Tektronix RSA3408B DC to 8 GHz Real-Time Spectrum Analyzer with DPX (Pre-Owned) ## Key Features At A Glance - DC to 8 GHz frequency range with real-time capture of all signals in spans up to 36 MHz - DPX spectrum processing performs over 48,000 spectrum measurements per second to display RF transients - Frequency Mask Trigger (Opt. 02) captures transients by triggering on any change in the frequency domain - Fully preselected and image-free at all times for full dynamic range at any capture bandwidth - 73 dB Spurious-Free Dynamic Range at 36 MHz maximum capture bandwidth - GPIB (IEEE 488.2), LAN 10/100Base-T, and USB interfaces for automated test and system integration - Up to 1.28 s acquisition length at 36 MHz bandwidth for seamless time-correlated analysis - Optional standards-based analysis (3GPP, GSM/EDGE, CDMA, WLAN) via licensed software options The Tektronix RSA3408B is a DC to 8 GHz Real-Time Spectrum Analyzer (RTSA) that combines the functionality of a high-performance vector signal analyzer, a spectrum analyzer, and a real-time spectrum analyzer in a single package. Its revolutionary DPX spectrum display offers an intuitive live color view of signal transients changing over time in the frequency domain, giving immediate confidence in the stability of a design or instantly displaying a fault when it occurs. Once a problem is discovered with DPX, the instrument can be set to trigger on the event in the frequency domain, capture a continuous time record of changing RF events, and perform time-correlated analysis across all domains. The RSA3408B is applied to RF debug of components, modules, or systems; finding interference and unknown signals in spectrum monitoring and management; analyzing the time-variant behavior of standards-based and other radio systems; field tactical radio transceiver measurements; and characterizing radar and pulsed RF signals. It also provides powerful vector signal analyzer functionality and signal source analysis capability, along with comprehensive analog demodulation and audio distortion measurement for tactical radio and sonar systems. ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, which lets us match the right instrument to an application and ship it promptly. Every pre-owned unit is inspected and functionally verified in-house against the original manufacturer's specifications before it leaves our facility, while new units ship factory-sealed exactly as received from the manufacturer. ## Accessories Supplied - User Manual - Programmer's Manual (On CD) - Power Cord - BNC-N Adapter - USB Keyboard - USB Mouse - Front Cover ## Product Core & Specifications Specification Value Trigger-related Trigger Modes Free run, Triggered (Single or Continuous) Trigger Event Source RF Input, External Trigger Input Trigger Types Power Level; Frequency Mask (Opt. 02) Trigger Position Settable from 0 to 100% of total acquisition length Power Level Trigger – Level Range 0 dBfs to –40 dBfs from reference level Power Level Trigger – Trigger Bandwidth Range 100 Hz to 36 MHz (equal to selected span) Trigger Position Display Timing Uncertainty (Power and External Trigger) ±2 sample points Frequency Mask Trigger (Option 02) Mask Shape User-defined Mask Point Horizontal Resolution 1 bin Level Range 0 to –60 dBfs at 10 dB/div vertical scale Level Accuracy Equal to reference level accuracy + frequency response over 0 to –60 dBfs range Span Range (Start Frequency ≥40 MHz) 100 Hz to 36 MHz Span Range (Start Frequency < 40 MHz) 100 Hz to 40 MHz Minimum Event Duration for 100% Probability of Trigger 20 µs (at maximum acquisition bandwidth) Trigger Position Uncertainty ±2 Frames (For Span = 36 MHz, uncertainty = ±40 µs) External Trigger Level Range –1.5 V to +1.5 V Level Setting Resolution 0.1 V Trigger Position Timing Uncertainty ±2 samples Input Impedance \> 2K Ω (nominal) Trigger Output Voltage HIGH ≥2.0 V; LOW <0.4 V (Output Current <1 mA) Capture-related Real-time Acquisition Bandwidth, maximum (Start Frequency ≥40 MHz, RF) 36 MHz Real-time Acquisition Bandwidth, maximum (Start Frequency <40 MHz, Baseband) 40 MHz Real-time Acquisition Bandwidth, maximum (IQ Inputs, Option 03) 40 MHz A/D Converter 102.4 MS/s, 14 bit Acquisition Memory Size 64 MB (16.4 MSamples) Standard, 256 MB (65.6 MSamples) Opt. 02 Minimum Acquisition Length 1024 Samples Acquisition Length Setting Resolution 1024 Samples Spectrum Mode Display Traces, Detectors and Functions Traces Two traces Detector Max, Min, Max-Min Trace Functions Normal, Average, Max Hold, Min Hold Spectrum Trace Length 801 points (Auto mode) Frequency (RF Performance) Frequency Range DC to 8 GHz Initial Center Frequency Setting Accuracy within 10–7 after 10 minute warm-up Center Frequency Setting Resolution 0.1 Hz Span Accuracy ±0.3% (Auto mode) Reference Frequency – Aging per Day 1 x 10–9 (after 30 days of operation) Reference Frequency – Aging per Year 1 x 10–7 (after 30 days of operation) Reference Frequency – Temperature Drift 1 x 10–7 (10 °C to 40 °C) Total Frequency Error 2 x 10–7 (within one year after calibration) Reference Output Level \> 0 dBm External Reference Input Frequency 10 MHz External Reference Input Level Range –10 dBm to +6 dBm, Spurious level must be < –80 dBc within 100 kHz offset Resolution Bandwidth (Spectrum Analysis Mode) Resolution Bandwidth Range 1 Hz to 10 MHz (auto-coupled or user-selected) Resolution Bandwidth Shape Approximately Gaussian, shape factor <5:1 (60:3 dB) typical; Rectangular, Nyquist and Root Nyquist shapes may also be selected Resolution Bandwidth Accuracy Within 6% (referenced to –3 dB BW); ±0.1% (referenced to Noise BW) DPX Digital Phosphor Spectrum Processing Spectrum Processing Rate 48,000/s, span-independent Number of Traces 2 Trace Types Color-graded bit map, +Peak, Max Hold, –Peak, Min-Hold, Average Minimum Signal Duration for 100% Probability of Intercept 31 µs Span Range 100 Hz to 36 MHz Resolution BW Accuracy 7% Stability Residual FM < 2 Hz p-p, typical Phase Noise Sidebands, dBc/Hz (CF = 1 GHz, Spec) 1 kHz offset –105 10 kHz offset –110 100 kHz offset –112 1 MHz offset –132 5 MHz offset –138 10 MHz offset –138 Amplitude (excluding mismatch error) Measurement Range Displayed Average Noise Level to Maximum Safe Input Input Attenuator Range – RF/Baseband input 0 dB to 55 dB, 5 dB step Input Attenuator Range – IQ Input (Opt 03) 0 dB to 35 dB, 5 dB step Maximum Safe Input Level – Average Continuous (RF Band, RF ATT ≥10 dB) +30 dBm MAX DC Voltage RF Band ±0.2 V, Baseband ±5 V, IQ input (Opt. 03) ±5 V Maximum Measurable Input Level – Average Continuous (RF ATT: Auto) +30 dBm Log Display Scale 10 µdB/div to 10 dB/div Display Divisions 10 divisions Display Units dBm, dBµV, Volts, Watts, Hz, Degrees Marker Readout Resolution, dB units 0.01 dB Marker Readout Resolution, Volts units 0.001 µV Reference Level Setting Range – RF –50 dBm to +30 dBm, 1 dB step Reference Level Setting Range – Baseband –30 dBm to +20 dBm, 5 dB step Reference Level Setting Range – IQ Inputs (Option 03) –10 dBm to +20 dBm, 5 dB step Level Linearity over Display Range ±0.2 dB spec; ±0.12 dB typical Frequency Response (20 ºC to 30 ºC, Att. ≥10 dB) 100 kHz to 40 MHz ±0.5 dB spec; ±0.3 dB typical \> 40 MHz to 3.5 GHz ±1.2 dB spec; ±0.5 dB typical \> 3.5 GHz to 6.5 GHz ±1.7 dB spec; ±1.0 dB typical \> 6.5 GHz to 8 GHz ±1.7 dB spec; ±1.0 dB typical Amplitude Accuracy (–20 dBm signal, 0 dB ATT, 20 ºC to 30 ºC) Absolute Amplitude Accuracy at Calibration Point – RF (100 MHz) ±0.5 dB Absolute Amplitude Accuracy at Calibration Point – Baseband (25 MHz) ±0.3 dB Input Attenuator Setting Uncertainty ±0.2 dB > **Important:** Maximum safe input level: +30 dBm average continuous (RF band, RF attenuation ≥10 dB). Maximum DC voltage: ±0.2 V (RF band), ±5 V (Baseband and IQ input, Opt. 03). > **Important:** Data from Option 05 (Digital IQ Output) requires application of correction factors to IQ data to achieve similar RF performance to the RSA3408B. > **Important:** Frequency Mask Trigger (Option 02): events lasting less than the minimum event duration specification (20 µs at maximum acquisition bandwidth) will result in degraded Frequency Mask Trigger level accuracy. > Recommended pairing: use the RTPA2A adapter to connect Tektronix TekConnect active and passive probes for in-circuit troubleshooting, with probe calibration factors transferred via USB for calibrated measurements. ## 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 - 1050.0 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 | 700.00 USD | In stock | | NIST Traceable with Full Data | 840.00 USD | In stock | | ISO IEC 17025 Accredited | 1050.00 USD | In stock | ## Images - RSA3408B Tektronix Spectrum Analyzer --- > Source: [ValueTronics](https://valuetronics.com/products/rsa3408b-tektronix-spectrum-analyzer-used) > Updated: 2026-06-27