# Tektronix RSA3408A DC to 8 GHz Real-Time Spectrum Analyzer (Pre-Owned) # Tektronix RSA3408A DC to 8 GHz Real-Time Spectrum Analyzer (Pre-Owned) ## Key Features At A Glance - Frequency range DC to 8 GHz with 36 MHz real-time capture bandwidth (40 MHz at baseband) - Tektronix Frequency Mask Trigger captures transient, low-duty-cycle RF events by triggering on changes in the frequency domain - 14-bit A/D converter sampling at 102.4 MS/s; capture once and make multiple measurements from deep memory - GPIB (IEEE 488.2), 10/100 Base-T LAN, and USB interfaces for automated measurement systems - Spectrogram overlaps individual spectra as close as 20 ns for time-correlated multi-domain analysis - Displayed average noise level to -151 dBm/Hz typical with -78 dBc third-order intermodulation - Optional licensed suites: 802.11a/b/g WLAN, 3G cellular, and general-purpose digital modulation analysis - Optional 65.5 MSample deep memory (Opt. 02) extends record length and enables Frequency Mask Trigger The Tektronix RSA3408A is a Real-Time Spectrum Analyzer (RTSA) covering DC to 8 GHz. With a single acquisition it captures a continuous time record of changing RF events and enables time-correlated analysis across the frequency, time, and modulation domains. In one transportable package it combines the functionality of a vector signal analyzer, a wideband spectrum analyzer, and the trigger-capture-analyze capability that defines real-time spectrum analysis, letting an engineer see how the frequency and amplitude of an RF signal change over time in a single view. The RSA3408A is applied to system integration of WLAN, 3G, and other RF systems; radar and pulsed RF signal characterization; RFID system development and troubleshooting; and characterization of interfering or unknown signals in spectrum monitoring and surveillance. It is also used for troubleshooting RF components, modules, or systems, for diagnosing elusive EMI problems, and for general-purpose phase noise and jitter signal analysis. Its Signal Source Analysis simplifies phase noise, jitter, and frequency settling measurements. ValueTronics stocks and holds its own test-and-measurement 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 by our technicians before it ships, while new units leave factory-sealed exactly as received from the manufacturer. Holding inventory under our own roof lets us match the right instrument and condition to each customer's application and ship it promptly. ## Brand Heritage Tektronix, Inc. was founded in 1946 and operated as an independent test-and-measurement manufacturer for decades under the Tektronix name. It was acquired by Danaher Corporation in 2007, and in 2016 it became part of Fortive Corporation following Fortive's spinoff from Danaher. ## Accessories Supplied - User manual - Programmer's manual - Power cord - BNC-N adapter - USB keyboard and mouse ## Product Core & Specifications Specification Value Trigger Trigger Mode Free run (triggered by acquisition); Triggered (triggered by event), Single or Continuous Trigger Event Source Power (span BW); Frequency Mask (Opt. 02); External Pre-/Post-Trigger Setting Trigger position settable within 0 to 100% of total acquisition length Trigger Marker Position Timing Uncertainty (Power and External Trigger) ± 2 sample points Power Trigger Level Range 0 dBfs to –40 dBfs Frequency Mask Trigger (Opt. 02) — Mask Resolution 1-Bin Frequency Mask Trigger (Opt. 02) — Level Range 0 dBfs to –60 dBfs at 10 dB/div vertical scale Frequency Mask Trigger (Opt. 02) — Bandwidth Up to 36 MHz: Start frequency ≥40 MHz; Up to 40 MHz: Start frequency < 40 MHz Real-Time Event Detection Bandwidth (1024 point FFT) 100% probability of event detection at all Real-Time spans Minimum Event Duration One frame time; events lasting less than one frame time will result in degraded Frequency Mask Trigger accuracy Mask Shape User-defined Minimum Horizontal Mask Setting Resolution < 0.2% of span Frequency Mask Trigger Uncertainty ± 2 frames External Trigger — Threshold Voltage –1.5 V to + 1.5 V External Trigger — Threshold Voltage Setting Resolution 0.1 V External Trigger — Input Impedance \> 2 kΩ Trigger Output Voltage (Output Current <1 mA) HIGH: > 2.0 V; LOW: < 0.4 V Capture Real-Time Capture Bandwidth 36 MHz, RF; 40 MHz, baseband; 40 MHz using Opt. 03 IQ inputs A/D Converter 102.4 MS/s, 14-Bits Minimum Acquisition Length (RTSA/Time/Demod Modes) 1024 samples Maximum Acquisition Length (RTSA/Time/Demod Modes) 16,384,000 samples; 65,636,000 samples, Opt. 02 Acquisition Length Setting Resolution (RTSA/Time/Demod Modes) 1024 samples Acquisition Memory Size 16.4 Msamples; 65.6 Msamples, Opt. 02 Block Size (number of frames) 1 to 16,000; 1 to 64,000, Opt. 02 Memory Depth (Time) and Maximum Time Resolution 40 MHz (baseband) span Sample Rate 51.2 MS/s; Record Length 0.32 s; Record Length (Opt. 02) 1.28 s; Spectrum Frame 20 µs; Max Time Resolution 20 ns 36 MHz span 51.2 MS/s; 0.32 s; 1.28 s; 20 µs; 20 ns 20 MHz span 25.6 MS/s; 0.64 s; 2.56 s; 40 µs; 40 ns 10 MHz span 12.8 MS/s; 1.28 s; 5.12 s; 80 µs; 80 ns 5 MHz span 6.4 MS/s; 2.56 s; 10.24 s; 160 µs; 160 ns 2 MHz span 2.56 MS/s; 6.4 s; 25.6 s; 400 µs; 400 ns 1 MHz span 1.28 MS/s; 12.8 s; 51.2 s; 800 µs; 800 ns 500 kHz span 640 kS/s; 25.6 s; 102.4 s; 1.6 ms; 1.6 µs 200 kHz span 256 kS/s; 64 s; 256 s; 4.0 ms; 4.0 µs 100 kHz span 128 kS/s; 128 s; 512 s; 8.0 ms; 8.0 µs 50 kHz span 64 kS/s; 256 s; 1024 s; 16 ms; 16 µs 20 kHz span 25.6 kS/s; 640 s; 2560 s; 40 ms; 40 µs 10 kHz span 12.8 kS/s; 1280 s; 5120 s; 80 ms; 80 µs 5 kHz span 6.4 kS/s; 2560 s; 10240 s; 160 ms; 160 µs 2 kHz span 2.56 kS/s; 6400 s; 25600 s; 400 ms; 400 µs 1 kHz span 1.28 kS/s; 12800 s; 51200 s; 800 ms; 800 µs 500 Hz span 640 S/s; 25600 s; 102400 s; 1.6 s; 1.6 ms 200 Hz span 256 S/s; 64000 s; 256000 s; 4.0 s; 4 ms 100 Hz span 128 S/s; 128000 s; 512000 s; 8.0 s; 8 ms Measurement Speed Screen Update Rate (2 MHz Span, AUTO RBW) 19.4/sec Remote Measurement Rate and GPIB Transfer Rate (2 MHz span, auto RBW, spectrum data) 1.87 wfm/s or 6,000 S/s RF Center Frequency Switching Time < 10 ms for 10 MHz frequency change; 500 ms for 3 GHz frequency change Traces, Displays, Detectors Traces Two traces, Spectrum Analyzer Mode Displays Up to three time-correlated, user-selected displays Detector RMS Trace Types Normal (RMS), Average, Max Hold, Min Hold Display Detection Max, Min, Max/Min Modulation Analysis Analog AM — Minimum Input Level –40 dBfs, typical Analog PM — Minimum Input Level –40 dBfs, typical Analog PM — Scale, Max, Min ± 180º Analog FM — Minimum Input Level –40 dBfs, typical Analog FM — Range ± Span/2 from center frequency Digital (Opt. 21) — Modulation Formats BPSK, QPSK, π/4 DQPSK, OQPSK, 8PSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, GMSK, GFSK, 2ASK, 2FSK Digital (Opt. 21) — Analysis Period Up to 7680 sample points Digital (Opt. 21) — Filter Types Measurement filters: Square root raised cosine, none; Reference filters: Raised cosine, Gaussian, none Digital (Opt. 21) — Alpha/B\*T Range 0.0001 to 1, 0.0001 step Demodulation Accuracy (Analog) AM (–10 dBfs signal, input at CF, 10 to 60% modulation depth) ± 2% PM (–10 dBfs signal, input at CF) ± 3º FM (–10 dBfs signal, input at CF) ± 1% of span Digital Demodulation Accuracy (Opt. 21, Typical EVM %; symbol rates 100k / 1M / 4M / 10M / 20M per second) QPSK EVM, CF = 1 GHz 0.5 / 0.5 / 0.6 / 0.9 / 1.6 QPSK EVM, CF = 2 GHz 0.5 / 0.5 / 0.6 / 0.9 / 1.8 QPSK EVM, CF = 3 GHz 0.5 / 0.5 / 0.6 / 0.9 / 1.8 QPSK EVM, CF = 5 GHz 0.7 / 0.7 / 0.9 / 1.6 / 2.4 π/4 DQPSK EVM, CF = 1 GHz 0.6 / 0.6 / 0.6 / 0.9 / 1.8 π/4 DQPSK EVM, CF = 2 GHz 0.6 / 0.6 / 0.6 / 0.9 / 1.8 π/4 DQPSK EVM, CF = 3 GHz 0.6 / 0.6 / 0.6 / 0.9 / 1.8 π/4 DQPSK EVM, CF = 5 GHz 0.7 / 0.7 / 0.9 / 1.6 / 2.4 16/64 QAM EVM, CF = 1 GHz 0.5 / 0.5 / 0.5 / 0.7 / 1.2 16/64 QAM EVM, CF = 2 GHz 0.5 / 0.5 / 0.5 / 0.7 / 1.2 16/64 QAM EVM, CF = 3 GHz 0.5 / 0.5 / 0.5 / 0.7 / 1.2 16/64 QAM EVM, CF = 5 GHz 0.9 / 0.5 / 0.7 / 1.3 / 2.0 RF Performance — Frequency Frequency Range DC to 8 GHz > **Important:** Maximum safe input level: +30 dBm average continuous (RF band, RF attenuator =10 dB). Maximum DC voltage: ±0.2 V (RF), ±5 V (baseband), ±5 V (IQ input, Opt. 03). > **Important:** Data from Opt. 05 (Digital IQ Output) requires application of correction factors to the IQ data to achieve similar RF performance to the RSA3408A. > **Important:** Specifications for Options 21 through 29 are provided in the separate Real-Time Spectrum Analyzer Software Options datasheet (www.tektronix.com/RSA). > **Important:** All input signals up to 36 MHz spans are seamlessly captured into memory; 40 MHz bandwidth applies at baseband. > **Important:** Frequency Mask Trigger requires Opt. 02; minimum event duration is one frame time, and events lasting less than one frame time result in degraded Frequency Mask Trigger accuracy. > **Important:** Record lengths of up to 5120 s at 10 kHz span require Deep Memory Opt. 02. > **Important:** Safety and EMI compliance for IEC61010 second edition is by Self Declaration. > Usage tip: pair the RSA3408A with the Tektronix RTPA2A TekConnect probe adapter to use Tektronix active and differential probes for measuring signals on SMD pins and other challenging circuit features. ## 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 - 630.0 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 | 490.00 USD | In stock | | NIST Traceable with Full Data | 560.00 USD | In stock | | ISO IEC 17025 Accredited | 630.00 USD | In stock | ## Images - Tektronix RSA3408A DC to 8 GHz Real-Time Spectrum Analyzer (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/rsa3408a-tektronix-spectrum-analyzer-used) > Updated: 2026-06-27