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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.
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.
| 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.
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.
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.
Model No
Tektronix
Condition
Pre-Owned
Manufacturer
Tektronix
Spec_ana_freq
DC to 8 GHz
2
65.5 MSample Deep Memory , Frequency Mask Trigger
3
IQ , Differential IQ Inputs
5
Digital IQ Output
6
Removable HDD.
21
General Purpose Modulation Analysis
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