Anritsu MS2840A Spectrum Analyzer / Signal Analyzer
Anritsu MS2840A Spectrum/Signal Analyzer covers 9 kHz to 44.5 GHz with strong close-in phase-noise performance and up to 125 MHz signal-analysis bandwidth.
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High-Performance RF Analysis with Exceptional Close-In Phase Noise
The Anritsu MS2840A Spectrum Analyzer / Signal Analyzer is designed for detailed RF signal characterization in research, development, and manufacturing applications where carrier-close-in phase noise and signal quality are important measurement parameters.
The MS2840A is available in frequency configurations covering 9 kHz to 3.6 GHz, 6 GHz, 26.5 GHz, or 44.5 GHz. Its spectrum analyzer and signal analyzer capabilities support both conventional swept-frequency measurements and FFT-based analysis of signal behavior in the frequency and time domains.
9 kHz to 44.5 GHz
Multiple frequency configurations for RF and microwave measurement
High Close-In Phase-Noise Performance
Designed for detailed characterization of carriers, local oscillators, and RF transmitters
31.25 MHz Standard
Signal analysis bandwidth expandable up to 125 MHz with an option
Expandable Measurement Platform
Supports optional phase-noise, noise-figure, modulation-analysis, and signal-generation capabilities
In addition to general spectrum measurements, the Signal Analyzer function supports measurements such as Frequency vs. Time, Power vs. Time, Phase vs. Time, spectrogram, and CCDF. Optional measurement functions extend the platform for phase-noise measurement, noise-figure analysis, vector and analog modulation analysis, and other RF evaluation tasks.
Exceptional Close-In Phase-Noise Performance
The MS2840A is optimized for measurements where signals close to the carrier must be resolved accurately. Anritsu specifies –123 dBc/Hz at a 1 GHz carrier and 10 kHz offset across the frequency configurations.
Frequency Coverage up to 44.5 GHz
Choose from measurement configurations extending to 3.6 GHz, 6 GHz, 26.5 GHz, or 44.5 GHz for RF and microwave signal analysis.
Up to 125 MHz Analysis Bandwidth
A 31.25 MHz analysis bandwidth is standard, with expansion up to 125 MHz available for applications requiring wider instantaneous signal analysis.
Frequency and Time-Domain Signal Analysis
FFT-based Signal Analyzer functions support Frequency vs. Time, Power vs. Time, Phase vs. Time, spectrogram, CCDF, and other measurements for examining changing RF signals.
Phase-Noise Measurement Capability
An optional Phase Noise Measurement function uses the MS2840A's low phase-noise architecture for evaluating signal sources, transmitters, and other RF devices where short-term signal stability is important.
Vector and Analog Modulation Analysis
Optional measurement software expands the MS2840A for vector-modulated signals and analog FM, phase-modulated, and AM signal evaluation.
Noise Figure Measurement
The optional Noise Figure Measurement function supports amplifier and RF-device noise-figure evaluation across configurations extending to 44.5 GHz.
Optional Integrated Signal Generation
The 3.6 GHz and 6 GHz configurations can be equipped with signal-generation capabilities for integrated transmitter, receiver, and BER-oriented test configurations.
RF and wireless transmitter characterization
Phase-noise and carrier-close-in signal analysis
RF signal-source and local-oscillator evaluation
Vector-modulated signal analysis
Analog FM, phase-modulation, and AM measurements
RF amplifier noise-figure measurement
Microwave wireless equipment development
RF device development and production testing
MS2840A Model Comparison
| Specification | 3.6 GHz Configuration | 6 GHz Configuration | 26.5 GHz Configuration | 44.5 GHz Configuration |
|---|---|---|---|---|
| Measurement Frequency Range | 9 kHz to 3.6 GHz | 9 kHz to 6 GHz | 9 kHz to 26.5 GHz | 9 kHz to 44.5 GHz |
| Standard Analysis Bandwidth | 31.25 MHz | 31.25 MHz | 31.25 MHz | 31.25 MHz |
| Maximum Analysis Bandwidth | Up to 125 MHz with option | Up to 125 MHz with option | Up to 125 MHz with option | Up to 125 MHz with option |
| Close-In Phase Noise | –123 dBc/Hz at 1 GHz, 10 kHz offset | –123 dBc/Hz at 1 GHz, 10 kHz offset | –123 dBc/Hz at 1 GHz, 10 kHz offset | –123 dBc/Hz at 1 GHz, 10 kHz offset |
| Signal Analyzer Function | Supported | Supported | Supported | Supported |
| Phase Noise Measurement | Optional | Optional | Optional | Optional |
| Noise Figure Measurement | Optional | Optional | Optional | Optional |
| Vector / Analog Modulation Analysis | Optional | Optional | Optional | Optional |
| Integrated Signal Generator | Available as option | Available as option | — | — |
Designed for Phase-Noise-Sensitive RF Measurements
Close-in phase noise can limit the ability of a spectrum analyzer to distinguish low-level signals and spurious components located near a strong carrier. The MS2840A is designed specifically to improve measurement performance in these demanding conditions.
Anritsu specifies close-in SSB phase-noise performance of –123 dBc/Hz at a 1 GHz carrier and 10 kHz offset across all MS2840A frequency configurations. For the 3.6 GHz and 6 GHz configurations, Anritsu also publishes measured performance reaching –138 dBc/Hz at 1 GHz and –140 dBc/Hz at 150 MHz, both at a 10 kHz offset.
Combined with the optional Phase Noise Measurement function, this performance makes the MS2840A particularly suitable for characterization of RF signal sources, transmitters, local oscillators, and other devices where signal purity close to the carrier is an important design or production parameter.
