The Tektronix RSA5126B is a real-time spectrum analyzer delivering frequency coverage from 1 Hz to 26.5 GHz with integrated vector signal analysis and trigger-capture-analyze functionality. Its DPX® spectrum processing engine delivers 3,125,000 spectra per second, enabling 100% probability of intercept for signals as brief as 0.434 μs. This instrument combines live spectral display with advanced triggering and recording capabilities, making it suitable for transient signal detection, multilevel signal characterization, and time-varying event analysis.
Technical Specifications
Frequency Coverage: 1 Hz to 26.5 GHz
Real-Time Acquisition Bandwidth: 25 MHz standard; optional 40 MHz, 85 MHz, 125 MHz, and 165 MHz configurations available
Dynamic Range: 80 dB real-time spurious-free dynamic range across the full acquisition bandwidth with HD options; –80 dBc typical spurious-free dynamic range using interleaved 16-bit, 200 MS/sec digitizers
Signal Sensitivity:
• DANL (no preamp): –142 dBm/Hz at 26.5 GHz; –157 dBm/Hz at 2 GHz; –150 dBm/Hz at 10 kHz
• DANL (with internal preamp): –156 dBm/Hz at 26.5 GHz; –167 dBm/Hz at 2 GHz
Distortion Performance: Third-order intercept +17 dBm at 2 GHz; amplitude accuracy ±0.3 dB to 3 GHz
Phase Noise: –113 dBc/Hz at 1 GHz (10 kHz offset); –134 dBc/Hz at 10 MHz carrier (10 kHz offset)
Sweep Performance: 1 GHz sweeps at 10 kHz RBW in less than 1 second
– Key Features
• DPX density™ triggering captures single events as brief as 0.434 μs
• Gap-free spectral recording and replay of up to 60,000 traces with adjustable resolution from 125 μs to 6400 s per line
• Swept DPX, gap-free spectrograms, and DPX zero-span modes for amplitude, frequency, and phase analysis
• Frequency mask triggering with advanced time-qualified, runt, and frequency-edge triggers supporting signals down to 20 ns
• Multiple simultaneous display modes for live and recorded data visualization
– Typical Applications
Transient detection and characterization, broadband signal monitoring, frequency-masked anomaly capture, and complex signal demodulation in RF communications and signal intelligence environments.
– Measurement Capabilities
AM/FM/PM and audio analysis available via Option 10. Additional measurement options via Option 11.
