The Advantest TR4131E is a microcomputer-controlled spectrum analyzer for RF and signal analysis spanning 10 kHz to 3.5 GHz. Built around a CRT display and engineered for field strength measurements, occupied bandwidth analysis, and CISPR-compliant quasipeak detection, it delivers precision spectral characterization across defense, communications, and EMC testing workflows.
– Technical Specifications
Frequency Range: 10 kHz to 3.5 GHz
Resolution Bandwidth: 1 MHz to 1 kHz; 1 Hz to 3 MHz
Dynamic Range: 70–100 dB depending on measurement mode
Amplitude Measurement: 0.05 dB marker resolution; ±0.5 dB accuracy
Phase Noise: < -100 dBc/Hz @ 10 kHz offset
Input Impedance: 50 Ω (standard); 0.75 Ω (R4131D/DN variant)
Input Power Range: -20 dBm to +30 dBm
Maximum Input Sensitivity: -116 dBm
Skirt Selectivity: -80 dBc or better
Sweep Time: 1 ms to 1000 s; user-selectable or automatic via AUTO feature
Operating Temperature: 0°C to +50°C
Power Consumption: 125 VA maximum at 48–66 Hz
Weight: 10 kg
– Key Features
• Independent tuning of center frequency, frequency span, and reference level
• AUTO feature automatically configures resolution bandwidth, sweep time, and input attenuation
• SAVE/RECALL memory stores up to three complete measurement setups and waveforms
• Post Peak and Posi/Neg display modes for signal capture optimization
• Antenna calibration factor compensation for field strength measurements
• Quasipeak detection conforming to CISPR standards (optional on TR4131E; standard on TR4131/M)
• Automatic Frequency Control (AFC) in 'B'-type and R4131D variants ensures frequency stability
• Direct plotter output and video display interface for external documentation
– Typical Applications
RF component characterization, electromagnetic compliance testing, spectrum monitoring, and signal integrity validation in communications and defense environments.
– Compatibility & Integration
GPIB control (standard on TR4131/M; optional on TR4131E) enables integration into automated measurement systems. Video output and plotter interfaces support direct waveform recording.
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