Advantest Rohde & Schwarz R4131B RF/Microwave Spectrum Analyzer, 10 kHz–3.5 GHz

The Advantest Rohde & Schwarz R4131B RF/microwave spectrum analyzer is a portable measurement instrument covering 10 kHz to 3.5 GHz. It is designed for RF testing, microwave signal analysis, field-strength measurements, harmonic measurements, CATV evaluation, satellite broadcast testing, and wireless communications maintenance.

Key features include:

• Frequency range: 10 kHz–3.5 GHz
• Resolution bandwidth: 1 kHz to 1 MHz in 1-3 steps at 3 dB points; 9 kHz and 120 kHz at 6 dB points when quasi-peak mode is selected
• Average noise level: -116 dBm, or -114 dBm for the R4131BN, plus 1.55f (GHz) dB or less
• Measurement conditions for average noise level: 1 kHz resolution bandwidth, 10 Hz video filter, 0 dB attenuation, and frequencies of 1 MHz or above
• Frequency response with 10 dB attenuation: ±1 dB from 100 kHz to 2 GHz and ±2 dB from 10 kHz to 3.5 GHz
• AFC: Automatic Frequency Control for stable spectrum analysis
• Measurement memory: Stores up to three sets of measurement conditions, including waveforms
• Auto-recall: Automatically recalls stored measurement conditions when power is applied
• CISPR-related measurement functions: Directly readable field-strength measurements with antenna calibration-factor compensation and quasi-peak measurements
• System connectivity: Standard GPIB interface, direct plotting capability, and video output
• Dimensions: 300 × 177 × 460 mm (W × H × D)
• Weight: 10 kg

The R4131B can be integrated with optional TR4153A/4153B or TR4154 tracking generators for wide-dynamic-range frequency-response measurements. Typical applications include 900 MHz mobile-radio third-harmonic testing, satellite broadcast field-strength measurement, CATV system evaluation, and RF compliance analysis.

The delivered unit is used, tested, fully functional, and ready for operation. An instruction manual is included.