Advantest R3361C 9Khz to 2.6GHz Spectrum Analyzer

The Advantest R3361C is a synthesized spectrum analyzer delivering precision RF signal analysis from 9 kHz to 2.6 GHz. Built on Advantest's RF engineering expertise, this instrument combines wide frequency coverage with 1 Hz resolution and 1 dB total level accuracy, making it suitable for laboratory and field measurements. The R3361C features a 120 dB display dynamic range, selectable resolution bandwidths from 30 Hz to 1 MHz, and an optional internal tracking generator for frequency response characterization of filters, amplifiers, and other components.

Technical Specifications

• Frequency Range: 9 kHz to 2.6 GHz


• Frequency Resolution: 1 Hz


• Center Frequency Setting Increment: 1 Hz minimum


• Frequency Span: 1 kHz to 2.6 GHz (linear); 1, 2, or 3 decades between 10 kHz and 1000 MHz (log)


• Frequency Span Accuracy: ±3% of span


• Amplitude Measuring Range: −130 dBm to +25 dBm


• Maximum Input Level: +25 dBm (with ≥30 dB attenuator)


• Displayed Average Noise Level: Typically −130 dBm


• Total Level Accuracy: 1 dB (typical)


• Resolution Bandwidth: 30 Hz to 1 MHz switchable; 6 dB bandwidth selections at 200 Hz, 9 kHz, 120 kHz


• RBW Accuracy: ≤20%


• Selectivity: ≤15:1 (60 dB:3 dB)


• Sweep Time: 50 ms to 1000 s


• Display Dynamic Range: 120 dB


• Measurement Dynamic Range (with Tracking Generator): 110 dB


• Sideband Noise: ≤−105 dBc/Hz (20 kHz offset, f ≤3.0 GHz)


• Frequency Stability: ≤300 Hz/min drift (after 1 hr warm-up); residual FM ≤50 kHz peak-to-peak


• Reference Oscillator Aging: ±2×10⁻⁸/day, ±2×10⁻⁷/year


• Reference Oscillator Temperature Stability: ±5×10⁻⁸ (0 to 50°C, referenced at +25°C)

Key Features

• Synthesized local oscillator for high stability


• 1 Hz resolution frequency setting and counter mode


• Internal tracking generator (standard)


• Multiple display modes: log (120 dB, 80 dB, 50 dB, 20 dB, 10 dB) and linear (10 div)


• Marker accuracy with normal and counter modes

Typical Applications

• RF signal analysis and characterization


• Component frequency response measurement (filters, amplifiers)


• System integration and validation


• EMI/RFI troubleshooting