Advantest R3365A – Spectrum analyzer

The Advantest R3365A is a spectrum analyzer covering 100 Hz to 8 GHz with an integrated tracking generator (100 kHz to 3.6 GHz). Built for RF and microwave signal analysis, it delivers -145 dBm input sensitivity in low-noise mode across 1 MHz to 3.6 GHz and maintains spectral purity of -110 dBc/Hz at 2.6 GHz (10 kHz offset). The instrument supports resolution bandwidths from 10 Hz to 3 MHz and video bandwidths from 1 Hz to 3 MHz, enabling detailed characterization of complex signals.

Technical Specifications

• Spectrum analyzer: 100 Hz to 8 GHz


• Tracking generator: 100 kHz to 3.6 GHz


• Frequency reference accuracy: ±1 ppm/year (standard); ±5 × 10⁻⁹/day (with Option 21)


• Frequency stability (after 1 hr warm-up): <2.5 kHz × sweep time for 50 kHz < span ≤ 2 MHz; <60 Hz × sweep time for span ≤ 50 kHz Amplitude Measurements


• Input sensitivity (low-noise mode): -145 dBm (1 MHz to 3.6 GHz)


• Amplitude range: +30 dBm to average display noise level


• Displayed average noise level: -135 dBm (min) to -100 dBm (max)


• Input attenuator: 0 to 70 dB (10 dB steps)


• IF gain uncertainty (after auto-calibration): <±0.5 dB (0 to -50 dBm); <±0.7 dB (0 to -80 dBm)


• Calibrator accuracy: -10 dBm ±0.3 dB


• Maximum dynamic range: 100 dB (250 MHz and above) Bandwidth & Resolution


• Resolution bandwidth: 10 Hz to 3 MHz (1, 3, 10 sequence)


• RBW accuracy: ±15% (100 Hz to 1 MHz); ±25% (30 Hz at 25°C ±10°C); ±50% (10 Hz to 100 Hz digital IF)


• Video bandwidth: 1 Hz to 3 MHz (1, 3, 10 sequence)


• Residual FM (zero span): 2 MHz); ±5% (≤2 MHz)


• Sweep time: 5 µs/div (high-speed); 50 µs to 1000 s (zero span); 20 ms to 1000 s (span ≥200 Hz)


• Sweep trigger: free run, line, single

Key Features

• Spectral purity: -110 dBc/Hz at 2.6 GHz (10 kHz offset frequency)


• Scale fidelity after auto-calibration: log ±0.2 dB/1 dB, ±1 dB/10 dB, ±1.5 dB/90 dB; linear ±5% of reference level


• Vernier accuracy: ±0.5 dB (25 MHz, -10 dBm output, 25°C ±10°C)


• Power sweep range: 30 dB (0.1 dB steps)

Typical Applications Component characterization, filter and amplifier testing, interference detection, signal monitoring, transmitter/receiver validation, and frequency response measurements across communications, aerospace, and defense sectors.

Compatibility & Integration Built-in tracking generator enables scalar network analysis without external source. Flexible sweep modes and trigger options support automated test sequences and manual investigative measurements.