Advantest Q8383 Optical Spectrum Analyzer Wavelength, 550 to 1750 nm

The Advantest Q8383 Optical Spectrum Analyzer delivers precise optical signal characterization across the 550 nm to 1750 nm wavelength range. This benchtop instrument combines high dynamic range, fast sweep capability, and advanced analysis functions to serve telecommunications, fiber optics, and component testing environments. With input signal handling from -92 dBm to +20 dBm and wavelength resolution adjustable from 0.1 nm to 5 nm, It has the measurement flexibility required for WDM systems, optical amplifier noise figure analysis, and detailed spectral characterization.

Technical Specifications

• Wavelength Range: 550 nm to 1750 nm


• Wavelength Resolution: 0.1 nm (minimum) to 5 nm (maximum)


• Input Power Range: -92 dBm to +20 dBm


• Dynamic Range: 55 dB maximum


• Measurement Accuracy: ±0.4 dB


• Sweep Time: 0.8 s


• Optical Pulse Measurement: Minimum 10 ns pulse width (30 µs or longer recommended)


• Power Supply: AC 100–120 V / 220–240 V, 50/60 Hz; ≤200 VA consumption


• Operating Temperature: +10°C to +40°C


• Physical: 424 mm (W) × 221 mm (H) × 500 mm (D); 29 kg or less

Key Features

• Auto peak search, auto peak center, and auto reference level adjustment


• Spectrum width and notch width analysis for signal characterization


• Multi-trace display (up to 32 traces) with superimpose and cursor measurements


• Dual upper/lower display with wavelength/frequency axis scaling


• WDM signal analysis and optical amplifier noise figure measurement


• Internal RAM storage (≥15 screens at 501 samples, battery-backed)


• 3.5-inch floppy disk drive (1.44 MB) for data logging


• Wavelength and level offset correction with built-in or external calibration source


• External TTL synchronization input for pulse and transient measurements

Optical Interface

• Accepts FC (standard), ST, and SC connectors (user replaceable)


• Internal 9.5/125 µm single-mode adapting fiber


• Reflective attenuation ≥35 dB


• Compatible with multimode and single-mode fibers

Integration IEEE 488-1978 GPIB remote control interface. VGA video output (15-pin female) and D-SUB 25-pin printer interface (ESC/P, ESC/P-R, PCL formats). CE marked to 89/336/EEC and 73/23/EEC directives.