The Yokogawa AQ6370B is an optical spectrum analyzer that covers a wavelength range from 600 nm to 1700 nm. It offers high wavelength resolution and accuracy, making it suitable for evaluating optical transceivers, passive components, and fiber optic cables. Its built-in analysis functions and user-friendly interface enhance productivity and simplify complex measurements.

Aumictech – Yokogawa AQ6370B Optical Spectrum Analyzer 600–1700 nm Specifications

Optical Performance

• Wavelength range: 600 to 1700 nm

• Span: 0.5 nm to full range, and 0 nm

• Wavelength accuracy: ±0.02 nm (1520–1580 nm), ±0.04 nm (1580–1620 nm), ±0.1 nm across the full range

• Wavelength linearity: ±0.01 nm (1520–1580 nm)

• Wavelength repeatability: ±0.005 nm

• Resolution bandwidth settings: 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0 nm

• Resolution accuracy: ±5 % (≥0.05 nm RBW, resolution correction ON)

• Minimum sampling resolution: 0.001 nm

Level / Power Measurement

• Sensitivity modes: NORM_AUTO, NORMAL, MID, HIGH1, HIGH2, HIGH3

• Sensitivity (typical): down to −85 dBm (1300–1600 nm, HIGH3 mode)

• Maximum safe input power: +20 dBm

• Level accuracy: ±0.4 dB (1310/1550 nm, −20 dBm input, MID/HIGH modes)

• Level linearity: ±0.05 dB (−50 to +10 dBm)

• Flatness: ±0.2 dB across 1520–1620 nm

• Polarization dependence: ≤ ±0.05 dB

Dynamic Range & Stray Light

• Dynamic range (typical):
  • ~70 dB at ±1 nm (0.05 nm RBW)
  • ~60 dB at ±0.4 nm (0.05 nm RBW)
  • ~45 dB at ±0.2 nm (0.02 nm RBW)

• Stray light suppression ratio: ~70–73 dB typical

• Overall level range: +20 to −85 dBm

Sweep & Speed

• Sweep time (100 nm span, typical):
  • FAST mode: ~0.5 s
  • NORMAL mode: ~1–2 s
  • HIGH SENS mode: 30–60 s

• Sweep modes: single, repeat, and continuous

Display, Storage & Interfaces

• Display: 10.4-inch color LCD, 800×600 resolution

• Trace memory: up to 32–64 traces depending on configuration

• Trace functions: subtraction, Max/Min hold, overlay comparison

• Interfaces: GP-IB, RS-232C, Ethernet, USB, trigger in/out, VGA output

• Data export formats: CSV, binary, BMP, TIFF

• Printer option: built-in thermal printer available

Physical & Power

• Dimensions (W×H×D): approx. 426 × 221 × 459 mm

• Weight: approx. 19 kg

• Power supply: 100–240 VAC, 50/60 Hz, ~150 VA

• Operating environment:
  • Guaranteed performance: +18 to +28 °C
  • Operating: +5 to +35 °C
  • Storage: −10 to +50 °C
  • Humidity: ≤80 % RH, non-condensing

• Warm-up time: ~1 hour

Comparison: AQ6370B vs AQ6370 / AQ6370C / AQ6370D

• AQ6370 (original): Strong baseline analyzer with wide coverage but less efficient in dynamic range.

• AQ6370B: Improved user interface, enhanced stability, and better polarization dependence over the original AQ6370.

• AQ6370C: Advanced version with better wavelength accuracy and additional high-performance (-20) option.

• AQ6370D: Latest in the series, with higher accuracy (±0.01 nm in C-band for high-performance model), faster sweep speeds, and superior close-in dynamic range.

Why Choose Aumictech for the Yokogawa AQ6370B?

The Yokogawa AQ6370B Optical Spectrum Analyzer provides reliable performance across the 600–1700 nm wavelength range, making it ideal for telecom R&D, optical device testing, and WDM system evaluation. Its balance of speed, sensitivity, and resolution made it a workhorse during its release and it remains a capable legacy instrument.

At Aumictech, we provide:

• NIST-traceable calibration for guaranteed measurement accuracy

• Repair and service support to extend instrument life

• Upgrade guidance for customers considering transitions to AQ6370C or AQ6370D models