The Yokogawa AQ6370C is an optical spectrum analyzer that utilizes diffraction grating technology to measure the wavelength and power of optical signals. It can analyze optical spectra in the visible and near-infrared regions. Its high wavelength resolution allows for detailed analysis of closely spaced spectral components, while its wide dynamic range ensures accurate measurements of both strong and weak signals. The instrument provides various analysis functions, such as peak search, spectral width measurement, and optical power measurement, simplifying complex optical signal analysis.

Aumictech – Yokogawa AQ6370C 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:
  • Standard model (-10): ±0.02 nm (1520–1580 nm), ±0.04 nm (1580–1620 nm), ±0.1 nm full range
  • High-performance model (-20): ±0.01 nm (1520–1580 nm), ±0.02 nm (1580–1620 nm), ±0.1 nm full range

• Wavelength linearity: ±0.01 nm (1520–1580 nm), ±0.02 nm (1450–1520 nm / 1580–1620 nm)

• Wavelength repeatability: ±0.005 nm (1 min)

• Resolution bandwidth settings: 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2 nm

• Resolution accuracy: ±5 % (≥0.1 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 −90 dBm (1300–1620 nm, HIGH3 mode)

• Maximum safe input power: +20 dBm per channel, +25 dBm total

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

• Level linearity: ±0.05 dB (−50 to +10 dBm, HIGH1–3)

• Flatness: ±0.1 dB (1520–1580 nm), ±0.2 dB (1450–1520 nm / 1580–1620 nm)

• Polarization dependence: ≤ ±0.05 dB

Dynamic Range & Stray Light

• Dynamic range (typical, Std vs High-performance):
  • At 0.02 nm RBW: 55 dB vs 58 dB (C-band)
  • At 0.05 nm RBW: up to 73 dB (±1 nm), 62–64 dB (±0.4 nm), 45–50 dB (±0.2 nm)
  • At 0.1 nm RBW: 57 dB vs 60 dB (±0.4 nm)

• Stray light suppression: 73 dB (standard), 76 dB typical (high-performance)

• Overall level range: +20 to −90 dBm

Sweep & Speed

• Sweep time (100 nm span, typical):
  • NORM_AUTO: ~0.2 s
  • NORMAL: ~1 s
  • MID: ~2 s
  • HIGH1: ~5 s
  • HIGH2: ~20 s
  • HIGH3: ~75 s

• High Dynamic mode: available to reduce stray light effects

Display, Storage & Interfaces

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

• Trace memory: up to 64 traces, 64 programs, 3 template lines

• Trace functions: subtraction, Max/Min hold, overlay, All-at-Once save

• Interfaces: GP-IB, RS-232C, Ethernet, USB, PS/2, VGA output, trigger in/out, analog out

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

• Printer option: built-in thermal printer (/B5 option)

Physical & Power

• Dimensions (W×H×D): approx. 426 × 221 × 459 mm (without handle/protector)

• Weight: approx. 19 kg (without printer)

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

• Operating environment:
  • Performance guaranteed: +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: AQ6370C vs Other Models

• AQ6370B vs AQ6370C: The AQ6370C improved wavelength accuracy, added high-performance model options, and enhanced dynamic range compared to the B model.

• AQ6370C vs AQ6370D: The AQ6370D further improves accuracy (±0.01 nm in high-performance models), offers faster sweep speeds, and better close-in dynamic range for DWDM testing.

• Positioning: AQ6370C is a strong balance between cost and performance, ideal for telecom testing, component development, and R&D labs, while AQ6370D targets labs needing the very highest precision.

Why Choose Aumictech for the Yokogawa AQ6370C?

The Yokogawa AQ6370C Optical Spectrum Analyzer is a high-precision OSA covering 600–1700 nm with strong dynamic range and resolution. It remains one of the most popular analyzers for telecom, DWDM, CWDM, and photonics R&D.

At Aumictech, we provide:

• NIST-traceable calibration to guarantee accuracy

• Repair and servicing to extend the life of your OSA

• Expert upgrade guidance when comparing AQ6370C against AQ6370D or other advanced models