The Yokogawa AQ6370C is a high-performance optical spectrum analyzer (OSA) designed for the 600 to 1700 nm wavelength range. Well-suited for both research and development and manufacturing environments, it is available in standard (AQ6370C-10) and high-performance (AQ6370C-20) editions. Featuring an advanced monochromator with a stray-light suppression ratio that enables a dynamic range of up to 78 dB, the AQ6370C supports both single-mode and multimode optical fibers through a unique free-space optical input.

Specifications

General

ParameterValue
InterfacesGP-IB, RS-232, Ethernet (10/100Base-T), 4 × USB (Type A)
Display10.4-inch color LCD with SVGA (800 × 600) resolution

Physical

ParameterValue
Power Supply100 to 240 V AC, 50/60 Hz, maximum power consumption approx. 100 VA
Operating Temperature5 to 35
Dimensions (W×H×D)426 × 221 × 459
Weight19.0

Wavelength Specifications

ParameterValue
Wavelength Range600 to 1700 nm
Wavelength Accuracy (Standard Model AQ6370C-10)±0.02 nm (1520 to 1580 nm)
Wavelength Accuracy (High-Performance Model AQ6370C-20)±0.01 nm (1520 to 1580 nm)
Wavelength Linearity±0.01 nm (1520 to 1580 nm) / ±0.02 nm (1580 to 1620 nm)
Wavelength Repeatability±0.005 nm (1 min)
Wavelength Span Range0.1 nm to 1100 nm, and 0 nm (coarse)

Optical Power and Amplitude

ParameterValue
Dynamic Range (at ±0.2 nm from peak)70 dB (AQ6370C-10) / 73 dB (AQ6370C-20)
Dynamic Range (at ±0.4 nm from peak)78 dB typical (AQ6370C-20)
Power Measurement Range (Sensitivity)-90 to +20 dBm
Maximum Input Power+20 dBm
Power Level Accuracy±0.4 dB (at 1310/1550 nm, -20 dBm input)
Power Flatness±0.1 dB (1520 to 1580 nm)
Polarization Dependency (PDL)±0.05 dB (at 1310/1550 nm)
Level Linearity±0.05 dB (-50 to +10 dBm)
Optical Return Loss30 dB or more (with flat connector)
Level Sensitivity Categories7 user-selectable categories
Level Sensitivity (1000 to 1300 nm)-80 dBm

Resolution and Bandwidth

ParameterValue
Resolution Bandwidth Settings (FWHM)0.02, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0 nm
Minimum Resolution Bandwidth0.02 nm

Measurement Speed and Sweep

ParameterValue
Sweep Time (Minimum / 100nm Span)0.2 s (100 nm span)
Sampling Points per Sweep50,001 data sampling points

Optical Interfaces

ParameterValue
Optical Input Connector TypeFree space input (supports various optical connector adapters)
Compatible Fiber TypesSingle-mode (SM) and Multimode (MM) fibers

Analysis and Application Software

ParameterValue
Number of Traces7 individual traces
Spectral Analysis Functions13 built-in spectral analysis functions (WDM, LED, Spectral Width, Filter, FP-LD, DFB-LD, etc.)
Trace CalculationsCalculation between traces (e.g. subtraction)
Trace Hold ModesMax/Min hold
Macro ProgrammingSupported (automatic execution of program recorded via key strokes and parameter selections)
All-at-Once Trace FilingSupported (saves all 7 traces simultaneously in one file)

External Connectivity and Control

ParameterValue
Internal Storage Capacity512 Mbyte (sufficient for >20,000 traces)
External Storage CompatibilityUSB removable flash memory and external hard disk drives
Remote Control Command SetSCPI compatible and AQ6317 emulation mode
Software Driver SupportLabVIEW driver available
USB Peripheral SupportUSB mouse, keyboard, and storage device interfaces

Environmental and Regulatory

ParameterValue
Calibration Interval1 year (recommended)
Operating Humidity Range20 to 80% RH (no condensation)
Storage Temperature Range-10 to 50 °C
Warm-up Timeapprox. 1 hour

Performance

ParameterValue
Safe Maximum Input Power+20 dBm (total input power)
Level Sensitivity (1300 to 1620 nm)-90 dBm (sensitivity setting: HIGH3)
Level Sensitivity (1620 to 1700 nm)-85 dBm (sensitivity setting: HIGH3)
Dynamic Range at ±0.1 nm (High-Performance Model)50 dB (at 0.02 nm resolution, high dynamic mode ON)

Inputs & Outputs

ParameterValue
Trigger Input TerminalBNC connector, TTL level
Trigger Output TerminalBNC connector, TTL level
Analog Output TerminalBNC connector, 0 to 5 V (approx.)
External Monitor OutputVGA D-Sub 15-pin (female)
Analog Output Voltage0 to 5 V
External Display OutputVGA (D-Sub 15-pin)
GP-IB SpecificationIEEE 488.1 / 488.2 compliant
Ethernet Interface10BASE-T/100BASE-TX (RJ-45)
USB InterfacesType A (USB 2.0) x 4, Type B (USB 1.1) x 1

Environmental

ParameterValue
Maximum Operating Altitude2000 m

Safety & Compliance

ParameterValue
Laser Safety ClassClass 1 (IEC 60825-1:2007)

Wavelength

ParameterValue
Wavelength Display Resolution0.001 nm
Resolution Bandwidth Accuracy±10% (0.05 to 2.0 nm settings, 1520 to 1580 nm)

Level

ParameterValue
Level Display Resolution0.01 dB

Sweep / Trigger

ParameterValue
Trigger Input LevelTTL level
Trigger Output LevelTTL level

Power

ParameterValue
Power Consumption150 VA or less

Technology

Optical Spectrum Analyzer (Monochromator-based)

Applications

Spectral measurements of active/passive optical components, optical transceivers, and DWDM transmission equipment

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