Anritsu MS9740B | Denkei Corporation Americas

MS9740B Optical Spectrum Analyzer (OSA)

Anritsu’s MS9740B is a benchtop Optical Spectrum Analyzer designed for fast and precise testing of optical devices across a 600 nm to 1750 nm wavelength range. It features wide dynamic range, high resolution, and fast sweep speeds—cutting processing times by up to 50% compared to previous models. It supports multimode fiber input and is optimized for manufacturing and evaluating devices like VCSELs, DFB lasers, LEDs, WDM filters, and optical amplifiers. The MS9740B enables simultaneous measurement of key parameters including center wavelength, optical level, OSNR, and spectrum width—all displayed in one screen. Ideal for boosting test efficiency in 5G and cloud-related applications.

Optical Spectrum Analyzer (OSA)

Model:

MS9740B

Maker:

Anritsu

Features

Key Features of Optical Spectrum Analyzer MS9740B

Wide dynamic range and high-speed measurement at optical receiver bandwidths used commonly by customers within production lines for optical active devices

‐　SMSR measurement at 45 dB minimum

‐　Maximum measurement processing time^*1 of 0.35s (sweeping 30-nm wavelength)

Facilitates Stable Production of High-output LDs

‐　±1.4 dB SMSR reproducibility^*2

Same key functions and performance as predecessor, supporting various production-line environments

‐　Wide wavelength band (600 nm to 1750 nm) for evaluating all optical active devices

‐　Nine application menus for LD-module, WDM, etc., measurements

*1: Sweeping in Fast mode; total time required for wavelength sweep, analysis, and data transfer to remote server

*2: With MS9740B-020. ±1.8 dB with Multimode Fiber Interface MS9740B-009 installed, Using SM fiber and DFB-LD with 1550 nm wavelength at 10 dBm peak power input, with 45 dB max SMSR and no change in polarization conditions, Pulse conditions: 5 kHz min repetition frequency and 1% min Duty, Pulse Mode enabled, 1 kHz VBW, 0.1 nm Setting Resolution, 10 nm max span, 501 sampling points, at 23C°±5°C

Specifications

Specifications	Details
	MS9740B	MS9740B-009
Applicable optical fiber	SM fiber (ITU-T G.652), 50μm/125μm GI fiber	SM fiber (ITU-T G.652), 50μm/125μm GI fiber, 62.5μm/125μm GI fiber
Optical connector	User replaceable: FC, SC, ST, DIN
Wavelength measurement range	600 nm to 1750 nm
Wavelength accuracy^*1	±20 pm (1520 nm to 1620 nm, Resolution: 0.03 nm to 0.2 nm)^2 ±100 pm (1520 nm to 1620 nm, Resolution: 0.5 nm, 1.0 nm)^2 ±300 pm (600 nm to 1520 nm)^3 ±200 pm (1520 nm to 1570 nm)^3 ±300 pm (1570 nm to 1750 nm)^*3	±50 pm (1530 nm to 1570 nm, Resolution: 0.07 nm to 0.2 nm)^2 ±100 pm (1530 nm to 1570 nm, Resolution: 0.5 nm, 1.0 nm)^2 ±300 pm (1570 nm to 1750 nm)^*4
Setting resolution	0.03, 0.05, 0.07, 0.1, 0.2, 0.5, 1.0 nm (RBW 3 dB transparent bandwidth)	0.07, 0.1, 0.2, 0.5, 1.0 nm (RBW 3 dB transparent bandwidth)
Maximum input power	+23 dBm (Optical ATT: On)
Dynamic range^*1	High dynamic range: 70 dB (±1 nm from peak wavelength), 60 dB (±0.4 nm from peak wavelength), 42 dB (±0.2 nm from peak wavelength) Normal dynamic range: 62 dB (±1 nm from peak wavelength), 58 dB (±0.4 nm from peak wavelength), 42 dB (±0.2 nm from peak wavelength) [Wavelength: 1550 nm, Resolution: 0.05 nm, Optical Att: Off, 20° to 30°C]	High dynamic range: 70 dB (±1 nm from peak wavelength, 20° to 30°C), 60 dB (±0.5 nm from peak wavelength, 20° to 30°C) 65 dB (±1 nm from peak wavelength, 5° to 45°C), 55 dB (±0.5 nm from peak wavelength, 5° to 45°C)Normal dynamic range: 62 dB (±1 nm from peak wavelength, 20° to 30°C), 58 dB (±0.5 nm from peak wavelength, 20° to 30°C) 57 dB (±1 nm from peak wavelength, 5° to 45°C), 53 dB (±0.5 nm from peak wavelength, 5° to 45°C)[Wavelength: 1550 nm, Resolution: 0.07 nm, using SM fiber, Optical Att: Off]
Sweep^*1	Sweep time: ≤0.2 s (span: 5 nm, Resolution: 0.1 nm), ≤0.3 s (span: 500 nm) [VBW: 10 kHz, Normal dynamic range, center 1550 nm (span: 5 nm), 1200 nm (span: 500 nm), sweep start to stop, no optical input, sampling point: ≤501]Sweep time: 0.35 s / 30 nm (typ.) [VBW: 1 kHz- Fast, dynamic range, center 1550 nm, Resolution: 0.1 nm, sweep start to stop, optical input -10 dBm, sampling point: 1001]Sweep time: 1,65 s / 30 nm (typ.) [VBW: 200 Hz-Fast, dynamic range, center 1550 nm, Resolution: 0.1 nm, sweep start to stop, optical input -10 dBm, sampling point: 1001]
SMSR Reproducibility (with MS9740B-020)	±1.4 dB (MS9740B), ±1.8 dB (with MS9740B-009 installed) Using SM fiber and DFB-LD with 1550 nm wavelength at 10 dBm peak power input, with 45 dB max SMSR and no change in polarization conditions Pulse conditions: 5 kHz min repetition frequency and 1% min Duty Pulse Mode enabled, 1 kHz VBW, 0.1 nm Setting Resolution, 10 nm max span, 501 sampling points, at 23°C ±5°C
Dimensions and Mass	426 (W) × 177 (H) × 350 (D) mm (excluding projections) ≤15.0 kg (without option)

*1: Warm-up the instrument for at least 2 hours before measurement by performing repeated sweeping at span ≥ 100 nm, VBW ≥ 10 kHz. Perform waveform calibration after auto-optical alignment (WI Cal) and keep the instrument at the same temperature unless stated otherwise. Use either SM fiber (ITU-T G.652) or GI fiber (50μm/125μm) with a return loss of >40 dB, or GI fiber (62.5μm/125μm) with a return loss of >38 dB
*2: Built-in MS9740B-002, after Wl cal (ref) wavelength calibration execution, at stable room temperature
*3: After Wl cal (Ext) wavelength calibration execution by external light source, such as Single Longitudinal mode laser (DFB-LD), using SM fiber
*4: After Wl cal (Ext) wavelength calibration execution by external light source, such as DFB-LD, using SM fiber or GI fiber (50μm/125μm or 62.5μm/125μm)

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