From the manufacturer:
Key Features
Full-band measurement range from 1250nm to 1650nm
Built-in wavelength calibration guarantees ±0.05 nm wavelength accuracy
Compatible with the T-BERD/MTS-6000A, T-BERD/MTS-8000 platforms
Improved field operation with light and portable design
Suitable for all CWDM to DWDM applications down to 33GHz channel spacing
One-touch test with automatic pass/fail analysis
Future-proof signal analysis for 40/100G testing and new modulation formats
Optical port: Universal SM-PC
The Viavi 2304/91.02 OSA-110M Compact Full-Band Optical Spectrum Analyzer Module, PC Optical Port, offers unmatched size, weight, and performance, which makes it ideal for field use. Housed inside the T-BERD/MTS6000A series platform (sold separately), it offers the smallest full-band OSA solution on the market.
The OSA-110M is suitable for all optical coarse wavelength division multiplexing (CWDM) and dense wavelength-division multiplexing (DWDM) networks down to 33 GHz channel spacing. The combination of high optical resolution with full-band measurement capability makes the OSA-110M ideal for testing power, wavelength, and drift during provisioning, maintenance, and upgrades of WDM systems.