JDS Uniphase COSA-4055

The COSA-4055 is a handheld CWDM Optical Spectrum Analyzer module designed for installation, maintenance, and network upgrades. It delivers complete spectral analysis in under 4 seconds, integrating full OSA functionality into a portable form factor compatible with T-BERD/MTS-2000 and T-BERD/MTS-4000 platforms. The module operates across the 1260 to 1625 nm wavelength range with -55 to +10 dBm measurement capability, making it a cost-effective solution for metro and access network testing. ## Technical Specifications • Wavelength range: 1260 to 1625 nm • Dynamic range: -55 to +10 dBm • Noise floor: -55 dBm • Level accuracy: ±0.5 dB • Level linearity: ±0.1 dB • Resolution bandwidth: 4 nm • Optical return loss: >35 dB • Scan time: <4 seconds • Display: 7-inch TFT color • Operating temperature: -5 to +50°C • Storage temperature: -20 to +60°C • Module dimensions: 128 x 134 x 40 mm • Module weight: 0.35 kg ## Key Features • ITU-T G.695 and G.674.2 compliant • Tunable channel grid supporting ITU-T G.694.2 CWDM wavelengths and custom grids • Complete spectral trace with tabular power and wavelength results • Zoom and marker functions for detailed analysis • Wavelength and power drift measurement • Automatic channel detection and pass/fail analysis against user-settable limits • Optional SFP bay (version 2301/02) hosts up to 2 SFP CWDM transceivers for insertion loss testing and end-to-end link continuity verification • Multiple optical connectors: FC/PC, SC, ST, DIN, LC ## Typical Applications • Metro and access network performance verification • CWDM network maintenance and troubleshooting • Spectral and drift testing of CWDM sources • Vendor compatibility assessment • Insertion loss testing with simulated CWDM transmitters • End-to-end continuity checks in mux/demux and OADM networks ## Compatibility & Integration The module integrates directly into T-BERD/MTS-2000 and T-BERD/MTS-4000 platforms, eliminating the need for standalone test equipment in field operations.