EXFO has added C Optical Spectrum Analyser test module to its Windows-based IQS-600 platform, a modular system providing optical, transport and datacom testing in a single environment. Today's complex systems and networks rely on new technologies such as reconfigurable add-drop multiplexers (ROADM) and transmit at speeds reaching 40G and 100G. Achieving reliable in-band OSNR values is critical. This is why the IQS-5240S/B-P OSA features EXFO's OSNR measurement approach, which enables lab researchers and technicians to achieve accurate in-band OSNR measurements of a ROADM or 40Gbit/s system. To meet lab and manufacturing testing needs, the module also analyses WDMs and EDFAs, to measure drift and spectral transmittance, and to control DFB lasers from a remote location via Ethernet or GPIB using provided SCPI commands. The module can complete a scan and display the results in less than one second.