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Thorlabs CHROLIS 3.1.2220.129 is a comprehensive instrumentation software suite published by Thorlabs GmbH that consolidates every component required to operate the company’s CHROLIS series of optical spectrum engines and related accessories. Packaged as a single installer, the release bundles the latest desktop control application, a full set of 32- and 64-bit Windows device drivers, and the most recent firmware images, eliminating the need to source each element separately. Researchers and OEM integrators use the program to configure multi-channel spectral engines for real-time absorption, transmission, or fluorescence measurements in life-science, semiconductor, and materials-analysis laboratories. The unified driver stack ensures plug-and-play recognition across USB 3.0 and GigE interfaces, while the desktop client provides wavelength calibration, dark-noise subtraction, and automated slit-width control for rapid experiment replication. Because the same package supports every hardware revision released to date, facilities can standardize on one software version even when instruments of different ages coexist on the same bench. Although only one public build—3.1.2220.129—has been issued, its payload is updated internally whenever new firmware or driver refinements are validated, guaranteeing that a fresh installation always delivers the newest operational code. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version, and supporting batch installation of multiple applications.
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