Foss NIRSystems has introduced Service Pack 3 for Vision 3.50 and, at the same time, released DSP 27, which replaces DSP 26 and all previous versions. New features of the Service Pack 3 include a new option for archiving routine analysis output projects, an improved instrument stabilisation test for improved monitoring of the detector(s) and a new XDS set-up/diagnostics menu which has been added to the menu bar.