42PRELIMINARY1M28 and 1M75 User’s Manual03-32-00525-03DALSA4.2 Optical InterfaceThe cameras come with a built in C-mount lens adapter with the appropriate back focaldistance (17.52 ±0.18mm).4.3 ComplianceThe IM28 and 1M75 have passed the following EMC tests:•EN 61000-6-3: 2001•EN 61000-6-2: 2001