What detection system does the xxpress® NGx use? Gerald Thulbourn2018-07-19T12:33:29+01:00December 4th, 2017|Categories: Optics, xxpress® NGx| xxpress® NGx does not use PMTs or photodiodes, it uses a CCD camera as the detector. Share on social media FacebookTwitterRedditLinkedInTumblrPinterestVkEmail