To the list, If you listen carefully to the Symmetricom slide show, particularly page 3, it will tell you all you need to know:
http://www.brainshark.com/Steve_FatSymmetricom/vu?pi=691826191&dm=5&pause=1&appKey=77 You will discover that that it is indeed a Cesium operated device. HOWEVER ! It is operated in the same manner as a Rubidium device. Doing such does NOT make it a primary standard. In a Cesium Primary standard, a beam of Cesium atoms are energized to a higher state whose decay give off a photon of light such that being on frequecy produces more light to the detector. In the Rb system, the Rb cell acts simply as a light filter such that when on frequency the light level is reduced as seen by the detector. This Symmetricom CSAC device uses the same process as the Rb method above. It uses a laser to push light through a chamber of Cesium gas. This Cesium gas is acting as a simple light filter. So in its current state it will not rival it superior cousins except in size and power comsumption and possibly price for performance in some applications. Bill....WB6BNQ _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
