The Rubidium Frequency Standard generates 4 coherent frequencies of 10 MHz, 5 MHz, 1 MHz and 0.1 MHz, with extremely good short and long term stability and high spectral purity. Each frequency is available from BNC connectors mounted on the front panel and on the back panel. In order to enable remote distribution of the various frequencies without interference, all the output circuits are short- circuit protected, mutually buffered and have a floating ground.