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In this way, a board at the factory needing testing can have one slot in the back and two slots in the front that could be empty.\n\nA first idea implemented only passive components breaking out the clocks in a pairs of MMCX (space reasons), however in another thought there is the possibility to include a PLL do distribute the clocks, this however require that an isolated 3V3 DC-DC converter is included to provide power to the active components like the PLL.\n\n\n![[6_Slot_Crate.png]]\n[ref](https://schroff.nvent.com/sites/g/files/hdkjer281/files/acquiadam/2020-11/63972-317.pdf)\n\n\n\n\n![[14_Slot_Crate.png]]\n[ref](https://catalogue.library.cern/literature/5p184-jtb90)\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkit-ipe%2Fatca-simple-loopback-hub","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkit-ipe%2Fatca-simple-loopback-hub","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkit-ipe%2Fatca-simple-loopback-hub/lists"}