Hi Paul, The bottom of any rack case is not a good heat sink (heat rises and there is no airflow). I'd put the LPRO on a "L" shaped aluminium bracket (thick as possible, I got extruded alloy angle cut-off's from a engineering Co once) close to the rear of the case. The longest edge should run along the back of the case. Then bolt through to a heatsink with vertical fins on the rear of the case. Heatsink compound (DC-340 or similar) on all mating surfaces. Robert G8RPI.
--- On Sat, 27/2/10, Paul Boven <p.bo...@xs4all.nl> wrote: From: Paul Boven <p.bo...@xs4all.nl> Subject: [time-nuts] Rack-mounting an LPRO? To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Date: Saturday, 27 February, 2010, 22:30 Dear time-nuts, I've just bought a used LPRO-101 which should get a permanent home inside an instrument rack. I've also found a very nice 1U high metal case, and a fitting 24V 1U power supply - leaving plenty of room for a distribution amp and a microcontroller to log things like lamp and Xtal voltage. The rackmount enclosure is 1U high, and seems to be made of 1mm thick galvanized steel. Would that make a good enough baseplate for the LPRO? Would I need to do anything to improve the thermal contact between the rubidium oscillator and the baseplate, and if so, any recommendations on what to use there? The LPRO "User's guide and integration guidelines" recommend 2degC/W thermal resistance (for up to 50degC ambient), and using some special thermal tape that will probably be very hard to get at these days. If any of you has already put something like this together, I'd be very interested in your suggestions. Regards, Paul Boven - PE1NUT _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
