Hello Everyone I need help on on calibrating Time base oscillators for counters with Lady Heather's Version 5 Can any one help with the setup for making measurements. Thank You On Wednesday, January 26, 2011, 5:56:16 a.m. EST, Achim Vollhardt <avollhar@physik.uzh.ch> wrote: Luciano, the fan controller setting can be seen here in near-realtime: http://gulp.physik.uzh.ch/heather/ I let it autotune once by 'ka4' and left it like that.. works fine. For photos, I would have to open the box again.. which would seriously disturb the temperature :) I will do internal photos next time, but you might guess from the outside photos, what is inside. http://gulp.physik.uzh.ch/heather/pics/ I used Warren's simple transistor circuit he provided in an earlier post to control the fan from the RS232 pin 4. As I wanted to keep the RS232 outside interface free from additional cables, I opened the TBolt and wired pin 4 with a dedicated wire to the outside world. 73s Achim, DH2VA _______________________________________________ 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.