Hi Yes indeed, the period was measured with the two channels in the com mode and the reference into one of them. I hadn't considered the trigger offset issues and was expecting something sub-100 ps rather than 500 ps. Obviously I need to spend some "quality time" with this beast. Now I gotta figure out how to change the gate time :}......
It sounds like my oscillator buffer board is going to get butchered pretty soon. Bob On Mar 9, 2010, at 11:30 PM, Mark Sims wrote: > > 99.95 ns is a typical number for the period reading at minimum gate time. > Set the gate time to 1 sec. My 5370A shows 99.999 999 9650 +/- 50 at 1 sec > gate time. > >> From my experience it can take at least a couple of months of continuous >> operation for the oscillator in an unused 5370 to stabilize its drift rate. >> Once stabilized, the 10544A's in the 5370A seem to be much LESS drifty >> than the 10811's in the 5370B.There are three mods that I do to all the >> 5370s that cross my path. First I replace the fan with a 12V 120 ma >> brushless DC fan driven by the 10V supply. Second I drill a hole in the >> top of the case over the oscillator tuning control. Third, I add a switch >> to the oscillator buffer board to disable that STUPID oscillation detected >> LED that spew put 5 MHz noise all over creation. I also disassemble and >> clean those slide switches on the front panel. >> > _________________________________________________________________ > Hotmail: Trusted email with Microsoft’s powerful SPAM protection. > http://clk.atdmt.com/GBL/go/201469226/direct/01/ > _______________________________________________ > 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.
