> In the case of the 5370, page 3-12 of the manual is where it came from ("15. > Press STD DEV and +/- TI switch. Display should read less than 100 ps (this > reading is the instrument's jitter).")
I'm wondering if it would be more informative to make three runs: one with A and B uncorrelated to ref; one with A=ref and one with B=ref. > At some point between my original 2316 edition and the 2904 edition scanned > by David Kirkby, they apparently changed this step to call for pressing the > +TI switch, unless the +/- symbol failed to scan properly. I get about > 10-15 ps more jitter in +TI ONLY mode for whatever reason. Agreed, that's odd. Bruce, any ideas on this one? > The last time I studied the manual, I remember being convinced that the 5370 > would be relatively immune to clock-correlation effects if the interpolators > were set up properly. Right, but that's a big "if", especially if the unit is surplus. So it's best to assume the interpolators aren't perfectly tuned which is why keeping ref away from the A or B inputs is important. /tvb _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts