Brian use PDF999 http://www.pdf995.com/ its a printer driver that prints to PDF file. When installing it just untick all the other junk it wants to install. You get a few of ads when using it but its free otherwise.
Ray. --- On Thu, 29/10/09, Brian Kirby <[email protected]> wrote: > From: Brian Kirby <[email protected]> > Subject: [time-nuts] G P S D O > To: "precise time" <[email protected]> > Received: Thursday, 29 October, 2009, 2:32 PM > I have attached a plots of various > GPSDO's compared against a HP5065A rubidium. > > The first plot is of a HP Z3801A. The left scale > spans 36 nanoseconds. > > The second plot is of a Trimble Thunderbolt, its running > default 100 second time constant with a 1.2 damping > factor. Its from the group purchase. I changed > the scale to span 36 nanoseconds. > > The third plot is of Efratom FRS-C rubidium that is > controlled by the Shera Controller, and its GPS source is an > older Motorola Oncore VP, ver 10. The scale > spans 36 nanoseconds. Bear in mind > this was not his stock PIC, but a PIC that we modified for a > rubidium. His stock PIC had a update rate of 30 > seconds, we tested units at 60, 120 and 240 seconds and > settled on 120 seconds after the preliminary > data. The time constant was set up for mode > 7, I believe that works out to the proportional > controller time constant around 1/3 of a day (I'll > have to find the paperwork and run the calcs). > > I tried to present some information earlier, but the only > instrumentation I had was a HP 53131A, with TAC32, and a > Efratom FRK-L for reference. At that time I did not > have the computing horsepower, plotting capability or some > more serious instrumentation. > > The instrumentation used in these plots was a HP 5370B, it > baselines at 2x10-11 at one second and drops a magnitude for > every decade in tau. The recording was done via a > Prologix GPIB USB adapter and HyperTerminal in > Windows. The plots were generate in DF6JB/Ulrich's > Plotter program (thanks !). > > After generating the plots, I scanned them into PDF at 200 > DPI to save bandwidth. I have not been able to > generate PDF's directly inside of Plotter. I use > version 6 of PDF and it takes an internal error. AT > the present, I cannot afford to upgrade it. > > I bought a Fury controller a couple of years back and due > to personal issues I could not put it to use. My next > project it to put the Fury on the FRS-C and see how much we > can smooth it out.... > > Brian KD4FM > > -----Inline Attachment Follows----- > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. __________________________________________________________________________________ Get more done like never before with Yahoo!7 Mail. Learn more: http://au.overview.mail.yahoo.com/ _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
