On Sun, Apr 22, 2012 at 8:00 AM, <[email protected]> wrote:
> Send time-nuts mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of time-nuts digest..." > > > Today's Topics: > > 1. About Racal Dana tactile switches (Fabio Eboli) > 2. PRS-10 input and output calibrations (Magnus Danielson) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 22 Apr 2012 13:44:41 +0200 > From: Fabio Eboli <[email protected]> > To: [email protected] > Subject: [time-nuts] About Racal Dana tactile switches > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes"; > format="flowed" > > Hello, this is my first message on this list, > I've read the recent thread about racal dana's switches, > this is the way i've done it: > > http://imageshack.us/photo/my-images/194/pulsantenuovo1r.jpg/ > > in this thread more details: > > > http://www.eevblog.com/forum/product-reviews-photos-and-discussion/racal-dana-1992-teardown/msg90950/#msg90950 > > A little crude but in a pair of hours i swapped all the switches. > To obtain the proper tip shape to fit the original caps, > i cutted a cross in a 2mm thick little brass plate and > fixed it to a soldering iron, found the correct > flow temperature of the plastic and the work was simple. > > The switches are normal 6x6mm tactile, only they tend to bounce sometime. > > Fabio. > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program. > > > > > > ------------------------------ > > Message: 2 > Date: Sun, 22 Apr 2012 13:49:06 +0200 > From: Magnus Danielson <[email protected]> > To: Time-Nuts <[email protected]> > Subject: [time-nuts] PRS-10 input and output calibrations > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Fellow time-nuts, > > Anyone who has tried to calibrate the PPS input and PPS output > interpolators of the PRS-10? > > The output calibration seems pretty easy to do, just a TIC to measure > the PPS to 10 MHz and then sweep through the output delay values to > cover a little more than the 400 ns range. > > The input calibration would be something in the similar way, a simpel > method would be to use a coax cable between output and input, and then > use the internal output offset to measure the range of the input > interpolator. However, the input interpolator is a decade better than > the output interpolator. However, considering that I have a 5359A just > waiting to be used, I think I use a fixed output PPS delay and trigger > the 5359A with and then sweep that one. > > I would then use the collected data to find suitable correction values. > > Comments and suggestions? Experience? > > Cheers, > Magnus > > > > ------------------------------ > > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > End of time-nuts Digest, Vol 93, Issue 114 > ****************************************** > _______________________________________________ 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.
