The data that RDR showed was from the SA22.c "w" command. I think he was just using a terminal program. Attached is a screen dump of Heather doing a software disciplining algorithm on a SA22.c (using the dev board as an interface). The 1PPS reference that I am using is the nosiest one that I had handy (LEA 5T, indoor antenna, second 1PPS output... it has over +/- 66 ns of jitter). Heather can also calibrate the SA22 / X72 frequency output. You apply a 1PPS input, enter &a and a sample count (default 1800 seconds). It then calculates the drift rate from a linear regression trend line and sets the device DDS tuning word. The resolution of the DDS in the device is around 2.5E-12 / count.

  linux counter #64628 (since 1997)

hi on the 2011 or newer items, they include this link calibration data plot. <http://www.rdrelectronics.com/skip/feb/EC0329.gif> i received a printed one with the unit. dave On Sat, Sep 2, 2017 at 6:55 AM, Mark Sims <holrum@hotmail.com> wrote: > The data that RDR showed was from the SA22.c "w" command. I think he was > just using a terminal program. > > Attached is a screen dump of Heather doing a software disciplining > algorithm on a SA22.c (using the dev board as an interface). The 1PPS > reference that I am using is the nosiest one that I had handy (LEA 5T, > indoor antenna, second 1PPS output... it has over +/- 66 ns of jitter). > > Heather can also calibrate the SA22 / X72 frequency output. You apply a > 1PPS input, enter &a and a sample count (default 1800 seconds). It then > calculates the drift rate from a linear regression trend line and sets the > device DDS tuning word. The resolution of the DDS in the device is around > 2.5E-12 / count. > _______________________________________________ > 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. > -- Dave Mallery, K5EN (ubuntu linux 16-10) PO Box 15 Ophir, OR 97464 linux counter #64628 (since 1997)

   linux counter #64628 (since 1997)

  linux counter #64628 (since 1997)

hi i got through the smoke to a machine shop today and should have an estimate for eight SA22.c sinks shortly. dave On Sat, Sep 2, 2017 at 2:48 PM, Dave Mallery <dave.mallery@gmail.com> wrote: > hi > > on the 2011 or newer items, they include this link calibration data plot. > <http://www.rdrelectronics.com/skip/feb/EC0329.gif> > > i received a printed one with the unit. > > dave > > On Sat, Sep 2, 2017 at 6:55 AM, Mark Sims <holrum@hotmail.com> wrote: > >> The data that RDR showed was from the SA22.c "w" command. I think he was >> just using a terminal program. >> >> Attached is a screen dump of Heather doing a software disciplining >> algorithm on a SA22.c (using the dev board as an interface). The 1PPS >> reference that I am using is the nosiest one that I had handy (LEA 5T, >> indoor antenna, second 1PPS output... it has over +/- 66 ns of jitter). >> >> Heather can also calibrate the SA22 / X72 frequency output. You apply a >> 1PPS input, enter &a and a sample count (default 1800 seconds). It then >> calculates the drift rate from a linear regression trend line and sets the >> device DDS tuning word. The resolution of the DDS in the device is around >> 2.5E-12 / count. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> > > > > -- > Dave Mallery, K5EN (ubuntu linux 16-10) > PO Box 15 Ophir, OR 97464 > > linux counter #64628 (since 1997) > > > > -- Dave Mallery, K5EN (ubuntu linux 16-10) PO Box 15 Ophir, OR 97464 linux counter #64628 (since 1997)

   linux counter #64628 (since 1997)

   linux counter #64628 (since 1997)

  linux counter #64628 (since 1997)

hi machine shop a flake. retrieving my stuff on monday, sorry... now what? 73 dave On Fri, Sep 8, 2017 at 3:11 PM, Dave Mallery <dave.mallery@gmail.com> wrote: > hi > > i got through the smoke to a machine shop today and should have an > estimate for eight SA22.c sinks shortly. > > dave > > On Sat, Sep 2, 2017 at 2:48 PM, Dave Mallery <dave.mallery@gmail.com> > wrote: > >> hi >> >> on the 2011 or newer items, they include this link calibration data plot. >> <http://www.rdrelectronics.com/skip/feb/EC0329.gif> >> >> i received a printed one with the unit. >> >> dave >> >> On Sat, Sep 2, 2017 at 6:55 AM, Mark Sims <holrum@hotmail.com> wrote: >> >>> The data that RDR showed was from the SA22.c "w" command. I think he >>> was just using a terminal program. >>> >>> Attached is a screen dump of Heather doing a software disciplining >>> algorithm on a SA22.c (using the dev board as an interface). The 1PPS >>> reference that I am using is the nosiest one that I had handy (LEA 5T, >>> indoor antenna, second 1PPS output... it has over +/- 66 ns of jitter). >>> >>> Heather can also calibrate the SA22 / X72 frequency output. You apply a >>> 1PPS input, enter &a and a sample count (default 1800 seconds). It then >>> calculates the drift rate from a linear regression trend line and sets the >>> device DDS tuning word. The resolution of the DDS in the device is around >>> 2.5E-12 / count. >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://www.febo.com/cgi-bin/m >>> ailman/listinfo/time-nuts >>> and follow the instructions there. >>> >> >> >> >> -- >> Dave Mallery, K5EN (ubuntu linux 16-10) >> PO Box 15 Ophir, OR 97464 >> >> linux counter #64628 (since 1997) >> >> >> >> > > > -- > Dave Mallery, K5EN (ubuntu linux 16-10) > PO Box 15 Ophir, OR 97464 > > linux counter #64628 (since 1997) > > > > -- Dave Mallery, K5EN (ubuntu linux 16-10) PO Box 15 Ophir, OR 97464 linux counter #64628 (since 1997)