[time-nuts] Motorola Oncore M12+T Sawtooth
tom.wimmenhove at gmail.com
Thu Jan 29 19:56:31 EST 2015
On Thu, Jan 29, 2015 at 5:27 PM, Tom Van Baak <tvb at leapsecond.com> wrote:
> google for: m12 gps sawtooth
I have seen your saw-tooth graphs on leapsecond. It did slightly increase
my confidence that all units probably are within this range. I guess I can
assume this is the same among all M12 units.
> The +/- 127 comes from the range of 8 bits.
Yes. I just meant to say that the datasheet doesn't state anything about
the actual range of the saw-tooth correction message .
> /tvb (i5s)
> > On Jan 29, 2015, at 12:44 PM, Tom Wimmenhove <tom.wimmenhove at gmail.com>
> > I've built a bunch of carrier board for the M12+T timing receiver. One
> > thing I could not find much information about is the maximum sawtooth
> > (which, I assume, related directly to the frequency of the receiver's
> > internal LO). I know my particular module outputs a correction values
> > between -15 and +15, in which case I could use a DS1023-25 delay-line
> > which uses .25ns increments instead of the DS1023-100, which uses 1ns.
> > would give the overall circuit slightly better linearity. Problem is that
> > the datasheet doesn't say anything about this, it just says -128..+127ns.
> > Does anyone know if there are receiver units out there that have
> > LOs ?
> > Regards,
> > Tom
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at febo.com
> > To unsubscribe, go to
> > and follow the instructions there.
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> and follow the instructions there.
More information about the time-nuts