[time-nuts] Motorola Oncore M12+T Sawtooth
Tom Van Baak
tvb at leapsecond.com
Thu Jan 29 17:27:33 EST 2015
google for: m12 gps sawtooth
The +/- 127 comes from the range of 8 bits.
> On Jan 29, 2015, at 12:44 PM, Tom Wimmenhove <tom.wimmenhove at gmail.com> wrote:
> 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 chip
> which uses .25ns increments instead of the DS1023-100, which uses 1ns. This
> 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 different
> LOs ?
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