[time-nuts] Low cost high resolution software sawtooth error correction

[Dr Bruce Griffiths]

A small correction/clarification to the paragraph on the effect phase 
detector gain error.

The input sinewave amplitude only has to be known to within a few (5%) 
percent to keep the effective sawtooth correction error due to the phase 
detector gain uncertainty under 1ns when using an M12+T or M12M GPS timing 
receiver.In principle the ADC can be used to measure the amplitude of its 
input sinewave, such calibration conversions being interleaved between 
successive PPS pulses.

Bruce