The stability of the clock is measured by how many "ticks" it makes over a fixed interval. The more stable the number of ticks, the better the stability of the clock. So, define the average clock frequency over the interval asNote that is unitless: it is the numerical ratio between ticks of the physical clock and ticks of an ideal clock.
The stability of the clock is measured by how many "ticks" it makes over a fixed interval. The more stable the number of ticks, the better the stability of the clock. So, define the average clock frequency over the interval asNote that is unitless: it is the numerical ratio between ticks of the physical clock and ticks of an ideal clock.