Atomic counter is a frequency counter designed for an accurate frequency measurements. It has a PPS output from GPS used as a frequency normal 1). Its construction is now implemented in two variants:
Accuracy of both variants is determined by a used GPS and a quality of incoming signal. However, generally, each measurement needs to be averaged over a longer time period, because the time stamps only have a short-term accuracy in order of tenths of ns. Individual measurements can therefore have a relatively wide Gaussian scattering, which has to be eliminated by averaging.
Using Digital clock generator CLKGEN01B module, a functionality up to at least 850 MHz has been verified. However, as the divider's input Differential input Clock divider CLKDIV01A works up to 3 GHz, we expect the counter to be operational up to this frequency.