SRS SR620 — Time interval and frequency counter

The SR620 Time Interval Counter performs virtually all of the time and frequency measurements required in a laboratory orATE environment.

The instrument's single-shot timingresolution and low jitter make it the counter of choice foralmost any application.

The SR620 measures time interval, frequency, pulse-width,rise and fall time, period, phase and events. Time intervals aremeasured with 25 ps rms resolution, making the SR620 one ofthe highest resolution counters available.

Frequency ismeasured from 0.001 Hz to 1.3 GHz, and a choice of gatesranging from 1 period to 500 seconds is provided.

The SR620delivers up to 11 digits of frequency resolution in one second,making it suitable for measurement applications ranging fromshort-term phase locked loop jitter, to the long-term drift ofatomic clocks.

All measurement modes are supported by awide variety of flexible arming and triggering options.