Product Description

The Stanford Research SR620 Universal Time Interval Counter combines the single-shot resolution of a time interval counter with the expansive features of a universal counter. The SR620 measures time interval frequency pulse-width rise and fall time period phase and events. Time intervals are measured with 25 ps rms resolution making the SR620 one of the highest resolution counters available. Frequency is measured from 0.001 Hz to 1.3 GHz and a choice of gates ranging from 1 period to 500 seconds are provided. The SR620 delivers up to 11 digits of frequency resolution in a 1 second measurement. It is suitable for measurement applications ranging from short-term phase locked loop jitter to long-term drift of atomic clocks. All measurement modes are supported by a wide variety of flexible arming and triggering options. IEEE-488 and RS232 interfaces are standard.