![Time Interval/Frequency Counter](https://d27wgn5g4t3wja.cloudfront.net/img/4f43849c-3483-4efa-950a-af1be0586562/82299.png)
Time Interval/Frequency Counter
SR620 - Stanford Research Systems, Inc. (SRS)
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.