The 53181A, 53131A and 53132A have long been the industry standard for frequency and time measurements. The new 53200 Series, the latest generation of frequency counters/timers, offers higher performance, more accuracy and advanced capabilities.
Imagine your counter doing MORE... "I never expected a frequency counter to do so much so fast!"
The Keysight 53131A universal counter is a 2-channel counter. It has the capability to do the job quickly and correctly from fast signal processing to automated limit tests.