Two 225 MHz input channels, plus optional third channel up to 12.4 GHz
10 digits per second, 500 ps time interval resolution
GPIB Standard
The 53131A and all associated options will be discontinued on December 1, 2016. The last order date will be November 30, 2016.

Replacement Product: 53220A

The recommended replacement products are the new 53200 Series RF & Universal Frequency Counter/Timers.

Transitioning from 53131A, 53132A, 53181A frequency counters to their replacements, the 53200 Series RF and universal frequency counter/timers

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.