Here’s the page we think you wanted. See search results instead:


Contact an Expert

Key Features & Specifications

  • RF Frequency Counter, 10 digits/s
  • One 225 MHz input channel, plus optional second channel up to 12.4 GHz
  • 10 digits/second resolution
  • GPIB Standard


The 53181A and all associated options will be discontinued on December 1, 2016. The last order date will be November 30, 2016.

Replacement Product: 53210A

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.

The Keysight 53181A provides fast, precise results with the core measurements needed for RF tests.