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Starting From US$ 3,405

Typical Configuration  

Typical Configuration

53181A RF Counter, 225 MHz, 10 digit/s. GPIB, RS232

  • 53181A-225 Standard 225 MHz Channel 1, with no Channel 2
  • 53181A-000 Standard Timebase
  • 53181A-0B0 Download the product manual from the Keysight website
  • R-51B-001-Z Return to Keysight Warranty - 3 years


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

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.