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Agilent 53131A 12.4GHz

Universal Counter "loaded"

This is not you typical 53131A; It is loaded with not only Option 124 (12.4 GHz C channel) but also Option 001 (Ovenized Time Base) and Option 060 (Additional rear connectors).

Although the 53131A and 53132A have become common on eBay, I doubt you will see another 12gHZ unit. 

This instrument is in mint condition both physically and electrically. I believe it is just over a year old so it should still have two more years of standard warranty. I have not checked with Agilent on whether this counter has an extended warranty.

If you are unfamiliar with this instrument the Agilent 53131A has frequency resolution of 10 digits per second, 500ps time interval resolution and a complete set of test and analysis features.   This counter offers 2 channels up to 225MHz and a third channel that measures from 200MHz to 12.4GHz.  This third channel option (#124) can measure signals from -23dBm to +13dBm making it the  highest frequency universal counter offered by Agilent.  Also included in this current product is the medium stability ovenized time base option (#001) and rear panel connector option(# 060).  the medium stability oven offers temperature stability of > 2x10-7, and an aging rate of > 2x10-7 per month.  

Channels one and two have selectable input impedance  of 1ohm or 50ohm.  Measurements include frequency, time interval, ratio.  Phase angle, totalize, peak voltage, pulse parameters and more.  A single key stroke recalls up to 20 different stored front panel setups, making this one of the easies counters to use for repetitive measurement.

Agilent Data Sheet


  • Measurements include frequency, frequency ratio, time interval, rise/fall time, phase, duty cycle, positive/negative pulse width, totalize, peak voltage, time interval average and time interval delay
  • Automated limit tests and one-button measurement setups for fast, easy operation
  • Onboard digital signal processing speeds measurements
  • Built-in statistics feature lets you simultaneously measure average, min/max, and standard deviation
  • Small package fits the limited space on your bench top


Our Warranty

As our many customers will attest, we will do our very best to resolve any customer problems.  But our official policy is: All items sold are guaranteed against D.O.A. only. All claims must be made within 3 days of receipt.   All warranties are void if the calibration / warranty seals are broken. 

Ascent Concepts and Technologies is a Research & Development Lab.  As a service to the companies and institutions we work with, we broker their excess equipment & acting as application specialists on their new equipment needs.  We are now offering quality used equipment to the public with the same level of professionalism and service.   Please feel free to email at thomasknox@ascentconcepts.com or call Thomas @ 1-303-554-0307 with any Technical questions. Please feel free to email at waltwhite@ascentconcepts.com or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions.   We make every effort to evaluate and guarantee our equipment.  Although we do not provide NIST traceable calibration, we do have in house calibration equipment and will make every effort to test and verify performance on equipment we sell.  However we do not warranty any items shipped outside the United States.  All equipment we sell comes with a three day right of return unless stated otherwise.

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Buyer will pay $30.00 packing & shipping in Continental USA.  We will make every effort to ship within 24 hours of receipt of payment.  We ship with FedEx & UPS only. We will be glad to ship with other carriers using the purchasers shipping account.  Please contact us to make any special shipping arrangements. For shipping rate research, our shipping address is Boulder, CO USA ---- Zip Code is 80305.

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The equipment shown is a representation only.  We often have multiple units in stock so please email us with your needs.  We have a large inventory and can usually find any test and measurement item in a short time frame.------Inquires info@ascentconcept.com