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Frequency Counter Products

Keysight is the #1 Frequency Counter vendor in the world
Why? Because we offer a wide variety of time and frequency measurements with exceptional performance and reliability.

Introducing the new 350 MHz 53200 Series RF & Universal Frequency Counters/Timers
Speed, resolution & accuracy are just the beginning... See product links below for details. 

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Data Converter Product - Selection Guide
The guide presents the Acqiris family of cards and modules currently available.

Technical Overview 2014-07-15

MD1 Soft Front Panel Help System - Help File
(Save file to computer before use) Help system for the MD1 Soft Front Panel (SFP). LabVIEW driver for MD1 digitizers. Includes detailed API documentation of all driver functions.

Help File 2014-01-08

U1051A Time to Digital Converter
Application Note - Absolute Time Recovery

Application Note 2012-07-01

PDF PDF 1.19 MB
Acqiris Time-to-Digital Converters User's Manual
For Use with TC Series Time-to-Digital Converters

User Manual 2012-07-01

PDF PDF 864 KB
Research Papers: Academic publications on use of Keysight high-speed digitizers
Summary of scientific papers which provide a wide range of data on where and how Keysight high-speed digitizers are used in the advanced research experiments.

Selection Guide 2012-06-11

Keysight Acqiris Instruments Programmer’s Reference Manual
Programmer’s Reference Manual: Keysight Acqiris Instruments

Programming and Syntax Guide 2012-04-01

PDF PDF 1.73 MB
cPCI Time to Digital Converters, Security Features and Certificate of Volatility

User Manual 2011-06-01

PDF PDF 153 KB
U1051A Press Releases

Press Materials 2009-04-27

Acqiris U1051A Configuration Guide
This configuration guide explains how to configure the product: number of channels, front-end option, input connector types, memory options, etc.

Configuration Guide 2008-11-27

PDF PDF 368 KB
U1051A Acqiris TC890 Time-to-Digital Converter
Document describing the features of the U1051A 6-channel, multi-stop time-to-digital converter (TDC) with multi-start acquisition mode and 50 ps timing resolution.

Technical Overview 2008-05-19