Unlock Accurate Frequency Analysis with Keysight Used Frequency CountersUsed Frequency Counters: Precision Measurement Solutions at Unbeatable Value
Key Specifications
Frequency Range
Up to 350 MHz
Resolution
Up to 12 digits/second
Time Interval Resolution
As low as 20 psec
Connectivity
LXI-C/Ethernet, USB, GPIB options
Input Channels
Single to dual-channel configurations
Featured Resources

RF and Universal Frequency Counter
Comparison Guide

Choosing the Best Frequency Counter: 10 Hints
Keysight 53200 Series Frequency Counter: Product Overview
FAQ
What are the main differences between Keysight New, Keysight Premium Used & Keysight Used equipment?
| Keysight New | Keysight Premium Used | Keysight Used | |
| Savings | None | Up to 70% | Up to 90% |
| Condition | New | Like New | Working Condition ¹ |
| Firmware | Latest | Updated | As is |
| Calibration | Full | Full | As listed |
| Accessories | New | New | As listed |
| Warranty | 1 to 5 Years ² | Like New | 90 Days Warranty |
| Customization | Possible | Possible | Limited |
Can I Customize a Unit to Meet My Needs?
Yes, customization is generally possible with our Keysight Premium Used equipment. Most products can be configured to your specifications with additional options available at an extra cost. Please note that customization may impact delivery times. Some Keysight Used products may not offer customization options. Contact our eStore team via the product page for more information.
What Accessories Are Included in Keysight Premium Used Equipment?
Keysight Premium Used equipment typically has the same accessories and warranty as new products.
Can I Include Additional Accessories?
Currently, we only offer accessories that are listed with each product. If you require additional accessories, they can be purchased separately at the time of buying a Keysight Used or Keysight Premium Used unit. Specify your needs in the comment field during checkout.
How Do I Order Accessories Separately?
For separate or post-purchase accessories orders, please contact your local Keysight office or Keysight Partner. You can also check our online store for availability in your region or contact us directly through our website.
What exactly is a frequency counter?
A precision digital frequency counter is an instrument that measures the frequency and input characteristics of electronic signals. It is designed to deliver reliable performance across diverse applications, offering features such as:
- Precise cycle counting technology
- Accurate measurement of electronic signals
- A critical tool for analyzing the frequency of operation
- Support for various signal types and frequencies
Essential for professionals needing precise signal analysis across multiple domains.
Can I use a frequency counter for different types of signals?
Keysight RF frequency counters offer comprehensive signal measurement capabilities:
- Microwave frequency counters
- Low-frequency electronic signals
- Pulse and time interval measurements
- Supports multiple signal types and duty cycle analysis
- Adaptable across research and testing applications
Versatility is key to comprehensive signal characterization.
What connectivity options do these frequency counters support?
Modern frequency counters are equipped with a range of connectivity options to enhance functionality and integration, including:
- LXI-C/Ethernet interfaces for network-based communication and remote operation
- USB connectivity for quick and easy device interfacing
- GPIB support for compatibility with legacy equipment
- Options to remotely control clock modules for precise adjustments
- Seamless integration into existing measurement ecosystems for streamlined workflows
These options provide flexibility for both standalone use and integration into complex testing setups.
How do I calibrate a used frequency counter?
Keysight provides comprehensive calibration for frequency meters:
- Factory recalibration using an internal oscillator
- Traceable to international standards
- Ensures maximum frequency measurement accuracy
- Periodic calibration recommended
- Maintains instrument reliability
Maintaining precision is crucial for dependable measurements.
Can frequency counters measure complex or non-standard signals?
Advanced Keysight handheld frequency counters excel in sophisticated signal analysis, offering the tools needed to handle intricate and unique signal types. Their capabilities include:
- Single-shot frequency resolution
- Supports reciprocal frequency counter techniques
- Frequency ratio calculations
- Pulse width analysis
- Advanced signal processing capabilities
- Handles intricate signal characteristics
Precision engineering for complex measurement challenges.
What is the difference between a frequency counter and an oscilloscope?
While both frequency counters and oscilloscopes are essential tools for signal analysis, they serve different purposes:
- Frequency Counters: These devices are designed for precise numerical measurement of a signal's frequency. They provide exact data and are ideal for applications requiring accuracy in frequency analysis.
- Oscilloscopes: These instruments offer a visual representation of a signal's waveform, allowing users to observe its shape, amplitude, and timing characteristics.
Although they perform different functions, frequency counters and oscilloscopes are often used together, as their capabilities complement each other in comprehensive signal testing and analysis.
What are the main types of frequency counters?
Keysight offers specialized frequency counter variants:
- Universal frequency counters
- RF frequency counters
- Microwave frequency counters
- Single and dual-channel counters
- Handheld frequency counters
- Time interval counters
- Quartz crystal oscillator-based models
Tailored solutions for diverse measurement requirements.
What is the typical frequency range for most counters?
Keysight frequency counters provide extensive measurement capabilities:
- Ranges from DC to 350 MHz
- Select models measuring up to 6 or 15 GHz
- Supports maximum frequency analysis
- Resolution up to 12 digits/second
- Single-shot measurements as low as 20 psec
Covering critical frequency measurement spectrums.
How do digital frequency counters work?
Digital frequency counters operate through advanced measurement techniques, combining precision hardware and algorithms to analyze signal characteristics effectively. Key functions include:
- Count signal cycles in fixed gate time
- Convert analog signals to digital measurements
- Utilize Oven-controlled crystal oscillators
- Calculate frequency through accurate cycle counting
- Provide high-resolution numerical output
Transforming complex signals into precise, actionable data.
Can frequency counters measure microwave frequencies?
Keysight microwave frequency counters specialize in high-frequency measurements:
- Dedicated RF countermodels
- Frequencies up to 6 or 15 GHz
- High-precision microwave signal analysis
- Low noise and stable measurements
- Ideal for telecommunications research
- Advanced capabilities for complex signal environments
Pushing the boundaries of frequency measurement technology.



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