Used Equipment Store

Account Benefits

Get a customised view of the Used Equipment Store

Manage your details to get quick responses by the team

Stay up-to-date on specials, prices and availability

Already have an account? Log In

Create Your Account

Sign up to receive marketing or promotional emails from Keysight

By submitting this form, you are providing Keysight with your personal data. For information on how we use this data, see the Keysight Privacy Statement.

How to Use a Pulse Generator: Complete Buying Guide & Tips

Your browser limits use of the Used Keysight Equipment website.
Please consider switching to a current version of Chrome, Firefox, Edge or IE11 to use this site.

Choosing the right pulse generator can be challenging, with countless options promising to meet your needs. Determining which device delivers the performance and precision required for your projects is no simple task.
Complex interfaces and poorly designed tools can lead to frustration and wasted resources. For engineers, finding a reliable and budget-friendly pulse generator is not just important—it is essential.
This guide simplifies the process, covering essential features to consider, common mistakes to avoid, and tips to ensure your choice aligns with your needs. Get ready to make an informed decision and achieve the results your work demands.

A Brief Refresher on Pulse Generators

Pulse generators are important tools for engineers, designed to produce precise electrical pulses that test and simulate a variety of circuit behaviors. 
Unlike function generators, which create continuous waveforms, pulse generators specialize in sharp, time-controlled signals critical for digital and high-speed circuits. 
If you're curious about the differences between pulse generators and other signal generators, this signal generator guide offers a comprehensive breakdown.

Key Parameters and Their Impact

Understanding a pulse generator's specifications ensures you're equipped to make the right choice. Below is a quick reference table:

ParameterImpact
Frequency RangeDetermines the generator’s ability to produce pulses at the speed required for your circuit.
Rise and Fall TimesFaster times improve signal accuracy in high-speed applications.
Duty CycleAffects the pulse width, critical for simulating specific timing scenarios.
AmplitudeImpacts signal strength, ensuring compatibility with different circuit components.

Typical Use Cases

Engineers rely on pulse generators in various applications, including:

  • Simulating input signals in digital circuits: Test how logic gates respond to specific pulse patterns.
  • Triggering devices like oscilloscopes: Synchronize measurements and ensure accurate data collection.
  • Controlling switching components in power circuits: Analyze how switches operate under different pulse conditions.

Whether you’re debugging a digital system or verifying the performance of a new design, understanding how pulse generators integrate into your workflow is key. Ready to explore their features in depth? Let’s move on to what to look for when buying one.

RF Signal Generators

Real-World Signal Testing

See N5172B Special Offers

Key Features to Look for When Buying a Pulse Generator

When selecting a pulse generator, prioritize advanced features that enhance precision, efficiency, and adaptability. 
These features are crucial for achieving optimal results in modern testing environments. For a broader comparison of different types, refer to this guide to signal generator types.

1. Frequency Range

The frequency range of a pulse generator determines how well it can support a variety of applications. 
High-frequency ranges are critical for RF testing and high-speed digital circuits, ensuring the device can handle signals with rapid transitions and tight timing requirements.

  • Low-frequency signals (up to 1 MHz): Suitable for simple digital circuits and low-speed systems.
  • Mid-range frequencies (1 MHz – 100 MHz): Ideal for general-purpose testing in most digital and analog circuits.
  • High-frequency signals (100 MHz and above): Necessary for advanced RF applications, high-speed data communication systems, and microwave technologies.

When evaluating your needs, ensure the generator covers both current and anticipated requirements. Use this frequency calculator to determine the exact specifications required for your applications.

2. Rise and Fall Time Control

Rise and fall times directly impact the quality of the pulse signal, particularly in circuits operating at high speeds or with sensitive components. 
Faster rise and fall times reduce signal distortion and improve edge clarity, which is vital for accurate testing of high-speed data lines, clock signals, or RF systems.

  • Adjustable rise/fall times: Allow you to tailor signal characteristics to specific circuit needs.
  • Typical requirements: For high-speed digital testing, look for rise/fall times under 10 nanoseconds. RF circuits may demand even faster transitions.

Learn more about the significance of rise time and how precise timing impacts signal integrity.

3. Multichannel Output

A pulse generator with multichannel outputs improves testing efficiency by allowing simultaneous testing of multiple circuits or signal paths. 
This feature is particularly valuable for complex designs, such as those involving logic gates, FPGAs, or multi-signal synchronization.

  • Time-saving benefits: Reduce setup and testing time by generating multiple independent or synchronized signals.
  • Applications: Useful in digital signal processing, telecommunications, and embedded system testing where parallel outputs are required.
  • Channel synchronization: Check if the device offers phase adjustment and synchronization for more advanced testing scenarios.

A multichannel pulse generator can be a game-changer when working on intricate systems, significantly streamlining workflows.

4. Programmability and Automation

Programmable pulse generators simplify testing by automating repetitive tasks and ensuring consistent results across multiple test scenarios. 
Modern devices often include software interfaces that integrate seamlessly with lab environments.

  • Automation advantages:
    • Store and retrieve predefined test sequences.
    • Automate complex timing and waveform adjustments.
    • Minimize manual errors in high-volume testing.
  • Software compatibility: Ensure the device supports programming languages or software tools like LabVIEW or Python for greater flexibility.
  • Time-saving tools: Programmable devices are ideal for long-term testing where reliability and repeatability are critical.

For more on automation benefits, explore automatic features and calibration guidance to maintain peak performance.
By focusing on these advanced features, you can ensure your pulse generator is not only effective for your current needs but also adaptable to future challenges.

How to Use a Pulse Generator in Circuit Testing

To effectively use a pulse generator, you need to understand the settings and integrate it into your testing workflow. Follow these steps to ensure accurate and reliable results in real-world applications.

Step 1: Connect the Pulse Generator to Your Test Setup

Maintaining signal integrity and avoiding unnecessary noise or signal degradation requires proper connections.

  • Use high-quality cables and connectors to ensure minimal signal loss.
  • Connect the output of the pulse generator directly to the input of the circuit under test.
  • Include termination resistors if required to match impedance and avoid reflections in high-speed circuits.

Taking the time to inspect connections and verifying compatibility between devices will save troubleshooting efforts later.

ENA Vector Network Analyzers

Perfect Signals, Perfect Performance

See E5080B Special Offers

Step 2: Configure the Pulse Generator Settings

Adjust the pulse generator settings to match your application needs. This step ensures the output aligns with the requirements of the circuit being tested. Key settings include:

  • Frequency: Determines the timing of the pulses.
    • Low frequencies: Suitable for digital circuits.
    • High frequencies: Ideal for RF applications.
  • Duty cycle: Controls the width of the pulses, critical for simulating timing-sensitive operations.
  • Amplitude: Matches the voltage level of your circuit's components.

Here’s a quick checklist:

  • Set frequency for the desired signal timing.
  • Adjust duty cycle to create precise pulse widths.
  • Configure amplitude to match circuit requirements.

Fine-tuning these parameters will help achieve optimal testing conditions.

Step 3: Verify the Output Using an Oscilloscope

Once the pulse generator is configured, use an oscilloscope to verify the signal's accuracy and ensure it meets the desired specifications.

  • Check for signal distortion: Look for unwanted noise or irregularities.
  • Confirm timing and voltage levels: Verify that the pulse generator's output matches your configuration.
  • Inspect for interference: Ensure external noise isn’t affecting the signal.

For guidance on choosing the right tools, refer to this used oscilloscope buying guide. Additionally, you can explore tips on measuring current accurately for further refinement of your testing process.
By following these steps, you can ensure your pulse generator delivers accurate and consistent results for your circuit testing needs.

Real-World Applications of Pulse Generators

Pulse generators are vital in many industries, offering the precision and reliability needed to simulate signals, test systems, and optimize performance. 
Below are real-world applications tailored to specific fields. For a deeper understanding of pulse waveforms, visit this guide to square waves.

1. Telecommunications

In telecommunications, pulse generators are crucial for testing and validating high-speed networks, ensuring reliable data transmission, and minimizing latency.

  • Signal integrity testing: Validate RF circuits and wireless communication pathways to ensure accurate signal transmission under real-world conditions.
  • Protocol testing: Simulate data packets to evaluate the performance of network hardware, such as routers and switches.
  • Timing synchronization: Test the accuracy of timing in systems that depend on precise intervals, such as 5G networks.

Telecommunications engineers rely on pulse generators to troubleshoot and optimize network performance, ensuring robust and efficient communication systems.

2. Automotive Electronics

The automotive industry leverages pulse generators to test and refine critical vehicle systems, ensuring safety, reliability, and performance.

  • ECU validation: Test the timing and response of Electronic Control Units, which manage essential systems like engine performance and safety features.
  • Airbag and ABS testing: Simulate precise signal timings to ensure airbags deploy correctly and ABS systems respond instantaneously in emergencies.
  • Advanced Driver Assistance Systems (ADAS): Validate the reliability of systems like lane-keeping assistance and adaptive cruise control.

Automotive applications demand high-precision pulse generators to meet strict industry regulations and deliver a safe driving experience.

3. Medical Devices

Medical devices require meticulous testing to ensure they perform flawlessly, particularly in life-critical applications. Pulse generators play a pivotal role in this process.

  • Pacemaker simulation: Generate heartbeat-like signals to test pacemaker reliability under different physiological conditions.
  • Imaging equipment: Validate the response of sensors in MRI machines, ultrasound devices, and CT scanners.
  • Wearable health devices: Test sensors in fitness trackers and monitoring equipment for accuracy and responsiveness.

The healthcare industry depends on pulse generators for the development and testing of devices that improve patient outcomes and ensure safety.

4. Aerospace & Defense

In aerospace and defense, the stakes are high, and systems must perform flawlessly in demanding environments. Pulse generators are essential for testing and validation.

  • Radar signal simulation: Test radar systems to ensure they can detect and track objects accurately in real-time scenarios.
  • Navigation systems: Validate GPS systems and other navigational tools to ensure precise location tracking under challenging conditions.
  • Electronic warfare systems: Simulate countermeasure signals to test the effectiveness of defense mechanisms.

These applications require pulse generators with exceptional accuracy and reliability to support mission-critical operations and national security needs.
By understanding these expanded use cases, you can see how pulse generators are integral to ensuring the functionality and reliability of technologies across diverse industries. 
For further insights into their applications, explore this list of uses for signal generators. For a deeper understanding of pulse waveforms, visit this guide to square waves.

Common Mistakes When Using a Pulse Generator (and How to Avoid Them)

Even experienced engineers can encounter issues when working with pulse generators. Avoid these common pitfalls to ensure accurate and reliable testing. 
For further guidance on voltage settings and signal visibility, check out input voltage basics and this oscilloscope display overview.

1. Incorrect Frequency Settings

Mistake: Using a frequency that doesn’t match your application can result in inaccurate signals or unintended circuit behavior. For example, using a frequency that is too high might introduce aliasing, while a frequency too low might not simulate real-world conditions effectively.

Solution:

  • Understand the requirements of your circuit: Determine the operating frequency range of the circuit you are testing.
  • Adjust appropriately: Set the pulse generator frequency to match the timing needs of your circuit.
  • Test and verify: Use an oscilloscope to confirm the output matches the desired frequency.

Matching the frequency to your application ensures realistic and meaningful test results, improving both performance and accuracy.

2. Overlooking Rise/Fall Time Requirements

Mistake: Ignoring the rise and fall times can lead to signal distortion, especially in high-speed digital circuits. This distortion may result in inaccurate testing or malfunctioning components.

Solution:

  • Select a generator with adjustable rise/fall times: This provides flexibility for tailoring signal edges to your application.
  • Match component requirements: High-speed circuits typically require fast rise/fall times to maintain signal clarity.
  • Test with an oscilloscope: Verify the transitions and ensure they meet the design specifications.

A pulse generator with fine-tuned rise and fall times reduces errors and maintains signal integrity, especially in precision testing.

3. Poor Connections

Mistake: Loose or low-quality connections can introduce noise, cause inconsistent signal output, and lead to inaccurate results.

Solution:

  • Inspect connections before testing: Ensure cables are securely attached to both the pulse generator and the circuit under test.
  • Use high-quality cables and connectors: These reduce resistance and minimize signal loss or noise.
  • Check impedance matching: Add termination resistors where necessary to prevent reflections in high-speed circuits.

By carefully managing your connections, you can prevent interruptions, maintain signal clarity, and ensure consistent results in your testing process.

How to Troubleshoot Common Pulse Generator Issues

Even the best pulse generators can encounter issues. Knowing how to identify and fix common problems ensures your equipment performs optimally and your projects stay on track. 
Here are actionable troubleshooting tips for resolving common challenges. For more on distinguishing tools or setting up equipment correctly, check out spectrum analyzer vs. oscilloscope.

1. Issue: Inconsistent Signal Output

Cause:

  • Loose connections between the pulse generator and test circuit.
  • Incorrect settings for frequency, amplitude, or duty cycle.
  • Outdated firmware affecting the functionality of the device.

Solution:

  • Inspect connections: Verify that all cables and connectors are securely attached and free from damage.
  • Review settings: Double-check the pulse generator’s configuration to ensure it matches your application requirements.
  • Update firmware: Check the manufacturer’s website for firmware updates and apply them to address potential software glitches.

Regular checks and proper setup reduce inconsistencies and ensure reliable operation.

2. Issue: Signal Distortion

Cause:

  • Poor-quality cables or connectors introducing noise.
  • Incorrect rise/fall time settings causing distorted edges.

Solution:

  • Use high-quality cables: Invest in low-resistance, shielded cables to minimize interference.
  • Adjust rise/fall times: Fine-tune these settings to match your circuit’s requirements and avoid sharp or overly rounded signal edges.
  • Verify with an oscilloscope: Monitor the signal to identify and address distortion early.

Optimizing these factors ensures clear and accurate signal generation, critical for high-speed and sensitive circuits.

3. Issue: Device Overheating

Cause:

  • Prolonged use without sufficient cooling periods.
  • Poor ventilation around the pulse generator.

Solution:

  • Ensure ventilation: Place the device in a well-ventilated area and avoid obstructing air vents.
  • Follow usage guidelines: Adhere to the manufacturer’s recommended duty cycle to prevent overuse.
  • Consider additional cooling: If overheating persists, use external cooling solutions, such as fans or heat sinks.

Proper thermal management extends the life of your pulse generator and ensures stable operation under demanding conditions.

Benefits of Using a Programmable Pulse Generator

A programmable pulse generator goes beyond basic signal generation, offering features that save time, improve accuracy and testing workflows. 
Whether you're working on complex designs or repetitive tasks, investing in a programmable model can elevate your lab’s performance. 
For a deeper dive into the advantages of programmable models, check out this guide on refurbished arbitrary waveform generators.

Key Benefits

  • Time-saving: Store and automate test sequences for repetitive tasks, eliminating the need to reconfigure settings manually. This feature is especially useful for long-term or iterative testing.
  • Increased accuracy: Automated settings minimize human error, ensuring consistent results across multiple tests.
  • Multichannel support: Test multiple circuits simultaneously, which significantly speeds up workflows for systems requiring parallel signal generation.

Programmable vs. Standard Pulse Generators

FeatureStandard Pulse GeneratorProgrammable Pulse Generator
AutomationManual configurationStores and automates test sequences
Multichannel SupportLimitedMultiple independent or synchronized outputs
Repetitive Task HandlingRequires manual setupAutomates for efficiency
Customizable SettingsLimited adjustabilityFully customizable for specific needs

 

For more details on how programmable generators stack up against other tools, explore this comparison of arbitrary waveform vs. function generators

Why Choose Programmable?

Programmable pulse generators simplify complex tasks, reduce setup time, and improve testing accuracy. 
These devices are indispensable for engineers handling intricate designs, large-scale production testing, or projects requiring repeatability. When you invest in a programmable model, you future-proof your testing capabilities while achieving greater efficiency and precision.

MSOX Oscilloscopes

Precision You Can Trust

See MSOX 3000 Series Offers

Tips for Maintaining Your Pulse Generator

Proper maintenance ensures your pulse generator operates reliably and lasts for years. Following these tips will help you protect your investment, maintain accuracy, and prevent unexpected downtime. 
For more guidance, explore this guide on evaluating calibration companies and the importance of calibration certificates.

1. Keep the Device Clean

  • Why it matters: Dust and debris can accumulate on the surface and inside the device, potentially damaging sensitive components.
  • How to clean: Use a soft, lint-free cloth to wipe the exterior. For vents and hard-to-reach areas, use compressed air to remove dust.
  • Frequency: Clean the device every few weeks or as needed, depending on your environment.

2. Check for Firmware Updates

  • Why it matters: Firmware updates often include bug fixes, performance improvements, and compatibility upgrades.
  • How to update: Visit the manufacturer’s website to download the latest firmware. Follow the provided instructions for a safe installation process.
  • Frequency: Check for updates every 3-6 months or whenever you encounter performance issues.

3. Inspect Connections Regularly

  • Why it matters: Loose or damaged cables can result in inconsistent signals and compromised test results.
  • What to do: Regularly inspect all connectors and cables for wear, corrosion, or looseness. Replace damaged components promptly.
  • Tip: Use high-quality cables and connectors to minimize signal degradation.

4. Schedule Regular Calibration

  • Why it matters: Calibration ensures your pulse generator continues to provide accurate signals over time.
  • How to calibrate: Work with a certified calibration company to verify and adjust the device's performance.
  • Frequency: Schedule calibration annually or per the manufacturer’s recommendation.

Fast-Track Your Testing with Our Premium Refurbished Equipment

  • Like-new Condition
  • Updated Firmware
  • Full Calibration
  • New Accessories
  • Like-new Warranty
  • Customization possible

Learn more

  • Savings of up to 90%
  • Working Condition
  • Calibrated or Tested
  • 30-Day Right-of-Return
  • No Customization
  • Shipping to limited countries

Learn more

+15% Special Education Discount

Explore our certified used equipment, with up to 5 years warranty and an additional 15% discount exclusively for educators and researchers.

Why You Should
Work with Keysight
Up to 5 years
warranty
Add Hardware.
Enhance Software.
Personalized Service,
Local Team
Pioneering Quality
for 80+ Years
Save 40-90% on
Used Equipment
Latest Firmware
and Calibration

Select up to 3 instruments to compare

Cancel
Select another instrument to compare
Starting at
Select another instrument to compare
Starting at
Select another instrument to compare
Starting at

Enable Notifications

In order to use this feature, you need to enable notifications.

Manage notification preferences

USD


Conclusion

A pulse generator is an essential tool for precise circuit testing and system validation across various industries. Understanding key parameters, avoiding common mistakes, and leveraging advanced features like programmability can significantly improve your testing workflow. 
Whether you’re testing high-speed digital circuits, validating medical devices, or optimizing automotive systems, the right pulse generator ensures accuracy, efficiency, and reliability.
When it comes to selecting equipment, quality and cost matter. Opting for used, certified equipment can provide you with the performance you need while staying within budget. 
Explore Keysight’s Premium Used Equipment to find reliable, high-performance pulse generators and other essential testing tools at a fraction of the cost. All pre-owned devices come calibrated and quality-checked, so you can eliminate uncertainties from your test results while saving both time and money. 

Whenever You’re Ready, Here Are 4 Ways We Can Help You

  1. Browse our premium used network analyzers, oscilloscopes, signal analyzers and waveform generators
  2. Call tech support US: 1 800 829-4444
    Press #, then 2. Hours: 7am – 5pm MT, Mon– Fri
  3. Talk to our sales support team by clicking the icon (bottom right corner) on every offer page
  4. Create an account to get price alerts and access to exclusive waitlists
  5. Talk to your account manager about your specific needs

Subscribe to Get Our Latest News, Updates, and Articles.

Get Email Updates

Buy used signal generators from Keysight for peace of mind

  • Like-new Condition
  • Updated Firmware
  • Full Calibration
  • New Accessories
  • Like-new Warranty
  • Customization possible

Learn more

  • Savings of up to 90%
  • Working Condition
  • Calibrated or Tested
  • 30-Day Right-of-Return
  • No Customization
  • Shipping to limited countries

Learn more

Second-Hand. First-Class.

Great savings that come with a worry-free, first-class experience. That’s what buying used equipment directly from Keysight is all about!

Why You Should
Work with Keysight
Up to 5 years
warranty
Add Hardware.
Enhance Software.
Personalized Service,
Local Team
Pioneering Quality
for 80+ Years
Save 40-90% on
Used Equipment
Latest Firmware
and Calibration

Select up to 3 instruments to compare

Cancel
Select another instrument to compare
Starting at
Select another instrument to compare
Starting at
Select another instrument to compare
Starting at

Enable Notifications

In order to use this feature, you need to enable notifications.

Manage notification preferences

USD


FAQ

What is a signal generator?

A signal generator is a device that produces electrical signals of various types. Signal generators are used in many applications, such as testing electronics, generating tones for sound systems, and creating test signals with specific characteristics.

What are the advantages of signal generators?

Signal generators offer many benefits, such as the ability to create signals of all shapes and sizes, reduce interference between multiple generators, and adjust the output impedance to match the load impedance of the device under test.

What is the range of a signal generator?

The frequency range of a signal generator is the range of frequencies that the device can generate. Most inexpensive units only cover a small portion of the radio spectrum, while more expensive models offer broader coverage.

Are signal generators DC or AC?

Signal generators can generate both DC and AC signals. DC signals are used for low-frequency applications such as audio, while AC signals are used for high-frequency applications such as radio.