Oscilloscopes

What are oscilloscopes used for?

Oscilloscopes are essential tools for measuring and visualizing electrical signals in real time. They help engineers, technicians, and hobbyists analyze waveforms, detect signal anomalies, troubleshoot circuits, and test electronic devices.

From simple voltage checks to complex high-speed signal analysis, oscilloscopes provide critical insights into circuit behavior.

What are the Types of Oscilloscopes?

There are several types of oscilloscopes designed to meet different testing needs:

• Bench Oscilloscopes: Stationary, high-performance scopes used in labs and engineering setups.

• Handheld Oscilloscopes: Portable devices ideal for fieldwork and quick diagnostics.

• Digital Storage Oscilloscopes (DSO): Capture and store signals for detailed analysis.

• Analog Oscilloscopes: Traditional scopes that display real-time waveforms without digital storage.

PC-Based Oscilloscopes: Use a computer interface to display and analyze signals via software.

Oscilloscope Probes

Explore our wide selection of high-quality oscilloscope probes, designed for accurate signal measurement and reliable waveform analysis. Whether you need probes for bench oscilloscopes, handheld units, or high-speed digital storage scopes, we have the right solution for your testing needs.

Popular probes you can explore:

• LeCroy PP002 Oscilloscope Passive Probe, 350MHz, 10:1 – Ideal for general-purpose waveform testing.

• Agilent 10074C 10:1 10MΩ 150MHz Passive Probe – Reliable for precise voltage measurements.

• Tektronix TPP1000 1GHz Passive Probe 300V CATII – Perfect for high-frequency signals.

• Teledyne LeCroy PP006D 500MHz 10MΩ 10:1 Passive Probe – Designed for advanced oscilloscope applications.

What is an example of an oscilloscope?

A widely used example is the Tektronix MSO72304DX, a 23 GHz, 100 Gs/s digital storage oscilloscope. It’s known for its high-speed signal capture, advanced analysis features, and support for serial pattern testing, making it suitable for high-frequency electronics and communication systems.

What's the difference between an oscilloscope and a multimeter?

An oscilloscope and a multimeter both measure electrical signals, but they serve different purposes:

• Oscilloscope: Visualizes signals over time, showing waveform shape, frequency, and amplitude. Ideal for dynamic and complex signal analysis.

• Multimeter: Measures static electrical values like voltage, current, and resistance. Best for simple diagnostics and continuity checks.
  In short, oscilloscopes show how signals change, while multimeters give numerical values.

What basic factors should I consider when purchasing a DSO?

When buying a digital storage oscilloscope (DSO), it’s important to evaluate both your current and future needs so you choose the right tool for your work. Key factors to consider include:

• Purpose & accuracy: Think about how you’ll use the oscilloscope, whether for basic debugging, precise measurements, or advanced signal analysis, and choose a model with the accuracy and performance that matches your projects. 

• Bandwidth & sample rate: These directly impact how well the oscilloscope captures fast signals. Higher bandwidth and sample rates offer clearer waveform detail.

• Features and expandability: Look for helpful features like automatic measurements, math functions, triggering options, and the ability to add memory or software upgrades as your needs grow.

• Size & portability: Bench oscilloscopes suit lab work, while handheld or compact units are ideal if you need to carry your oscilloscope between locations.

• Budget: Set a realistic budget that balances price with the performance and oscilloscope price range you need, more advanced models cost more but also add capability and longevity. 

These considerations help you find a DSO that delivers reliable, accurate waveform insights for years to come.

What are the technical differences between different oscilloscopes?

Oscilloscopes vary widely in technical capability, and understanding these differences will help you choose a model that fits your application:

• Bandwidth: Indicates the maximum signal frequency the oscilloscope can measure accurately. Higher bandwidth lets you capture faster signal components with less attenuation.

• Sample Rate: This is how many samples per second the oscilloscope can take. Higher sample rates mean finer detail in waveform capture, similar to a higher frame rate in video.

• Rise Time: Important for digital signals, rise time affects how precisely an oscilloscope shows fast transitions like pulses.

• Input Channels: Oscilloscopes can have 2, 4, or more channels, allowing you to monitor multiple signals simultaneously.

• Triggering Capabilities: A good triggering system stabilizes complex signals, helping you isolate specific events with edge, logic, pulse, and video triggers.

• Record Length & Memory Depth: Determines how much signal data the oscilloscope can store. More memory lets you examine longer time spans at high resolution.

• User Interface & Analysis Tools: Advanced scopes offer zoom, search, measurement automation, math functions (FFT, integration, etc.), and PC connectivity for deeper analysis.

Together, these features define how powerful, precise, and usable an oscilloscope will be for your specific measurement needs.

Can a PC be used as an oscilloscope?

Yes, a PC can function as an oscilloscope when paired with a compatible USB or PCI-based oscilloscope interface. The computer runs software to capture, display, and analyze electrical signals.

PC-based oscilloscopes are cost-effective, portable, and convenient for general testing, though they may not match the speed or precision of high-end bench oscilloscopes.

FAQs - Oscilloscope 

What is an oscilloscope?

An oscilloscope is an electronic test instrument that graphically displays electrical signals, showing how they change over time.

What is an oscilloscope used for?

It’s used to visualize and analyze waveforms in circuits, helping with design, troubleshooting, verification, and repair of electronic equipment.

How does an oscilloscope work?

It captures a signal via a probe, then uses vertical, horizontal and trigger systems to reconstruct and display the waveform on a screen.

How does an oscilloscope measure voltage?

The oscilloscope reads voltage through its input probe and plots voltage on the vertical axis versus time on the horizontal axis.

What does an oscilloscope measure?

Primarily voltage over time, but with the right setup it also helps measure frequency, current (via probes), capacitance, and more.

How does an oscilloscope measure frequency?

It measures frequency by calculating the number of waveform cycles per second, often automatically or by using 1/period = frequency.

How can an oscilloscope measure current?

By using a current probe or measuring the voltage drop across a known resistor (shunt), current can be derived.

What are the different types of oscilloscopes?

Types include analog and digital, with digital variants like digital storage, digital phosphor, mixed signal and mixed domain oscilloscopes.

What is a mixed signal oscilloscope?

A mixed signal oscilloscope (MSO) captures and displays both analog and digital signals at the same time.

What is a mixed domain oscilloscope?

A mixed domain oscilloscope (MDO) combines analog/digital signal display with an integrated spectrum analyzer for RF measurements.

How to use an oscilloscope?

Connect the probe to the circuit, adjust vertical and time scales, set triggering, and interpret the waveform on screen.

How to choose an oscilloscope?

Consider bandwidth, sample rate, channels, features (like MSO/MDO), display, and oscilloscope price based on your measurement needs.

How much does an oscilloscope cost?

Prices vary widely, from affordable handheld or entry‑level digital scopes to high‑performance benchtop units costing significantly more, depending on features and performance.