Pico 4262 - PicoScope 2 Channel, 16-bit Oscilloscope with 2 probes

High-Resolution USB Oscilloscope

A digital oscilloscope for the analog world

Most digital oscilloscopes have been designed for viewing fast digital signals. The trend has been to use new technology solely to increase sampling rate and bandwidth. With the PicoScope 4262, however, we have focused on what’s important for measuring analog signals: increasing the resolution, improving dynamic range, and reducing noise and distortion.

The result is an oscilloscope / FFT analyzer that has a level of performance to put most audio analyzers to shame yet has a 5 MHz bandwidth making it equally suitable for vibration and ultrasound signals as well as a wide range of precision measurement tasks.

Many applications such as vibration analysis require long captures at high sampling rates, which requires a deep capture memory. The PicoScope 4262 has a 16 million sample buffer memory so can capture at 10 MS/s for timebases as long as 100 ms/div. If you require longer times, the USB streaming mode can sample directly into PC memory.

Advanced display

PicoScope software dedicates almost all of the display area to the waveform. This ensures that the maximum amount of data is seen at once. The viewing area is much bigger and of a higher resolution than with a traditional benchtop scope. With a large display area available, you can also create a customizable split-screen display, and view multiple channels or different views of the same signal at the same time. As the example opposite shows, the software can even show both oscilloscope and spectrum analyzer traces at once. Additionally, each waveform shown works with individual zoom, pan, and filter settings for ultimate flexibility.

The PicoScope software can be controlled by mouse, touchscreen or keyboard shortcuts.

FFT spectrum analyzer

Unlike the oscilloscope views which display amplitude vs time, the spectrum view reveals new detail by plotting amplitude vs frequency. The spectrum view is ideal for finding the cause of noise or crosstalk in a signal which often looks random in the time domain. It is also often the best mode for testing distortion, frequency response and stability of amplifiers, filters and oscillators. The spectrum analyzer in PicoScope is of the Fast Fourier Transform (FFT) type which, unlike a traditional swept spectrum analyzer, has the ability to display the spectrum of a single, non-repeating waveform.

PicoScope oscilloscopes have low-noise, low-distortion front-end designs and our high-resolution scopes offer exceptional levels of dynamic range (> 100 dB SFDR for the PicoScope 4262). This makes them capable of revealing signal details that other scope and dedicated analyzers miss.

Arbitrary waveform and function generator

The PicoScope 4262 has a built in 20 kHz function generator (sine, square, triangle, DC voltage, ramp, sinc, Gaussian, half–sine, white noise and PRBS). The function generator offers and outstanding sine wave distortion performance of 102 dB SFDR to match the performance of the oscilloscope / spectrum analyzer.

As well as basic controls to set level, offset and frequency, more advanced controls allow you to sweep over a range of frequencies. Combined with the spectrum peak hold option this makes a powerful tool for testing amplifier and filter responses.

Trigger tools allow one or more cycles of a waveform to be output when various conditions are met such as the scope triggering or a mask limit test failing.

As well as the standard waveforms available from the function generator, custom waveforms can be created using the 16 bit / 192 kS/s arbitrary waveform generator (AWG). AWG waveforms can be created or edited using the built-in editor, imported from oscilloscope traces, or loaded from a spreadsheet.

High signal integrity

Most oscilloscopes are built down to a price. Ours are built up to a specification.

Careful front-end design and shielding reduces noise, crosstalk and harmonic distortion. Over 20 years of high resolution oscilloscope design experience leads to improved pulse response and bandwidth flatness.

We are proud of the dynamic performance of our products and publish these specifications in detail. The result is simple: when you probe a circuit, you can trust in the waveform you see on the screen.

PicoScope 4262 Features

The PicoScope 4262 Series is fitted with second-generation hardware acceleration (HAL2). This speeds up areas of oscilloscope operation such as allowing waveform update rates in excess of 100,000 waveforms per second and the segmented memory / rapid trigger modes. The hardware acceleration engine ensures that any concerns about the USB connection or PC processor performance being a bottleneck are eliminated.

When you click the Start button or change a capture setting, PicoScope clears the buffer and then adds a new waveform to it every time the oscilloscope captures data. This continues until the buffer is full or you click the Stop button. Once you have stopped capturing data, you can then review each captured waveform to find the event you want. You can also save the whole buffer and examine it at a later date.

In table format shows a list of the decoded frames, including the data and all flags and identifiers. You can set up filtering conditions to display only the frames you are interested in or search for frames with specified properties. The statistics option reveals more detail about the physical layer such as frame times and voltage levels. PicoScope can also import a spreadsheet to decode the data into user-defined text strings.

High-end features as standard

Buying a PicoScope is not like making a purchase from other oscilloscope companies, where optional extras considerably increase the price. With our scopes, high-end features such as serial decoding, mask limit testing, advanced math channels, segmented memory, and a signal generator are all included in the price.

To protect your investment, both the PC software and firmware inside the scope can be updated. Pico Technology have a long history of providing new features for free through software downloads. We deliver on our promises of future enhancements year after year, unlike many other companies in the field. Users of our products reward us by becoming lifelong customers and frequently recommending us to their colleagues.
 

PicoScope 4262 High resolution oscilloscope software

Math channels and filters

On many oscilloscopes waveform math just means simple calculations such as A + B. With a PicoScope it means much, much more.

With PicoScope 6 you can select simple functions such as addition and inversion, or open the equation editor to create complex functions involving filters (low pass, high pass, band pass and band stop filters), trigonometry, exponentials, logarithms, statistics, integrals and derivatives.

Waveform math also allows you to plot live signals alongside historic peak, averaged or filtered waveforms. You can also use math for example to graph the changing duty cycle or frequency of your signal.

With PicoScope math channels you can display up to eight real or calculated channels in each scope view. If you run out of space, just open another scope view and add more.

Custom probes in PicoScope oscilloscope software

The custom probes feature allows you to correct for gain, attenuation, offsets and nonlinearities in probes, sensors or transducers that you connect to the oscilloscope.

A simple use would be to linearly scale the output of a current probe so that it correctly displays amperes. A more advanced use would be to scale the output of a nonlinear temperature sensor using the table lookup function.

Definitions for standard Pico-supplied oscilloscope probes and current clamps are included. User-created probes may be saved for later use.

High-speed data acquisition and digitizing

The software development kit (SDK) allows you to write your own software and includes drivers for Microsoft Windows, Apple Mac (OS X) and Linux (including Raspberry Pi and BeagleBone).

Example code shows how to interface to third-party software packages such as Microsoft Excel, National Instruments LabVIEW and MathWorks MATLAB.

The drivers support USB data streaming, a mode which captures gap-free continuous data over USB direct to the PC’s RAM or hard disk at rates of up to 10 MS/s. Capture size is limited only by available PC storage. Sampling rates in streaming mode are subject to PC specifications and application loading.

Powerful tools provide endless options

Your PicoScope is provided with many powerful tools to help you acquire and analyze waveforms. While these tools can be used on their own, the real power of PicoScope lies in the way they have been designed to work together.

As an example, the rapid trigger mode allows you to collect 10,000 waveforms in a few milliseconds with minimal dead time between them. Manually searching through these waveforms would be time consuming, so just pick a waveform you are happy with and let the mask tools scan through for you. When done, the measurements will tell you how many have failed and the buffer navigator allows you to hide the good waveforms and just display the problem ones. This video shows you how.

Perhaps instead you want to plot changing duty cycle as a graph? How about outputting a waveform from the AWG and also automatically saving the waveform to disk when a trigger condition is met? With the power of PicoScope the possibilities are almost endless.