Pico 4224 - PicoScope 20 MHz, 12-bit, 2-Channel Oscilloscope

PicoScope 4000 Series High Resolution Oscilloscopes

High resolution offers 16x more detail

The PicoScope 3425 is a 12 bit oscilloscope that offers 16 times more vertical resolution than traditional 8 bit oscilloscopes (4096 vertical levels vs 256). The example shows how with a 12 bit oscilloscope (blue trace) you can zoom in to reveal details of the signal that are not visible on an 8 bit oscilloscope (black trace).

As well as the high vertical resolution, the 512,000 sample buffer memory ensures a high horizontal resolution as well. You can collect long detailed captures without the sampling rate dropping.

Once you have seen high-resolution waveforms on a high-resolution PC monitor you will never want to use a traditional benchtop oscilloscope with its small display again.

As well as improved oscilloscope traces, high resolution offers big benefits when performing spectrum analysis offering an additional 20 dB dynamic range on the spectrum over 8 bit oscilloscopes. Signals that were previously hidden in the noise floor are now clearly visible and the spectrum becomes a powerful tool to track down the causes of noise.

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.

PicoScope 4224 & 4424 Features

Advanced digital triggers

The majority of digital oscilloscopes still use an analog trigger architecture based on comparators. This causes time and amplitude errors that cannot always be calibrated out and often limits the trigger sensitivity at high bandwidths.

Over 20 years ago Pico first pioneered the use of fully digital triggering using the actual digitized data. This technique reduces trigger errors and allows our oscilloscopes to trigger on the smallest signals, even at the full bandwidth. Trigger levels and hysteresis can be set with high precision and resolution.

The PicoScope 3425 offers an industry-leading set of advanced triggers including pulse width, windowed and dropout.

Waveform buffer

PicoScope oscilloscope software has the ability to store more than one waveform in its waveform buffer. Depending on the settings you have chosen, PicoScope can store from 1 to 10,000 waveforms in its buffer.

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.

Digital persistence modes

Advanced display modes allow you to collect thousands of waveforms per second. New or more frequent data can be displayed in a brighter color or shade. This makes it easy to see glitches and dropouts and to estimate their relative frequency. Choose between analog persistence, digital color, fast or custom display modes.

Mask limit testing

Mask limit testing is a feature that tells you when a waveform or spectrum goes outside a specified area, called a mask.

This feature is specially designed for production and debugging environments. Capture a signal from a known working system, and PicoScope will draw a mask around it with your specified tolerance. Connect the system under test, and PicoScope will highlight any parts of the waveform that fall outside the mask area. The highlighted details persist on the display, allowing the scope to catch intermittent glitches while you work on something else. The measurements window counts the number of failures, and can display other measurements and statistics at the same time.

Digital persistence modes

PicoScope can decode CAN, FlexRay, I²C, I²S, RS-232/UART, SPI, and USB protocol data as standard. Expect this list to grow with future free software upgrades.

In graph format shows the decoded data (in hex, binary, decimal or ASCII) in a data bus timing format, beneath the waveform on a common time axis, with error frames marked in red. These frames can be zoomed to investigate noise or signal integrity issues.

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 and segmented memory 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.