Logic Pro Spectrum Analyzer
Jonathan Garcia
Supported by the advanced PicoScope software, these devices offer an ideal, cost-effective package for many applications, including embedded systems design, research, test, education, service, and repair.
Despite a compact size and low cost, there is no compromise on performance with bandwidths up to 200 MHz. This bandwidth is matched by a real-time sampling rate of up to 1 GS/s, allowing detailed display of high frequencies. For repetitive signals, the maximum effective sampling rate can be boosted to 10 GS/s by using Equivalent Time Sampling (ETS) mode.
Other oscilloscopes have high maximum sampling rates, but without deep memory they cannot sustain these rates on long timebases. The PicoScope 3000 Series offers memory depths up to 512 million samples, more than any other oscilloscope in this price range, which enables the PicoScope 3406D MSO to sample at 1 GS/s all the way down to 50 ms/ div (500 ms total capture time).
The digital inputs bring extra power to the serial decoding options. You can decode serial data on all analog and digital channels simultaneously, giving you up to 20 channels of data. You can for example decode multiple SPI, IC, CAN bus, LIN bus and FlexRay signals all at the same time!
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 in to investigate noise or signal integrity issues.
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.
All PicoScope 3000D units have a built-in function generator (sine, square, triangle, DC level, white noise, PRBS etc.) on the front panel. PicoScope 3000D MSO models have the connector on the rear panel.
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.
A 14 bit 80 MS/s arbitrary waveform generator (AWG) is also included. AWG waveforms can be created or edited using the built-in AWG editor, imported from oscilloscope traces, or loaded from a spreadsheet.
The spectrum view plots amplitude against frequency and is ideal for finding noise, crosstalk or distortion in signals. The spectrum analyzer in PicoScope is of the Fast Fourier Transform (FFT) type which, unlike a traditional swept spectrum analyzer, can display the spectrum of a single, non-repeating waveform.
You can display multiple spectrum views alongside oscilloscope views of the same data. A comprehensive set of automatic frequency-domain measurements can be added to the display, including THD, THD+N, SNR, SINAD and IMD. A mask limit test can be applied to a spectrum and you can even use the AWG and spectrum mode together to perform swept scalar network analysis.
We are proud of the dynamic performance of our products, and unlike most oscilloscope manufacturers publish our specifications in detail. The result is simple: when you probe a circuit, you can trust in the waveform you see on the screen.
The USB connection not only allows high-speed data acquisition and transfer, but also makes printing, copying, saving, and emailing your data from the field quick and easy. USB powering removes the need to carry around a bulky external power supply, making the kit even more portable for the engineer on the move.
PicoScope 3000 Series oscilloscopes feature a SuperSpeed USB 3.0 connection, making the already-optimized process of data transfer and waveform update rates even faster. Further benefits of a USB 3.0 connection include faster saving of waveforms and faster gap-free continuous streaming of up to 125 MS/s when using the SDK, while the scope is still backward-compatible with older USB systems.
The other common names of a logic analyzer are the logic probe, digital logic analyzer, signal logic analyzer, state analyzer, logic state analyzer, mixed-signal analyzer, digital circuit analyzer, data logger, logic signal viewer, protocol analyzer, timing analyzer, bus analyzer, pattern generator, debugging tool, digital data analyzer, FPGA logic analyzer, microcontroller logic analyzer, embedded system analyzer, real-time logic analyzer, high-speed logic analyzer, PC-based logic analyzer, USB logic analyzer, benchtop logic analyzer, oscilloscope logic analyzer, serial protocol analyzer, FPGA debugging tool, JTAG analyzer, boundary scan tool, automated test equipment (ATE) and bus traffic analyzer.
If you're wondering where to buy an oscilloscope or how to buy an oscilloscope, you've come to the right place. Digilent Analog Discovery 2 is a USB oscilloscope, logic analyzer, and multi-function instrument that allows users to measure, visualize, generate, record, and control mixed-signal circuits of all kinds. Despite our competitive oscilloscope price, we never compromise on quality. Developed in conjunction with Analog Devices and supported by Xilinx University Program, this compact oscilloscope is small enough to be a pocket oscilloscope, but powerful enough to replace a stack of lab oscilloscopes and equipment, providing engineering professionals, students, hobbyists, and electronic enthusiasts the freedom to work with analog and digital circuits in virtually any environment, in or out of the lab. The analog and digital inputs and outputs can be connected to a circuit using simple wire probes; alternatively, the Analog Discovery BNC Adapter and BNC probes can be used to connect and utilize the inputs and outputs.
Driven by the free WaveForms software (Mac, Linux, and Windows compatible), this small oscilloscope can be configured to work as any one of several traditional test and measurement instruments including an Oscilloscope, Waveform Generator, Power Supply, Voltmeter, Data Logger, Logic Analyzer, Pattern Generator, Static I/O, Spectrum Analyzer, Network Analyzer, Impedance Analyzer, Protocol Analyzer, and Curve Tracer.
When you buy an oscilloscope from Digilent, you can be confident that you're getting an excellent product from a trusted brand. We're committed to providing our customers with the best possible experience, whether you're a student just starting out or a seasoned professional. We also offer the best oscilloscope price on the market for verified academic accounts, so if you're looking to reduce the oscilloscope cost, head over to our academic verification page for more information. If you're an international customer, we have a network of authorized oscilloscope distributors that may have better shipping options. To find an oscilloscope distributor near you, you can select the distributor button above or visit our Affiliations page.
The Analog Discovery 2 oscilloscope is designed to be a portable alternative to a stack of benchtop equipment. It's durable enclosure measures (3.23 inch x 3.25 inch x7/8 inch) and fits in a pocket. The Digilent Discovery 2 can be connected to circuits and designs via the included female flywires, or used in conjunction with the included gender changers when a male connection is necessary.
Accessories can be purchased separately to provide additional functionality, such as the BNC Adapter for higher bandwidth and BNC connectors, or the Breadboard Adapter and Breadboard Breakout for a direct connection to the breadboard, or the Impedance Analyzer for additional Impedance measurement functionality. The Analog Discovery 2 comes packaged in a durable project box that will fit all the included accessories and some additional adapter boards. The project box measures (7" x 5.75" x 1.5") and provides even more durability when stashing your portable Oscilloscope and multi-function instrument in your backpack or briefcase.
WaveForms is the free software application for the Analog Discovery 2 and enables use of the available analog and digital instruments. The software has been refined by customer feedback for over 10 years and features a computer and laptop friendly user interface that has the feel of traditional benchtop software. The Analog Discovery 2 communicates with WaveForms via a USB connection to your computer, allowing users to capture, record, analyze, and generate mixed signal and mixed domain waveforms. WaveForms can be downloaded and installed in under 60 seconds and can be tested without hardware using its demo mode feature. In addition to the use of instruments in the application, the WaveForms application has a script editor tool, which allows custom scripting of the instrument in JavaScript. WaveForms is designed to be run on a laptop or desktop computer and is Mac, Windows, and Linux compatible.
For even more customization potential, the WaveForms Software Development Kit (SDK) can be used to create custom applications and scripts in Python, C, and additional languages. The Analog Discovery 2 is also compatible with LabVIEW and the Digilent Toolbox for compatibility with MathWorks' MATLAB Data Acquisition Toolbox
Just as the oscilloscope is the instrument of choice for analog electronics, and the spectrum analyzer is preferred for RF measurement, the logic analyzer is the go-to instrument for digital system designers.
Equipped with multiple channels, the logic analyzer characterizes the data state and timing of a large number of digital signals. Typically, these digital measuring instruments offer 16, 32, 64, or a greater number of input channels that can be displayed in a variety of formats. Among these display formats are timing diagrams, state diagrams, protocol decodes, and assembly code.
Logic analyzers come in a range of form factors, including instrument, modular, and computer-based packages. Instrument-format logic analyzers are housed in traditional, standalone cases just like an oscilloscope or spectrum analyzer (Fig. 1).
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