Red Pitaya STEMlab 125-14 Starter Kit IZD0007 125MS/s 14-Bit

The Red Pitaya STEMlab 125-14 Starter Kit, manufacturer part number IZD0007, is a compact programmable measurement, signal-generation, software-defined radio, and FPGA development platform. It combines two 14-bit 125MS/s analog inputs, two 14-bit 125MS/s analog outputs, a dual-core ARM Cortex-A9 processor, AMD Xilinx Zynq-7010 FPGA, Gigabit Ethernet, and flexible expansion interfaces in a single development board.

Designed for electronics development, RF experimentation, laboratory automation, education, research, and embedded measurement systems, the STEMlab 125-14 can replace several conventional bench instruments while also serving as a customizable DSP, DAQ, FPGA, and SDR development platform.

Dual 14-Bit 125MS/s Analog Inputs

The STEMlab 125-14 provides two simultaneous high-speed analog input channels based on the LTC2145-14 ADC. Each channel offers 14-bit resolution at up to 125MS/s, providing the acquisition performance required for oscilloscopes, spectrum analysis, signal monitoring, RF experiments, and high-speed data-acquisition applications.

• 2 simultaneous analog input channels
• 14-bit ADC resolution
• 125MS/s sampling rate per channel
• DC to 60MHz analog bandwidth
• Selectable ±1V and ±20V full-scale input ranges
• DC-coupled inputs
• 1MΩ input impedance

Dual 14-Bit 125MS/s Signal Outputs

Two high-speed analog outputs based on the AD9767 DAC allow the board to generate arbitrary waveforms and test signals directly from its FPGA and software environment.

• 2 analog output channels
• 14-bit DAC resolution
• 125MS/s generation rate
• DC to 60MHz output bandwidth
• ±1V full-scale output range
• 50Ω load impedance
• Short-circuit protection

AMD Xilinx Zynq-7010 FPGA and ARM Cortex-A9

The STEMlab 125-14 integrates an AMD Xilinx Zynq-7010 SoC containing programmable FPGA logic and a dual-core ARM Cortex-A9 processor.

This architecture allows real-time signal-processing tasks such as triggering, digital filtering, waveform generation, modulation, demodulation, and custom DSP algorithms to operate in FPGA hardware while Linux applications, networking, control software, and user programs run on the ARM processor.

512MB RAM and microSD Storage

The board includes 512MB of system RAM and boots its operating system from a microSD card. The Starter Kit includes a 16GB Class 10 microSD card prepared for use with the Red Pitaya software environment.

Oscilloscope and Signal Generator

The STEMlab 125-14 can operate as a network-connected two-channel oscilloscope and arbitrary waveform generator. Signals can be viewed and generated through Red Pitaya's browser-based software without requiring a conventional standalone oscilloscope.

Spectrum Analyzer

Frequency-domain analysis tools allow users to inspect the spectral content of acquired signals, identify frequency components, evaluate harmonics, monitor RF activity, and perform general signal-analysis experiments.

Bode Analyzer

The integrated inputs and outputs can be used to characterize the frequency response of filters, amplifiers, control systems, and other devices under test by measuring gain and phase over frequency.

Software Defined Radio

The STEMlab 125-14 Starter Kit includes access to Red Pitaya SDR functionality and can be used for software-defined radio development and experimentation. The platform is compatible with SDR ecosystems including GNU Radio and HPSDR-based applications.

Its programmable FPGA architecture also allows experienced developers to implement custom receivers, transmitters, filters, demodulators, and other real-time RF processing functions.

Vector Network Analyzer Capability

Red Pitaya provides VNA software support for the STEMlab 125-14. A compatible external VNA module is required for the complete vector network analyzer hardware setup. This can be used for measurements involving antennas, filters, and other RF components.

High-Speed Data Streaming

Measurement data can be streamed continuously to the microSD card or to a remote computer, making the board suitable for long-duration data acquisition, signal logging, automated experiments, and remote monitoring systems.

Gigabit Ethernet and Optional Wi-Fi

The STEMlab 125-14 can be accessed remotely through its 1Gbit Ethernet interface. A compatible USB Wi-Fi dongle can also be used when wireless network access is required.

• 1Gbit Ethernet
• USB 2.0
• Optional Wi-Fi using a compatible USB dongle
• Browser-based remote operation
• Network-controlled measurement and development environment

Works Across Major Operating Systems

Because many Red Pitaya applications are browser-based, the STEMlab can be accessed from systems running Windows, Linux, macOS, Android, iOS, and other platforms with a compatible web browser.

Remote Programming and Automation

The board can be integrated into automated test systems, research environments, and custom applications using commonly used engineering and scientific programming tools.

• Python
• C
• MATLAB
• LabVIEW
• Scilab
• SCPI-based remote control
• Jupyter Notebook workflows

Logic Analyzer Capability

The Red Pitaya software ecosystem supports logic-analysis applications capable of capturing and decoding common digital interfaces including I2C, SPI, UART, and CAN.

Logic analyzer probes and the dedicated logic analyzer extension module are optional accessories and are not included with the standard Starter Kit.

FPGA and Open-Source Development

The STEMlab 125-14 is more than a fixed-function test instrument. Developers can modify existing applications, create custom web applications, implement DSP algorithms in C, and develop new FPGA functionality using AMD Xilinx Vivado tools.

This flexibility makes the platform suitable for prototyping specialized measurement equipment, embedded instrumentation, communication systems, signal-processing algorithms, and research hardware.

Extension and Expansion Interfaces

• 16 digital I/O lines
• 4 auxiliary analog inputs
• 12-bit auxiliary ADC resolution
• 0–3.5V auxiliary analog input range
• 4 auxiliary analog outputs
• 12-bit auxiliary DAC resolution
• 0–1.8V auxiliary analog output range
• I2C
• SPI
• UART
• Trigger input through extension connector
• SATA-based daisy-chain connection
• Available -4V, +3.3V and +5V rails

Key Features

• Red Pitaya STEMlab 125-14 Starter Kit
• Manufacturer part number IZD0007
• AMD Xilinx Zynq-7010 SoC
• Dual-core ARM Cortex-A9 processor
• Programmable FPGA architecture
• 512MB system RAM
• 2 × 14-bit 125MS/s analog inputs
• 2 × 14-bit 125MS/s analog outputs
• DC to 60MHz analog input bandwidth
• DC to 60MHz analog output bandwidth
• Selectable ±1V / ±20V input ranges
• 1Gbit Ethernet
• USB 2.0
• Optional Wi-Fi connectivity
• Oscilloscope and signal generator
• Spectrum analyzer
• Bode analyzer
• Logic analyzer software support
• Software defined radio capability
• VNA software support with optional external module
• Continuous data streaming
• Python and Jupyter development support
• MATLAB and LabVIEW integration
• Open-source and FPGA development capabilities

Technical Specifications

Typical Applications

• Oscilloscope and waveform generation
• Spectrum and frequency-domain analysis
• Software-defined radio
• RF experimentation
• Ham radio projects
• Digital signal processing
• High-speed data acquisition
• Automated test and measurement
• Electronics development
• Filter and amplifier characterization
• Control-system development
• Embedded instrumentation
• FPGA development
• University laboratories and teaching
• Scientific and industrial research
• Remote measurement systems

What's in the Box?

• 1 × Red Pitaya STEMlab 125-14 digitizer board
• 1 × 16GB Class 10 microSD card
• 1 × 1m Ethernet cable
• 1 × 5V / 2A power supply

Starter Kit Accessory Notice

The standard IZD0007 Starter Kit does not include the aluminium enclosure, Wi-Fi dongle, diagnostic accessory set, logic analyzer probes, logic analyzer extension module, LCR meter extension module, or VNA external module. These accessories can be added separately if required.

STEMlab 125-14 vs Newer Gen 2 Models

IZD0007 is the established original STEMlab 125-14 platform using the Zynq-7010 SoC. It should not be confused with the newer STEMlab 125-14 PRO Gen 2 or PRO Z7020 Gen 2 models. The original model remains a strong choice for users who want an established, flexible and cost-effective Red Pitaya platform with mature SDR and test-and-measurement software support.