High-Performance Signal Generation with PXI
The Role of PXI in Modern Test and Measurement
In automated test and measurement, a reliable and precise signal source is essential for validating a device's response. A PXI Signal Generator (SigGen) is a modular instrument that creates a wide range of electrical waveforms from simple sine waves to complex modulated signals all within a unified PXI chassis. Unlike a manual benchtop instrument, a PXI SigGen is a fully programmable, high-speed signal source designed to provide the stimulus for your automated test sequences.
Key Features & Benefits of PXI Signal Generators
A PXI signal generator provides several key advantages that make it an indispensable tool for a wide range of automated test and validation tasks.
High-Speed Signal Generation:
PXI signal generators are capable of generating a broad spectrum of analog and digital waveforms with high accuracy and resolution. Their ability to switch quickly between signals and waveforms is critical for high-throughput testing in manufacturing and design validation.
Precise Synchronization:
A core strength of the PXI platform is its integrated timing and synchronization bus. This ensures the signal generator can be tightly synchronized with other modules, such as an oscilloscope or a DMM, to perform precise stimulus-response measurements. This level of coordination is vital for characterizing a device's performance under dynamic conditions.
Scalability & Channel Density:
The modular PXI platform allows you to add multiple signal generation channels to a single chassis. This high channel density is crucial for applications requiring simultaneous, multi-channel stimulus, such as testing of multiple inputs on a circuit board.
PXI vs. Benchtop: A Matter of Integration
While a traditional benchtop signal generator is perfect for manual debugging, a PXI signal generator is optimized for automation and system integration.
Throughput:
PXI SigGens are designed for high-speed data transfer over the PXI backplane, allowing for fast signal updates and generation loops within an automated test sequence.
System Integration:
A PXI SigGen is part of a larger, unified system. It's controlled by the same software (like LabVIEW or TestStand) as the power supply, DMM, and switches, which simplifies test development and reduces overall system complexity.
Signal Generation Comparison
Here's a comparison table highlighting four different types of signal generators:
Type of Signal Generator | Frequency Range | Applications | Advantages |
PXI Signal Generator | Up to 6 GHz | Automated testing, RF applications | High-speed, modular, scalable |
Benchtop Signal Generator | Up to 20 GHz | Manual testing, lab use | High precision, standalone |
Arbitrary Waveform Generator | Up to 3 GHz | Complex waveform synthesis, R&D | Flexible waveform creation, versatile |
USB Signal Generator | Up to 1 GHz | Portable applications, field testing | Compact, cost-effective |
This table summarizes the main features and benefits of each type of signal generator, helping you choose the right tool for your specific testing and measurement needs.
PXI Signal Generator Cards: Price and Feature Comparison
Below is a table that provides a comparison of several PXI Signal Generator (SigGen) cards, showcasing their price range and key features. This table includes a variety of options to suit different needs, from basic low-cost models to high-performance solutions.
Model | Price Range | Key Features |
|---|---|---|
PXI-5404 | $7,000-$8,000 | Basic function generator, 12-bit resolution, 300 MS/s sampling rate, sine, square, and triangle waves |
PXI-5423 | $9,000-$10,000 | 40MHz Bandwidth, 16-bit resolution, 800 MS/s, 1 or 2-channel, advanced waveform generation, waveform scripting and streaming, high dynamic range |
PXIe-5433 | $14,000-$15,000 | 80MHz Bandwidth, 16-bit resolution, 400 MS/s, dual-channel output, arbitrary waveform generation, flexible modulation |
PXIe-5745 | $22,000- $24,000 | 3GHz Bandwidth, 12-bit resolution, 6.4GS/s, FPGA FlexRio Card for real-time signal processing |
This comparison provides a snapshot of the varying capabilities and price points of PXI signal generators available in the market, helping you select the right tool for your specific testing and measurement needs.
Makkal's Expertise in Automated Signal Generation Solutions
We specialize in designing and implementing complete, automated test systems built on the NI PXI platform. Our expertise extends beyond simply providing a PXI signal generator. We deliver a fully integrated solution that leverages the power of LabVIEW and TestStand to automate your test sequences, analyze data in real time, and generate comprehensive reports. We ensure your system is optimized for both speed and reliability, giving you the confidence to tackle your most demanding test challenges