NI PXI-5122
NI PXI-5122
NI PXI-5122
NI PXI-5122

NI PXI-5154 | 2.5 GS/s High-Speed Digitizer

  • Brand:​ National Instruments
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    Model:​ PXI-5154
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    Product Type:​ PXI Digitizer / Oscilloscope Module
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    Series:​ PXI
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    Core Function:​ Provides enhanced high-speed data acquisition with increased bandwidth and sampling rate for capturing very fast transient signals.
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    Key Specs:​ 2.5 GS/s sampling rate, 1.5 GHz bandwidth, 8-bit resolution, 128 MB/channel memory.
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Part number: NI PXI-5154
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Description

PXI-5154: Product Overview
The National Instruments PXI-5154 is an enhanced high-speed digitizer module designed for the PXI platform, representing an upgrade to the PXI-5153 with improved bandwidth and sampling capabilities. This instrument serves as a high-performance oscilloscope replacement for applications requiring capture of extremely fast transient signals and very high-frequency waveform components. Its primary function is to digitize analog signals with exceptional temporal resolution, making it suitable for characterizing advanced high-speed digital communications, high-resolution radar systems, and other sub-nanosecond scale phenomena.
Installed in a PXI chassis, the module operates by simultaneously sampling two input channels at rates up to 2.5 gigasamples per second (GS/s), providing enhanced resolution for capturing signal transitions and high-frequency components compared to previous models. Each channel utilizes an 8-bit analog-to-digital converter optimized for maximum speed while maintaining signal integrity. The architecture includes deep, segmented memory that allows for extended record lengths or the capture of multiple triggered events with minimal dead time. The module supports advanced triggering options including edge, glitch, window, and video triggering to isolate specific signal events within complex waveforms.

NI PXI-5122

NI PXI-5122

PXI-5154: Technical Specifications
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    Model Number:​ PXI-5154
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    Manufacturer:​ National Instruments
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    Product Type:​ PXI Digitizer / Oscilloscope Module
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    Number of Channels:​ 2 simultaneously sampled channels
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    Maximum Sampling Rate:​ 2.5 GS/s (real-time)
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    Resolution:​ 8 bits
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    Bandwidth:​ 1.5 GHz (-3 dB)
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    Input Ranges:​ Software-selectable, from ±0.1 V to ±5 V full scale
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    Input Impedance:​ 50 Ω ± 1% || 1 pF typical
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    Memory Depth:​ 128 MB standard per channel (256 MB total)
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    Vertical Resolution:​ 8 bits (256 levels)
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    Accuracy:​ ±2% of reading ±2% of range (typical)
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    Coupling:​ DC
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    Triggering:​ Edge, glitch, window, video, and digital triggering
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    Trigger Sensitivity:​ <10 mV
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    Rise Time:​ <233 ps (typical)
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    Synchronization:​ PXI trigger lines, 10 MHz reference clock input
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    Data Transfer:​ PXI Direct Memory Access (DMA)
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    Operating Temperature:​ 0°C to 55°C
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    Power Consumption:​ 12 W typical

    NI PXI-5122

Core Features & Customer Value
Enhanced Bandwidth and Sampling Rate: The increased 1.5 GHz bandwidth and 2.5 GS/s sampling rate provide improved temporal resolution compared to previous models. For engineers working with cutting-edge high-speed digital systems, advanced radar, or high-data-rate communications, this enhanced capability ensures more accurate capture of signal details with faster rise times. The benefit is improved measurement fidelity for signals with transition times below 300 ps, which is critical for characterizing next-generation electronic systems.
Advanced Triggering Capabilities: The inclusion of video triggering in addition to edge, glitch, and window triggering expands the module’s applicability to video system testing and complex sync signal analysis. This allows engineers to trigger on specific video lines or fields, making the instrument suitable for testing video processing equipment alongside its high-speed digital and RF applications. The sophisticated triggering system reduces the amount of irrelevant data captured, focusing acquisition memory on the events of interest.
Deep Segmented Memory Architecture: The substantial onboard memory per channel, organized in a segmented architecture, supports extended acquisition windows at the maximum sample rate while enabling efficient capture of burst-mode signals. This is particularly valuable for applications like pulsed radar testing, where long sequences of pulses need to be captured and analyzed with minimal dead time between acquisitions. The memory management system allows for optimal use of available storage by capturing only signal activity periods.
Typical Applications
In advanced radar system testing, the module captures high-resolution RF pulses with precise timing measurements for pulse compression analysis, chirp signal characterization, and high-range-resolution profiling.
For high-speed serial data communications validation, the digitizer performs signal integrity measurements on multi-gigabit serial links such as PCI Express, SATA, and Ethernet, generating accurate eye diagrams for compliance testing and debugging.
In scientific research applications, the instrument acquires signals from ultra-fast detectors in particle physics experiments or spectroscopy systems where picosecond timing resolution is required for time-correlated single-photon counting.

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