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PXIE-5122

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PXIE-5122
May 27, 2026

PXIE-5122

The PXIe‑5122 is a 2‑channel, 14‑bit, 100 MHz PXI oscilloscope/digitizer from National Instruments, delivering high resolution, low noise, and deep memory in a single‑slot 3U PXIe form factorNI. It supports 100 MS/s real‑time sampling per channel with >75 dBc SFDR, making it ideal for time‑ and frequency‑domain measurements requiring precision and dynamic rangeNI.

Description

Model Nomenclature

  • PXIe: PXI Express high‑speed modular bus

  • 51: PXI oscilloscope/digitizer series

  • 22: 2 channels, 100 MHz bandwidth, 100 MS/s, 14‑bit, deep memory

Technical Specifications

  • Form factor: 3U single‑slot PXIe module

  • Channels: 2 simultaneous sampled analog inputs

  • Resolution: 14 bits (no missing codes)

  • Bandwidth: 100 MHz (–3 dB)NI

  • Sample rate: 100 MS/s real‑time; 2 GS/s random interleaved

  • Input impedance: Software‑selectable 50 Ω or 1 MΩ || 27 pF

  • Voltage ranges (full‑scale):

    • 50 Ω: 200 mV → 10 V

    • 1 MΩ: 200 mV → 20 V

  • Memory depth: 8 MB to 512 MB per channel (4–256 Mpts)

  • SFDR: >75 dBc (typical)NI

  • Rise time: ~3.5 ns

  • Filters: Software‑selectable 20 MHz (Bessel) and 40 MHz (anti‑alias)

  • Triggering: Edge, pulse, window, video, pattern; PXI trigger bus support

  • Time stamping: 100 ps resolution

  • Operating temperature: 0 °C to 55 °C

  • Connectors: Front‑panel SMA (2× analog in, 1× trigger in/out)

  • Weight: ~400 g

Interface & Communication

  • Bus: PXIe Gen1, plug‑and‑play with PXI/PXIe chassis

  • Driver: NI‑DAQmx, NI‑Scope

  • Software: NI‑MAX, LabVIEW, C/C++, Python, .NET

  • Synchronization: PXI trigger lines, PXIe star trigger, external clock in/out

  • Data transfer: DMA streaming to host; multi‑record acquisition (up to 100,000 records)

Core Features

  • 14‑bit high resolution: Lower noise than 12‑bit scopes, ideal for precision waveforms

  • 100 MHz bandwidth + 100 MS/s: Captures fast signals with accurate timing

  • Deep onboard memory: Up to 512 MB/channel for long captures without host streaming

  • Flexible input: 50 Ω/1 MΩ impedance, wide voltage ranges, selectable filters

  • Advanced triggering: Rich trigger modes for complex waveform capture

  • PXI synchronization: Align with other PXIe instruments (e.g., 446x DSA, 6570 switches)

Application Scenarios

  • Power electronics: Inverter, SMPS, and power supply waveform characterization

  • Audio & vibration: High‑resolution acoustic/structural signal capture

  • Automotive: ECU, sensor, and CAN/LIN bus signal validation

  • Aerospace: Avionics, radar, and high‑speed digital/analog testing

  • Research: Physics, ultrasound, and low‑noise signal measurements

Usage & Maintenance

Installation

Insert into 3U PXIe slot, secure latch. Connect signals to SMA inputs; use 50 Ω for high frequency, 1 MΩ for general purpose. NI‑DAQmx auto‑detects; configure via NI‑MAX.

Operation

Warm up 15 min before precision tests. Select impedance, voltage range, and filter based on signal. Use multi‑record mode for repetitive events (e.g., radar bursts). Avoid overloading inputs beyond max voltage.

Maintenance

Keep SMA connectors clean and dry; use torque wrench (0.9–1.1 N·m) to avoid damage. Inspect cables periodically. Calibrate every 2 years. Store in ESD‑safe bag when unused.


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