Model Explanation

PXI: Standard 3U PXI hybrid bus module, single slot, compatible with PXI/PXIe chassis.

5122: NI 5100 series number, representing 2 channels, 100 MHz bandwidth, 100 MS/s, 14-bit, high-resolution PXI oscilloscope.

Component Number (by memory):

778756‑01: 8 MB / channel

778756‑02: 32 MB / channel

778756‑03: 256 MB / channel

778756‑04: 512 MB / channel

Technical Parameters (25℃, preheating 15 min):

Channels: 2 analog inputs, full channel synchronous sampling

Resolution: 14 bits

Sampling Rate: Real-time 100 MS/s; Random interleaved equivalent up to 2 GS/s

Analog Bandwidth: 100 MHz (‑3 dB)

Input Voltage Range: ±100 mV to ±10 V (multiple selectable levels)

Input Impedance: 50 Ω / 1 MΩ (software selectable)

Coupling Mode: AC / DC (per channel independent)

Onboard Memory: 8 MB / 32 MB / 256 MB / 512 MB (per channel)

Spurious Free Dynamic Range SFDR: Typical 75 dBc

Signal-to-Noise Ratio SNR: Typical 62 dB

Triggering Method: Edge, Window, Hysteresis, Video, Digital Trigger; 100 ps timestamp; Pre-trigger / Post-trigger

Clock: Internal 100 MHz; External 4–100 MHz sampling clock; Lockable PXI 10 MHz reference

Power Consumption: Approximately 18 W

Size / Weight: 3U single slot, approximately 480 g

Environment: Operating 0–55℃; Storage -40–70℃; Humidity 10%–90% RH (no condensation)

Interfaces and Communication Configuration

Front-end Interface

2×BNC: CH0–CH1 analog input

1×BNC (TRIG): External analog trigger input

1×SMB (CLK IN): External sampling clock / reference input

1×SMB (CLK OUT): Internal clock / reference output

1×9-pin mini DIN (AUX I/O): Digital trigger I/O, PFI0/PFI1

Panel Indicator Lights

PWR (green): Power normal

RUN (green): Active when collecting, flashes when waiting for trigger

ERR (red): Over-temperature, over-current or configuration error

Bus and Synchronization

PXI hybrid bus, supports PXI trigger bus, Star trigger, RTSI synchronization

Multi-module synchronization phase error < 1 μs, scalable multi-channel synchronous acquisition

Software Driver

NI‑SCOPE driver, supports LabVIEW, TestStand, Python, C#

NI MAX: Device identification, self-check, configuration, calibration

Companion: Soft front panel SFP, built-in measurement functions, signal processing library NI Core function

14-bit high-resolution acquisition: 256 times the quantization accuracy of 8 bits, low-noise design, suitable for small signals and high-precision measurements

100 MHz bandwidth and 100 MS/s real-time sampling: covers mid-high frequency signals, balancing speed and bandwidth

Ultra-large deep storage: up to 512 MB per channel, supports long-term waveform recording and multi-segment acquisition

Flexible input configuration: AC/DC coupling for each channel, 50 Ω/1 MΩ impedance, multiple voltage range options available

Precise triggering and timestamp: multiple triggering modes, 100 ps timestamp, accurately capturing transient events

Wide dynamic range: 75 dBc SFDR, 62 dB SNR, effectively suppressing harmonics and noise

Multi-module synchronous expansion: PXI/RTSI/Star trigger synchronization, building a phase-coherent acquisition system Applicable scenarios

Audio and Acoustics Testing: High-fidelity waveform and distortion analysis of microphones, speakers, and audio equipment

Vibration and Modal Analysis: High-precision acquisition of structural vibration, impact signals, and modal parameters

Communication and RF: Time-domain / frequency-domain analysis of baseband signals, modulation signals, and low-noise RF signals

Automotive Electronics: High-precision testing of sensor signals, ECU waveforms, and vehicle network signals

Research and Medical: Low-noise high-resolution acquisition of bioelectrical signals, ultrasound imaging, mass spectrometry analysis, etc.

Industrial Precision Measurement: Transient and steady-state analysis of power supply ripple, sensor signals, and precise circuits

User and Maintenance Instructions

Installation and Power On

Power off installation, insert single slot and fix; chassis reliable grounding for anti-static

Power on preheating for 15 minutes, NI MAX self-check to confirm no hardware errors

Keep the chassis ventilated during operation, ambient temperature ≤ 55℃, avoid blocking fans

Wiring and Operation

Use 50 Ω coaxial cable for high-frequency signals, tighten BNC connector to reduce signal reflection

Select 50 Ω impedance for high-frequency / RF signals, 1 MΩ for low-frequency / high-voltage signals

Use AC coupling for AC small signals, DC / slow-changing signals for DC coupling

优先选择 channel internal signals as trigger sources， set appropriate trigger level to avoid false triggering

Use PXI trigger bus or Star trigger for multi-module synchronization to ensure phase consistency

Maintenance and Calibration

It is recommended to perform NIST traceable calibration once every 2 years； use internal self-calibration to compensate for temperature drift on a daily basis

Regularly clean dust from BNC/SMB/DIN interfaces， keep dry； add dust caps for long-term inactivity

The working environment should be free of condensation， with humidity ranging from 10% to 90% RH， and away from strong electromagnetic interference

Do not input >±15 V voltage； do not plug in or unplug cables while powered on； avoid severe vibrations