II. Model Interpretation

PXI: PCI eXtensions for Instrumentation, compatible with PXI/PXIe hybrid slots.

2512: 2500 series (fault insertion / signal switch), 12 represents 7 channels, high-power FET, 50 V/10 A, wide bandwidth.

Part Number: 778572-12 (standard model).

Status: In stock (NI's mainstream high-power HIL test dedicated module).

III. Technical Parameters

Channel Configuration:

Feedthrough Channels: 7 channels (each channel can be independently open-circuited / short-circuited)

Fault Bus: 2 channels (configurable as ground, battery, power supply, etc.)

Topology: Each channel supports "open" "short-circuit to bus 1/2" "direct connection" four states

Electrical Characteristics:

Maximum switching voltage: 50 VDC

Maximum continuous current: 10 A (per channel)

Maximum pulse current: 50 A (600 μs)

Conduction Resistance: <16 mΩ (typical)

Relay Type: Solid-state FET (no mechanical contacts)

Protection Mechanism: Overcurrent, overtemperature detection

Dynamic Performance:

Bandwidth: 800 kHz

Switching Time: 8 μs (typical) / 35 μs (maximum)

Scan Rate: Up to 100 channels per second

Relay Lifespan: Infinite (solid-state without contact wear)

Physical and Environmental:

Size: 3U PXI (100 mm × 160 mm)

Weight: Approximately 0.32 kg

Operating Temperature: 0–55 °C; Storage: −40–70 °C

Humidity: 10%–90% RH (no condensation)

IV. Interface and Communication Configuration

Host Interface: PXI hybrid bus (compatible with PXIe/PXI slots), supports hot plugging, plug-and-play.

Signal Interface: 78-pin female connector (front panel), equipped with dedicated terminal blocks / cables for connecting DUT to fault bus.

Trigger and Synchronization:

PXI Trigger Line: 70 ns resolution, supports multi-module synchronization

Hardware Trigger: Front panel trigger input / output, compatible with HIL real-time timing

Driver Software: Compatible with NI-SWITCH, LabVIEW Real-Time, NI VeriStand, TestStand, C/C++/Python API.

V. Core Functions

High-power Fault Simulation: 50 VDC/10 A continuous / 50 A pulse capability, suitable for large-power signal fault injection in automotive 12/24 V, industrial control, etc.

Solid-state Relay High Reliability: FET without contacts design, infinite lifespan, high-speed switching (8 μs), low contact resistance, suitable for long-term automated testing.

Multi-type Fault Programmable: 7-channel independent control, simulating open circuit, ground short circuit, power supply short circuit, pin-to-pin short circuit, covering mainstream electrical fault scenarios.

Dual Fault Bus Flexible Configuration: 2 programmable fault buses, can be mapped to ground, battery positive/negative, reference voltage, achieving complex fault combinations.

HIL Real-time Integration: Combined with LabVIEW Real-Time/VeriStand, supports microsecond-level timing control, suitable for ECU/FADEC real-time system testing.

VI. Application Scenarios

Automotive Electronic HIL Testing: Engine ECU, body controller, BMS, ADAS system's large-power fault injection and robustness verification.

Aerospace Testing: FADEC, flight control system, avionics equipment's short-circuit / open-circuit fault simulation and reliability testing. Industrial Control and Embedded Systems: Verification of Fault-Tolerant Capabilities for High-Power Electrical Failures in PLCs, Motion Controllers, and Industrial Gateways.

Power and Load Testing: Verification of Overvoltage / Short Circuit / Open Circuit Fault Protection Mechanisms for Power Modules and Battery Management Systems.

High Reliability Equipment Verification: Electrical Fault Tolerance Testing for Medical Equipment and Train Control Units.

VII. Installation and Maintenance Instructions

Installation and Wiring:

Modules: Unplug and plug in during power failure, insert into PXI/PXIe mixed slots, tighten the fixing screws.

Wiring: Connect the 78-pin interface to the DUT (test equipment) and the fault bus according to channel definitions, avoiding overvoltage / overcurrent wiring.

Grounding: Secure the chassis to the system ground, independently ground the fault bus to reduce interference.

Software Configuration:

Install NI-SWITCH and VeriStand drivers, identify the NI-MAX module, configure the fault bus mapping.

Programming: Call the switch VI in LabVIEW Real-Time, or configure the real-time fault sequence through VeriStand.

Daily Maintenance:

Cleaning: Wipe the panel with a soft cloth after power off, avoid liquid entering the 78-pin interface.

Environment: Operating temperature 0–55 °C, avoid dust, moisture, and strong electromagnetic interference.

Protection Mechanism: Avoid overvoltage (>50 V), overcurrent (>10 A continuously), utilize built-in overcurrent / overtemperature protection.

Static Protection: Wear an anti-static wristband when plugging and unplugging the module, ensure good grounding of the chassis.