Control Card PCBA Integrated Functional Test Fixture

Project Overview

Multi-technology PCBA functional test case combining bed-of-nails fixture, boundary scan, programming, electrical measurement, communication test and signal simulation.

Testing Requirements

• Access the PCB through a bed-of-nails fixture.
• Use programmable power supply and NI multifunction DAQ for voltage, current, frequency and resistance measurement.
• Perform boundary scan test for DSP and FPGA.
• Support CPLD and Flash programming, and perform full functional test through RS232 / Ethernet.

System Architecture

Key Test Items

Engineering Challenges

• Control card PCBA coverage needs bed-of-nails access, boundary scan, programming and functional communication together.
• DSP, FPGA, CPLD, Flash and board-level interfaces need to be organized into one test flow.
• Some signals need project-specific simulation through an onTAP-designed simulator.

Implementation

• NI LabVIEW test software manages power, DAQ, JTAG, programming, communication and simulation resources.
• The bed-of-nails fixture provides stable PCB contact and signal access.
• Boundary scan and signal simulation expand test coverage without using absolute claims such as 100% coverage.

Engineering Outcome

• An integrated PCBA functional test fixture and test software platform was built.
• The multi-technology approach improves testability for control card PCBA.
• The case demonstrates onTAP's integration capability across fixture, hardware, software, boundary scan and signal simulation.

Related Solutions

Related Engineering Capabilities