• Relay Control Board and CPU Functional Tester

Relay Control Board and CPU Functional Tester

Automated CPU board tester with precision voltage calibration, QR code traceability, and functional verification for seven PCBA variants.

Project Scope

  • Automated testing of 7 Nos PCBAs.
  • Development of an ATE rack with an ODU interface changeover fixture.

Challenge

  • Cognex area scanners automatically read QR codes.
  • Voltage Calibration of CPU boards with 0.009% accuracy.

Solution

  • Automated test software in the LabVIEW and TestStand platform.
  • Relay control and feedback through Schneider M340 PLC.
  • Calibration of CPU boards using NI CRIO and Analog output module with 0.009% accuracy.
  • Keysight 8.5 Digit  DMM to measure voltage signals with high accuracy for calibration.
  • ODU interface for fixture changeovers.
  • QR codes are automatically detected by Cognex area scanners.
  • DC power supply for digital input testing.
  • Keysight DAQ to measure test point voltages.
  • Keysight Function generator for Clock Pulse generation.
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