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Automating DWDM Filter Testing Using LabVIEW


Reduce manual operator involvement in DWDM filter test to increase throughput and remove human error.


Create automated test system that positions filter under test, aligns collimated laser source to filter, measures transmission power, and displays and saves data to file.

Key products used:

  • National Instruments (NI) LabVIEW
  • NI PXI-1002 chassis
  • NI PXI-8176 controller


The automated test system reduced operator involvement to loading a tray of filters and initiating the automatic test sequence. The system tests 150 filters per hour – a net throughput increase of 5X per station and 10X per operator over the previous manual system – improves accuracy, and eliminates human error.