The Power Supply Test sequences sources voltage from a power module and measures all test points on the PCB simultaneously with an analog input module.

This TestStand sequence uses the LabVIEW measurement libraries. By default, the test sequence is installed to the following location: C:\Users\Public\Documents\National Instruments\PCB Assembly Test Toolkit for LabVIEW\TestStand\Automation\Power Supply Tests

Required Driver Application Software

This sequence requires a supported version of NI-DAQmx.

Highlighted Features

  • Power Supply Test (with Trigger)—Sources the supply voltage using a power module and simultaneously measures the test points with an analog input module. Hardware triggers reduce the delay between source and measurement. This example uses the following libraries:
    • DAQ_Power Supply Source and Measure
    • DAQ_Time Domain Measurement
  • Power Supply Test (without Trigger)—Sources the supply voltage using a power module and simultaneously measures the test points with an analog input module, without using triggers. This example uses the following libraries:
    • DAQ_Power Supply Source and Measure
    • DAQ_DC-RMS Voltage Measurement
  • Power down all Power Supplies—Powers down all power supplies by disabling the output. This example uses the DAQ_DC Voltage Generation library.

    • Hardware Configuration

    The following figure illustrates the hardware connections for this example sequence.


    Refer to the documentation for your specific device for pinouts and other information necessary to adapt this example sequence to your application.

    Using the Sequence with Physical Hardware

    1. Run the sequence once in simulation mode. Running the sequence in simulation mode creates the required global virtual channels in NI MAX that you must modify.
      Note In this example, physical and global virtual channels are used to configure the terminal or pin to perform the instrument actions. Global virtual channels are software entities that encapsulate the physical channel along with other channel specific information such as range, terminal configuration, and custom scaling. You can create global channels in NI MAX and call them from measurement libraries.
    2. Right click the Import Hardware Config step and select Run Mode » Skip to skip the step.
    3. Configure the remaining sequences. Open each sequence and examine the Note to run with Hardware entry.
    4. Configure the Power Supply and Measure (with Trigger) Sequence sequence.
      1. Update the Physical Channels input to use your power module channel in the Power Supply Source and Measure initialize step.
      2. Open NI-MAX and update the physical channel linked to the global virtual channels used in the Time Domain Measurement initialize steps: TP_Power0, TP_Power1 and TP_Power2. Refer to Creating and Modifying Global Virtual Channels for more information.
      3. Open the Time Domain Measurement – Configure TP step and update the Digital Trigger Source.
      4. Update the Timing Engine to use your trigger line in the Power Supply Configure and Measure step.
      5. Set the Periodic waveform input to True to perform time domain analysis in the measured data in the Time Domain Measurement - Fetch TP step.
      6. Review the power and analog input pin configurations for your use case.
      7. Save the sequence.
    5. Configure the Power Supply and Measure (without Trigger) sequence.
      1. Update the Physical Channels input to use your power module channel in the Power Supply Source and Measure initialize step.
      2. Open NI-MAX and update the physical channel linked to the global virtual channels used in the Time Domain Measurement initialize steps: TP_Power0, TP_Power1 and TP_Power2. Refer to Creating and Modifying Global Virtual Channels for more information.
      3. Review the power and analog input pin configurations for your use case.
      4. Save the sequence.
    6. Configure the Power down all Power Supplies sequence.
      1. Open the Power Supply Source and Measure - Initialize step and update the Physical Channels input to use your power module channel.
      2. Review the power configurations for your use case.
      3. Save the sequence.