Acquiring Measurements

NI DC Power Supplies and SMUs Help (NI-DCPower)

Edition Date: January 2018

Part Number: 370736U-01

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Once you configure the device and it is in the Running state, the measure unit can take measurements.

Use the niDCPower Measure When property or the NIDCPOWER_ATTR_MEASURE_WHEN attribute to configure how NI-DCPower takes measurements.

The following table lists the settings for the niDCPower Measure When property or the NIDCPOWER_ATTR_MEASURE_WHEN attribute.

Measure When Details
On Demand You can acquire measurements on demand using the niDCPower Measure VI and the niDCPower_Measure function (to measure either the voltage or the current on a single channel) or the niDCPower Measure Multiple VI and the niDCPower_MeasureMultiple function (to measure both the voltage and the current on multiple channels). When you call these VIs and functions, the measure unit takes a measurement and returns it.
Automatically after Source Complete The measure unit acquires a measurement after every source operation and stores it in a buffer on the device. You can use the niDCPower Fetch Multiple VI and the niDCPower_FetchMultiple function to retrieve measurements from the buffer.
On Measure Trigger The measure unit acquires a measurement when it receives a Measure trigger and stores it in a buffer on the device. You can use the niDCPower Fetch Multiple VI and the niDCPower_FetchMultiple function to retrieve measurements from the buffer. For more information see the Configuring Triggers and Events.

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