Diode Measurement Guide

This section discusses setting up the DMM to measure a DC voltage drop across two points of the device under test.

Connection diagram

Setup for Diode Measurement

Software panel

1.       Select “Diode” from the function list.

2.       Select a range that is sufficient to fully forward bias the diode. 

3.       Trigger the measurement using the Trig button or change the trigger mode to Continuous.

Additional comments

When the Gx2065 is in Diode mode, it functions as a current source and measures the voltage drop across the diode.  If the current sources is insufficient, the diode will be partially biased and the reported voltage will be some fraction of the fully biased voltage.

Example Code

GxDmmSetFunction(nHandle, GXDMM_FUNCTION_DIODE, &nStatus);

GxDmmMeasure(nHandle, &dMeasurement, &nStatus);