Measuring Leakage Current - Tektronix Keithley SourceMeter 2450 User Manual

Section 6: Leakage current and insulation resistance

Measuring leakage current

The following application demonstrates how to use the 2450 to measure the leakage current of a 1 nF
capacitor by sourcing a voltage and measuring the resulting current using the front panel or over the
remote interface. The remote interface examples show SCPI commands and TSP commands.
This application sets the 2450 to source 20 V and measure the resulting leakage current as a function
of time. The instrument takes current measurements for a specific period.
For this test, you will:
•
Reset the instrument
•
Set the instrument to read the rear terminals
•
Select the source voltage function and measure current function
•
Set the magnitude of the voltage source
•
Turn on autoranging
•
Set the measure delay
•
Use the Duration Loop trigger model template to make readings for a specified time period
•
Turn on the source output
•
Make readings for a specified period
•
Turn off the source output
6-4
Figure 30: Rear-panel connections insulation resistance test
Model 2450 SourceMeter® Instrument User's Manual
2450-900-01 Rev. E / August 2019