Connect one end of the device under test to the HI input terminal of the electrometer. Connect the other end of the device to the HI output terminal of the voltage source. The LO input terminal of the electrometer is connected to the LO output terminal of the voltage source. The device under test should be placed in a metal enclosure to prevent electrostatic interference from degrading the measurements. The metal enclosure should be connected to the LO input terminal of the electrometer.