One terminal trio, two-terminal trio measuring device and electrical coefficient measurement method

摘要

PURPOSE: To obtain a one-terminal trio measuring device and a two -terminal measuring device which permit the high precision measurement in the state where a DUT is one-line-grounded and the outside conductor of a cable is grounded. ;CONSTITUTION: As for a one-terminal trio measuring device, the DUT of the third conductor side one-line grounding is connected between the first and third conductors of on one side (reverse edge side of a measuring device body) of a three-line coaxial cable 3, and one measurement terminal of an electric current measuring device 13 is connected with the third conductor, and the other measurement terminal is connected with the second conductor side terminal of a voltage signal source 11. While, in a two-terminal trio measuring device, the first conductors on the other edge sides of a pair of three-line coaxial cable are connected, and the second conductors are connected, and further the third conductors are connected, and the DUT is connected in the state where the third conductor side is one-line-grounded between the first and third conductors, and further, the gland terminal (guard terminal) of a DUT mounting circuit is connected with the second conductor. Further, an electric current measuring circuit is connected in series with a variable electric current source, and a voltage measuring device is connected in parallel with a voltage signal source.;COPYRIGHT: (C)1993,JPO&Japio