Patent ID: 9709602
Date: 2017-07-18
CPC Classifications: G01R,H01R

Claim:
1. A method of switching power to a field device under testing conditions using a two-prong plug with first and second prongs, a shunt plug, and a two-wire communication line having a first terminal pair of wires at a first end connectable to the field device and removable therefrom and a second terminal pair of wires at a second end that terminates at the two-prong plug and a first wire of the second pair is connected to one of the first and second prong and a second wire connected to the other of the first and second prong of the two-prong plug, the method comprising: connecting the two-wire communication line between a handheld maintenance tool and the field device to electrically couple the two-wire communication line with the handheld maintenance tool; and inserting the shunt plug having a first prong and a second prong into the handheld maintenance tool and into the two-prong plug, such that the second prong of the shunt plug is inserted into a power jack of the handheld maintenance tool so that the shunt plug connects the second prong of the two-prong plug and the second prong of the shunt plug to apply a voltage of the handheld maintenance tool across the two-wire communication line to power the field device.