Browse Prior Art Database

Multi-Wire Tester

IP.com Disclosure Number: IPCOM000046888D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Wilson, JS: AUTHOR

Abstract

This article describes a tester for sequentially testing the wires of a multiple wire cable. Each wire is tested for open circuit, short circuit, and incorrect connection. The result of the test is visually displayed so that the actual fault and the conductor or conductors involved are easily identified. The tester is comprised of a master unit (Fig. 1) and a slave unit (Fig. 2). The master unit includes a single light source 20 (such as a light-emitting diode (LED)) and a plurality of switches. The switches enable one to select a single wire to be tested. The slave unit includes a plurality of LEDs. Each LED is associated with a particular wire.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 2

Multi-Wire Tester

This article describes a tester for sequentially testing the wires of a multiple wire cable. Each wire is tested for open circuit, short circuit, and incorrect connection. The result of the test is visually displayed so that the actual fault and the conductor or conductors involved are easily identified. The tester is comprised of a master unit (Fig. 1) and a slave unit (Fig. 2). The master unit includes a single light source 20 (such as a light-emitting diode (LED)) and a plurality of switches. The switches enable one to select a single wire to be tested. The slave unit includes a plurality of LEDs. Each LED is associated with a particular wire. When the switches on the master unit are set so that a particular wire is selected, and there is electrical continuity on that selected wire from the master unit to the slave unit, the single LED on the master unit and the associated LED on the slave unit is turned on. The visual manifestation indicates that the wire is properly connected. The master unit includes a data grade media (DGM) connector 10 which is connected through an N-wire shielded cable to a plurality of multi- position switches SW-1 through SW-4. The switches in turn are connected to a DGM terminal 12. A second set of wires 14 is connected to a voice grade media (VGM) connector 16. Each of the wires 14 is coupled to one of a plurality of switches SW-1 through SW-6. Each of the switches SW-1 through SW-6 is connected to VGM terminal 18. A two-position switch SW-7 couples DGM terminal 12 and VGM terminal 18 through LED 20 to an energy supply means, such as battery 22. The negative terminal of battery 22 is connected to the shield of the N-wire cable. As seen in Fig. 1, by positioning switch S-7 and one of the switches S-1 through S-6, one of six wires can be selected for tests. Fig. 2 shows the slave unit which is comprised of a plurality of light-emitting circuits LED-1 through LED-6....