Nema cabinet monitor tester

Details Nema cabinet monitor tester Nema cabinet monitor tester

1996-07-29

1998-03-31

Williams, Hezron E.

Measuring and testing

Simulated environment

073 101, 0738659, 340931, G01N 1900

Patent

active

057341168

ABSTRACT:
An apparatus and method for testing a conflict monitor of the present invention includes a housing having a plurality of switches which can be manually manipulated in order to simulate the output of a controller. The conflict monitor is tested by disconnecting the traffic signal controller from the wiring harnesses and connecting the same harnesses to the test unit. The technician can then manipulate the switches in order to control the traffic signals and simulate the operation of the controller. When conflicting traffic signals are activated, the conflict monitor should punch out and put the traffic signals in a flashing state. The test unit includes a reset switch which is connected to the remote reset of the conflict monitor. After the conflict monitor punches out, the technician can simply press the reset button on the test unit without having to manually reset the conflict monitor.

REFERENCES:
patent: 3902156 (1975-08-01), Hill
patent: 4586041 (1986-04-01), Carlson
patent: 4835534 (1989-05-01), Lucas
patent: 5220321 (1993-06-01), Sauer
patent: 5327123 (1994-07-01), Heimann et al.
Procedures for manual monitor testers, Crouse-hinds, Syracuse, New York, Dec.1979.

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