Hewlett-packard Company

Kenneth E Hall

David Johannes Pommerenke

Lowell Edward Kolb

Debra L Ledsinger

A site reference source acts as a programmable frequency source. The site reference source includes a symmetrical radiating unit. The symmetrical radiating unit includes a cylindrical shaped structure, a signal generator, a power source and an antenna. The signal generator is housed within the cylindrical shaped structure. The power source is also housed within the cylindrical shaped structure. The power source provides power to the signal generator. The antenna is external to the cylindrical shaped structure. The antenna is electrically connected to the signal generator housed within the cylindrical shaped structure. In order to radiate signals, the signal generator generates signals and transmits the signals through the cylindrical shaped structure to the antenna.

Traceable self-contained programmable frequency source for performing

Equipment under test is adjusted during set-up for electromagnetic compatibility testing. The equipment under test is placed on a base, such as a table, other structure or the ground. Positioners are connected to cables and/or subparts of the equipment under test. For example, the positioners are non-metallic pneumatic cylinders. The positioners are anchored to the base, to the device under test, or to some other structure. For various positions of an antenna relative to the equipment under test, positions of the positioners are found for which there is a maximum signal response. This is done by measuring signal response for current positions of the positioners. The current positions of the positioners are then varied using a remote control unit which controls positions of the positioners. This is repeated for as many different positions as desired. The positions which resulted in the maximum signal response is utilized for the electromagnetic compatibility testing.

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Weimar, CA, United States of America

Kenneth E Hall