Lutron Electronics Company, Inc.

Frank H Benetz

John H Bull

Evan Robert Ackmann

William Harlan Howe

Thomas Richard Hinds

A control device, such as a digital ballast controller, is adapted to be coupled to an electronic ballast, such as a DALI ballast, via a communication link, and is operable to determine whether the ballast is operating within the specifications of a predefined protocol standard, e.g., the DALI standard. For example, the control device may measure the bit times of a digital message received from the ballast and to determine if the bit times fall within the limits set by the standard. The control device may also determine the minimum delay time required between two digital messages received by the ballast and determine if the minimum delay time falls within the limit set by the standard. The control device may adapt its normal operation (e.g., how digital messages are received and transmitted) or may provide feedback (e.g., by flashing a lamp) in response to determining that the ballast is operating outside of the specifications of the standard.

Method of confirming that a control device complies with a predefined protocol standard

The present invention relates to a semi-automatic method of replacing a ballast within a lighting control system, such that the new replacement ballast can operate in the same manner as the ballast that was replaced. If multiple ballasts in a lighting control system are removed from the system and multiple new ballasts are installed to replace those ballasts, any operational configurations such as group configurations or area information associated with each removed (missing) ballast must be assigned to the proper new replacement ballast. The semi-automatic replacement method relies upon the operational configurations of the removed ballast to help a user identify which new ballast should replace each missing ballast.

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Slatedale, PA, United States of America

Frank H Benetz