LM-79 testing captures performance characteristics of products that feature solid-state lighting (SSL) technology, including light-emitting diodes (LEDs). This testing provides a snapshot of performance under specified operating conditions at some point in the life of a product, usually at the beginning of operation— these are referred to as initial measurements. It does not address lifetime ratings, changing performance over time (e.g., lumen maintenance), or LED case temperature. The LM-79 method is applicable to integrated LED products, such as luminaires and replacement lamps. It is not applicable to LED packages, modules, or arrays (herein collectively referred to as LED light sources).
LM-79 data enables objective product comparisons, allows for evaluation relative to performance requirements. Although LM-79 does not prescribe a report format or the minimum content, a substantial list of “typical items reported” is provided. Key types of measurements addressed in the test report include electrical characteristics, lumen output, spatial distribution of light, and color attributes.
At Unilamp, we have an in-house testing facility that can test and issue full report of IES LM-79-08 for our customers. The test method is carried out according to IES manuals and procedures. Please contact our sales representatives for more detail.