ANSI-NEMA FL-1: Difference between revisions
some rewording
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===Runtime=== | ===Runtime=== | ||
The amount of continuous runtime (in minutes) | The amount of continuous runtime (in minutes) until the light output drops to 10% of its original value (measured 30 seconds after turning the light on). This test is done in an integrating sphere just like the lumen test with light output measured every 15 minutes. 10% of brightness probably gives inflated runtime numbers. In the past, some testers used 50% to be a little more practical, but with most batteries, the drop-off is usually pretty quick and the time between 50% and 10% usually is not long. | ||
===Peak Beam Intensity=== | ===Peak Beam Intensity=== | ||
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[http://www.nema.org/stds/fl1.cfm NEMA store] | [http://www.nema.org/stds/fl1.cfm NEMA store] | ||
[http://www.nema.org/stds/complimentary-docs/upload/FL%201%202009%20final.pdf FL-1 Table of Contents and committee members] | [http://www.nema.org/stds/complimentary-docs/upload/FL%201%202009%20final.pdf FL-1 Table of Contents and committee members] | ||