Dimming range describes the usable output span between low and full lighting levels.
Dimming range is the usable span between a low output condition and full output. It affects comfort and energy estimates but does not prove control compatibility.
Technical meaning
Dimming range describes how far a lighting group can reduce or raise output under its control method.
The practical range may be limited by the dimmer, driver, load, minimum stable output, flicker, colour shift or user comfort.
Calculation use
Energy estimates can note a partial-output condition when a zone is dimmed for part of the schedule.
Room notes should still check that the selected dimming level leaves enough illuminance on the assessed plane.
Not the same as
Dimming range is not the same as compatibility. A lamp or driver must still match the control method.
Dimming range is not a wiring instruction or commissioning note.
Australian context
Australian lighting notes should keep dimming range as a control assumption and leave electrical connection, compatibility and commissioning details to the proper project pathway.
Examples
Example
Value
Planning note
Task mode
100 percent output
Check the maintained task-plane result at the highest task condition.
Ambient mode
40 percent output
Energy may reduce, but low-output comfort and visibility still need attention.
Minimum stable level
not zero
Some dimmed loads cannot run cleanly at very low output.
Dimming-range notes support lighting and energy estimates. Compatibility, installation and commissioning need the relevant equipment data and licensed electrical pathway.