OSRAM POWERTRONIC PT-FIT I ECG for HID lamps, with cable clamp - Manual (Page 25)

THE PRODUCT IN OPERATION
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Where no control line exists in the system the user can use
the AstroDIM function. Using it one can dim the luminaire
without an external control by defi ning a time window (e.g.
within six hours) within which the lamp is dimmed from
100 to 60 % and is then turned back up again.
All three dimming settings can be adjusted using a soft-
ware tool and can be changed back again at any time. For
this purpose OSRAM provides the DALI magic interface
standard and the 3DIM Tool software package as a download.
More detailed information on the 3DIM topic can be found
in www.osram.com/3dim.
The user can choose here between three different dimming
modes:
DALI ® is a communication standard that is widely used by
luminaire manufacturers. DALI ® works bidirectionally as
part of a tele-management system, and offers the user a
number of control and settings options for each light source.
StepDIM is the possibility to regulate a luminaire in a single
step via a control cable to a particular dimming factor
(e.g. from 100 to 60 %).
Figure 25: DALI ® – Digital Addressable Lighting Interface
Figure 26: StepDIM
Figure 27: AstroDIM
Time
Lumen
Time
Lumen
Time
Lumen