OSRAM QUICKTRONIC INTELLIGENT DIM CFL - Manual (Page 29)

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2.9.1 The 1…10 V dimming curve
The 1…10 V interface is defined in IEC 60929. In the control voltage
range of 3 V
to 10 V there is a largely linear relationship to the rela-
tive luminous flux. In the 1…10 V interface, a logarithmic response
(like the DALI units) is adjusted by a logarithmic potentiometer.
luminous flux
in %
Control voltage in V
Figure 14: The 1…10 V characteristic: Luminous flux against control
voltage
The control current in the 1…10 V interface drops with increasing
control voltage. Unlike the DALI interface, this does not therefore re-
main constant.
Control current
Control voltage [V]
Figure 15: Decreasing control current with increasing control voltage