ARRI L5 - CCT Calculation Formulas

DMX protocol
47
Mode 15: HSI, Coarse / fine channel per function
Overview of typical CCT values as DMX values
To calculate CCT values in DMX % and vice versa
Use the following formulas to transform CCT values in DMX %
values and vice versa:
CCT values for the ARRI L5 models:
L5-TT (Tungsten Tuneable)
CCT
min
= 2.600 K
CCT
max
= 3.600 K
L5-DT (Daylight Tuneable)
CCT
min
= 5.000 K
CCT
max
= 6.500 K
L5-C
CCT
min
= 2.800 K
CCT
max
= 10.000 K
Channel Value Percent Function
1
0-255 0-100
Dimmer coarse
closed → open
2 0-255 0-100 Dimmer fine
3
0-255 0-100
Hue coarse
0 → 360°
4 0-255 0-100 Hue fine
5
0-255 0-100
Saturation coarse
0 → full saturated
6 0-255 0-100 Saturation fine
CCT-
Value
DMX-Value (8 bit) DMX-Value (16 bit)
L5-TT L5-DT L5-C L5-TT L5-DT L5-C
3.200 K 153 -- 14 39.321 -- 3.670
5.600 K -- 102 99 -- 26.214 25.493
6.000 K -- 170 113 -- 43.712 29.098
6.500 K -- 100% 131 -- 65.535 33.685
CCT
Target
CCT
max
CCT
min
–()DMX
in percent
×
100
-----------------------------------------------------------------------------------------
CCT
min
×=
DMX
in percent
CCT
recent
CCT
min
–
CCT
max
CCT
min
–
-------------------------------------------------
100×=