EULUMDAT File Format Specification

Proposal for a Data Format for Exchange of Luminaire Data (Interior, Exterior, and/or Road Lighting Luminaires) Under the Operating Systems MS-DOS 2.x/3.xx Under Condition of Unequivocal Coordination Between Luminaire and Data Set

Item
Designation
Number of Characters
1

Company identification/data bank/version/format identification max.

Max. 78
2

Type indicator Ityp (1 - point source with symmetry about the vertical axis; 2 - linear luminaire; 3 - point source with any other symmetry) [See Note 1]

1
3 Symmetry indicator Isym (0 - no symmetry; 1 - symmetry about the vertical axis; 2- symmetry to plane C0-C180; 3- symmetry to plane C90-C270; 4- symmetry to plane C0-C180 and to plane C90-C270)
1
4 Number Mc of C-planes between 0 and 360 degrees (usually 24 for interior, 36 for road lighting luminaires)
2
5 Distance Dc between C-planes (Dc = 0 for non-equidistantly available C-planes)
5
6 Number Ng of luminous intensities in each C-plane (usually 19 or 37)
2
7 Distance Dg between luminous intensities per C-plane (Dg = 0 for non-equidistantly available luminous intensities in C-planes)
5
8 Measurement report number
Max. 78
9 Luminaire name
Max. 78
10 Luminaire number
Max. 78
11 File name
8
12 Date/user
Max. 78
13 Length/diameter of luminaire (mm)
4
14 Width of luminaire b (mm) (b = 0 for circular luminaire)
4
15 Height of luminaire (mm)
4
16 Length/diameter of luminous area (mm)
4
17 Width of luminous area b1 (mm) (b1 = 0 for circular luminous area of luminaire)
4
18 Height of luminous area C0-plane (mm)
4
19 Height of luminous area C90-plane (mm)
4
20 Height of luminous area C180-plane (mm)
4
21 Height of luminous area C270-plane (mm)
4
22 Downward flux fraction DFF (%)
4
23 Light output ratio luminaire LORL (%)
4
24 Conversion factor for luminous intensities (depending on measurement)
6
25 Tilt of luminaire during measurement (road lighting luminaires)
6
26 Number n of standard sets of lamps (optional, also extendable on company-specific basis)
4
26a Number of lamps
n * 4
26b Type of lamps
n * 24
26c Total luminous flux of lamps (lumens)
n * 12
26d Color appearance / color temperature of lamps
n * 16
26e Color rendering group / color rendering index
n * 6
26f Wattage including ballast (watts)
n * 8
27 Direct ratios DR for room indices k = 0.6 ... 5 (for determination of luminaire numbers according to utilization factor method)
10 * 7
28 Angles C (beginning with 0 degrees)
Mc * 6
29 Angles G (beginning with 0 degrees)
Ng * 6
30 Luminous intensity distribution (candela / 1000 lumens) [See Note 2]
(Mc2-Mc1+1) * Ng * 6

NOTES

1. Only linear luminaires (Ityp = 2) are being subdivided in longnitudinal and transverse directions.

2. The parameters Mc1 and Mc2 for the luminous intensity distribution are determined by:

Isym
Mc1
Mc2
0
1 Mc
1
1 1
2
1 Mc / 2 + 1
3
3 * Mc / 4 + 1 Mc1 + Mc / 2
4
1 Mc / 4 + 1

3. Each field is an ASCII string that is terminated with an MS-DOS <CR><LF> pair.


Na podstawie opisu zamieszczonego przez Ian'a Ashdown'a na: http://www.helios32.com/Eulumdat.htm