A description of elements of a luminaire is listed in following table.

Pos.

Description

designated number of digits

1

Manufacturer name / database / version / format identification

max. 78

2

Type indicator Itype

Ityp= 1 ... point rotation-symmertically luminaire

......= 2 ... line scource luminaire

  = 3 ... non point rotation-symmertically luminaire

  (only luminaires with characterisation Ityp = 2 are divisible in longitudinal and cross direction

1

 

3

Symmetry indicator Isym

Isym = 0 ... no symmetry

  = 1 ... symmetry

  = 2 ... symmetry plane C0-C180

  = 3 ... symmetry plane C90-C270

  = 4 ... symmetry plane C0-C180 and

  plane C90-C270 

1

 

4

Number Mc of C-planes for 0 ... 360°

(usual 24 for  interior luminaires,

36 for street luminaires)

2

5

Distance Dc between C-planes

(Dc = 0 für nicht gleichabständig

vorliegende C-Ebenen)

5

6

Anzahl Ng der Lichtstärken in jeder C-Ebene

(üblich 19, 37 oder 73)

2

7

Abstand Dg zwischen den Lichtstärken

je C-Ebene

(Dg = 0 for non equidistant luminious intesities in C-planes

5

8

Number of test certificate

max. 78

9

Luminaire name

max. 78

10

Luminaire number

max. 78

11

File name

8

12

Date/person responsible

max. 78

13

Length/diameter of the luminaire

(mm)  4

14

Width b of the luminaire

(b – 0 for circular luminaires)

(mm)  4

15

Height of the luminaire

(mm)  4

16

Length/diameter of the luminous area

(mm)  4

17

Width b1 of the luminous area

(b1 = 0 for a circular luminous area of the luminaire)

(mm)  4

18

Height of the luminous area C0

(mm)  4

19

Height of the luminous area C90

(mm)  4

20

Height of the luminous area C180

(mm)  4

21

Height of the luminous area C270

(mm)  4

22

Ratio of the downward flux phi

(%)  4

23

Light output ration of the luminaire EtaLB

(%)  4

24

Conversation factor for luminous intensity

6

25

Tilt of the luminaire during measurement (important for street luminaires)

6

26

Number of  equipment (optional)

n  4

26 a

Number of lamps

n  *  4

26b

Type of the lamp

n  *24

26c

Total luminous flux of lamps

(lm)  n  *12

26d

Colour temperature of the lamp

  n  *16

26e

Colour rendering index

n  *  6

26f

Total system power

(W)  n  *  8

27

Ratio of total luminous flux

half-space for k = 0.6 ... 5

(for determination of number of lamps to light output ratio 

procedure LITG 5th edition 1988)

10  *  7

28

Angle C  (starting with 0°)

Mc  *  6

29

Angle G  (starting with 0°)

Ng  *  6

30

Distribution of luminous intensity (cd/klm)  (Mc2-Mc1+1)

for Isym = 0 is Mc1 = 1 and Mc2 = Mc

for Isym = 1 is Mc1 = 1 and Mc2 = 1

for Isym = 2 is Mc1 = 1 and Mc2 =Mc/2+1

for Isym = 3 is Mc1 = 3*Mc/4+1 and Mc2 =Mc1+Mc/2

for Isym = 4 is Mc1 = 1 and Mc2 = Mc/4+1

*  Ng  *  6


The designated number of digits is only an estimation of possible memory requirements of the bulk storage. Every data item is encoded as ASCII string and an EOL character.