Topcon BM-7A - Page 85

Appendix
83
Chromaticity accuracy
Guaranteed accuracy range
Measurement
Angle
Luminance (cd/㎡)
2° 10 ～ 30,000
1° 40 ～ 120,000
0.2° 1,000 ～ 3,000,000
0.1° 4,000 ～ 12,000,000
* Operation in the AUTO range
* Chromaticity is displayed even at a luminance less than that given above.
Chromaticity 1
⊿x, ⊿y : ±0.002 or less
* When standard sources A is measured.
Chromaticity 2
⊿x, ⊿y : ±0.01 or less
For a combination of the standard sources A and next colored glass.
O-55, Y-48, A-73B, IRA-05,Ｔ-44 : Manufactured by Asahi Techno Glass Corp.
⊿x, ⊿y : ±0.03 or less
For a combination of the standard sources A and next colored glass.
R-61, B-46, V-44, G-54 : Manufactured by Asahi Techno Glass Corp.
Repeatability
Luminance
For 2°
1 to 5cd/㎡ ： 1％ or less （2σ, SLOW Mode, AUTO range, standard sources A）
5cd/㎡ or greater ： 0.5% or less （2σ, SLOW mode, AUTO range, standard sources A）
Measurement
Angle
Range and Specification
2°
1 to 5cd/㎡ ： 1% or less
５cd/㎡ or more ： 0.5% or less
1°
4 to 20cd/㎡ ： 1% or less
20cd/㎡ or more ： 0.5% or less
0.2°
100 to 500cd/㎡ ： 1% or less
500cd/㎡ or more ： 0.5% or less
0.1°
400 to 2000cd/㎡ ： 1% or less
2000cd/㎡ or more ： 0.5% or less