ETC Source Four Revolution - Manual (Page 47)

Photometric Data
Minimum Spread
Median Spread
Maximum Spread
37.2ft 44.7ft 52.1ft 59.6ft
11.3m 13.6m 15.9m 18.2m
10ft 12ft 14ft 16ft
3.0m 3.7m 4.3m 4.9m
FC 272 188 139 106
LUX 2930 2025 1495 1140
15˚ 376,520 10,830 7,060 47.19% 14.4
10.5˚ 15.3˚
0º 2˚ 4˚ 6˚ 8˚
0
100K
200K
300K
400K
10˚ 2˚ 4˚ 6˚ 8˚ 10˚
3%
10%
50%
X
Y
Throw Distance (d)
1/10 Peak Diameter
1/10 Peak 1/2 Peak
Degree Candlepower
1/10 Peak
Lumens
1/10 Peak
Efficiency
1/2 Peak
Lumens LPW
Throw Distance Multiplier* Degrees
Candela
Be
am
An
gl
e
Fiel
d A
ngl
e
22.3ft 26.7ft 31.2ft 35.6ft
6.8m 8.1m 9.5m 10.9m
10ft 12ft 14ft 16ft
3.0m 3.7m 4.3m 4.9m
FC 309 216 158 121
LUX 3325 2325 1700 1300
17.2˚ 25.3˚
0˚ 3˚ 6˚ 9˚ 12˚
0
50K
100K
150K
200K
15˚ 3˚ 6˚ 9˚ 12˚ 15˚
25˚ 153,730 11,760 7,425 51.24% 15.7
3%
10%
50%
X
Y
Throw Distance (d)
1/10 Peak Diameter
1/10 Peak 1/2 Peak
Degree Candlepower
1/10 Peak
Lumens
1/10 Peak
Efficiency
1/2 Peak
Lumens LPW
Throw Distance Multiplier* Degrees
Candel
a
B eam
An
gle
Fi
el
d A
ng
le
16.2ft 19.4ft 22.7ft 25.9ft
4.9m 5.9m 6.9m 7.9m
10ft 12ft 14ft 16ft
3.0m 3.7m 4.3m 4.9m
FC 299 208 152 117
LUX 3220 2240 1640 1260
23.7˚ 34.3˚
0˚ 4˚ 8˚ 12˚ 16˚
0
25K
50K
75K
100K
20˚ 4˚ 8˚ 12˚ 16˚ 20˚
35˚ 78,410 10,950 6,925 47.71% 14.6
3%
10%
50%
X
Y
Throw Distance (d)
1/10 Peak Diameter
1/10 Peak 1/2 Peak
Degree Candlepower
1/10 Peak
Lumens
1/10 Peak
Efficiency
1/2 Peak
Lumens LPW
Throw Distance Multiplier* Degrees
Cande
la
Be
am
An
gle
Fi
eld
An
gle
All photometric data in this document was prepared using standard production fixtures, and the Prometric™ CCD measurement system.
Fixtures were adjusted for blending (cosine) distribution, and were tested with a calibrated lamp at its rated voltage. All data were normalized to nominal lamp lumens.
To determine illumination in footcandles or lux at any throw distance, divide candlepower by distance squared.
* (distance from origin) = (throw distance) x (throw distance multiplier)