
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.
PAGE 3 OF 3
DTH-4-ADJ-ACCENT
PHOTOMETRY
4” DTH
T4/T6 Adjustable Accent
Ceramic Metal Halide Lamp
DTH T4 39M 4 NARROW
CMH39/TC/U/830/G8.5 LAMP, 3400 RATED LUMENS, 0.5 S/MH, TEST NO. LTL15047
DTH T4 39M 4 MEDIUM
CMH39/TC/U/830/G8.5 LAMP, 3400 RATED LUMENS, 0.8 S/MH, TEST NO. LTL15364
DTH T4 39M 4 WIDE
CMH39/TC/U/830/G8.5 LAMP, 3400 RATED LUMENS, 0.9 S/MH, TEST NO. LTL15363
DTH T4T 20M 4 MEDIUM
CDM-TM 20W/830 LAMP, 1500 RATED LUMENS, 0.7 S/MH, TEST NO. LTL15419
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
PHOTOMETRY NOTES
• Tested to current IES and NEMA standards under stabilized laboratory conditions.
• Actual performance may differ as a result of end-user environment and application.
• Consult factory or IES file for microgroove baffle, black cone or other photometric reports.
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
1581.0
1833.6
2114.9
2175.4
0.0
2175.4
46.5
53.9
62.2
64.0
0.0
*64.0
*E ciency
40°
50°
60°
70°
80°
pf
pc
pw
20%
80% 70% 50%
50% 30% 50% 30%50% 30%
1
2
3
4
5
6
7
8
9
10
.71
.66
.62
.58
.54
.51
.49
.46
.44
.42
.69
.63
.58
.54
.51
.48
.45
.43
.41
.39
.69
.65
.61
.57
.54
.51
.48
.46
.44
.42
.68
.62
.58
.54
.50
.47
.45
.43
.41
.39
.67
.63
.59
.56
.53
.50
.48
.45
.43
.42
.66
.61
.57
.53
.50
.47
.44
.42
.40
.39
From 0° AveLumens
0
5
15
25
35
45
55
65
75
85
90
5511
4957
2538
960
396
231
97
33
18
7
0
432
698
451
253
184
98
34
19
7
50% beam angle
26.1°
10% beam angle
54.3°
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
182.2
98.0
61.1
41.7
30.2
2.6
3.5
4.4
5.3
6.3
91.1
49.0
30.5
20.8
15.1
5.6
7.7
9.7
11.8
13.8
18.2
9.8
6.1
4.2
3.0
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
1653.7
2011.4
2280.5
2334.5
0.0
2334.5
48.6
59.2
67.1
68.7
0.0
*68.7
*E ciency
0° 10° 20° 30°
40°
50°
60°
70°
80°
90°
500
pf
pc
pw
20%
80%70% 50%
50%30% 50%30% 50%30%
1
2
3
4
5
6
7
8
9
10
.76
.70
.65
.61
.57
.53
.50
.47
.45
.43
.74
.67
.62
.57
.53
.49
.46
.43
.41
.38
.74
.69
.64
.60
.56
.53
.50
.47
.45
.42
.73
.66
.61
.56
.52
.49
.46
.43
.41
.38
.71
.67
.62
.59
.55
.52
.49
.46
.44
.42
.70
.65
.60
.55
.52
.48
.45
.43
.40
.38
From 0° AveLumens
0
5
15
25
35
45
55
65
75
85
90
2738
2722
2578
1516
552
250
81
32
14
5
0
260
706
688
358
190
80
33
15
6
50% beam angle
46.2°
10% beam angle
71.5°
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
90.5
48.7
30.3
20.7
15.0
4.7
6.4
8.1
9.8
11.5
45.3
24.3
15.2
10.4
7.5
7.9
10.8
13.7
16.6
19.5
9.1
4.9
3.0
2.1
1.5
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
1509.3
1941.7
2255.5
2315.6
0.0
2315.6
44.4
57.1
66.3
68.1
0.0
*68.1
*E ciency
40°
50°
60°
70°
80°
400
800
pf
pc
pw
20%
80% 70%50%
50%30% 50% 30%50% 30%
1
2
3
4
5
6
7
8
9
10
.75
.69
.64
.59
.55
.51
.48
.45
.42
.40
.73
.66
.60
.55
.51
.47
.43
.40
.38
.36
.73
.68
.63
.58
.54
.51
.47
.44
.42
.39
.72
.65
.59
.54
.50
.46
.43
.40
.38
.35
.71
.66
.61
.57
.53
.50
.46
.44
.41
.39
.69
.63
.58
.53
.49
.46
.43
.40
.37
.35
From 0° AveLumens
0
5
15
25
35
45
55
65
75
85
90
1872
1906
2107
1650
673
269
94
35
16
6
0
185
589
735
432
220
94
36
18
6
50% beam angle
55.4°
10% beam angle
79.5°
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
61.9
33.3
20.7
14.2
10.3
5.8
7.9
10.0
12.1
14.2
30.9
16.6
10.4
7.1
5.1
9.1
12.5
15.8
19.1
22.4
6.2
3.3
2.1
1.4
1.0
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
874.8
1021.2
1139.0
1161.2
0.0
1161.2
58.3
68.1
75.9
77.4
0.0
*77.4
*E ciency
40°
50°
60°
70°
80°
300
600
900
pf
pc
pw
20%
80%70% 50%
50%30% 50%30% 50% 30%
1
2
3
4
5
6
7
8
9
10
.86
.80
.75
.70
.66
.62
.59
.56
.53
.50
.84
.77
.71
.66
.61
.58
.54
.51
.49
.46
.84
.78
.74
.69
.65
.61
.58
.55
.53
.50
.82
.76
.70
.65
.61
.57
.54
.51
.48
.46
.81
.76
.72
.67
.64
.60
.57
.54
.52
.49
.80
.74
.69
.64
.60
.57
.53
.51
.48
.46
From 0° AveLumens
0
5
15
25
35
45
55
65
75
85
90
1778
1746
1480
676
224
117
34
13
6
2
0
166
398
311
146
85
33
13
6
2
50% beam angle
39.8°
10% beam angle
64.8°
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
58.8
31.6
19.7
13.4
9.8
4.0
5.4
6.9
8.3
9.8
29.4
15.8
9.8
6.7
4.9
7.0
9.5
12.1
14.6
17.1
5.9
3.2
2.0
1.3
1.0
Komentáře k této Příručce