ETC 426EDLT, 426EDLT-1 Data Sheet
®
Source Four® 26˚ETC
Ellipsoidal Series
S P E C I F I C A T I O N S
PHYSICAL
• Rugged, die cast aluminum construction
• Rotating shutter assembly ±25˚
• 20 gauge stainless steel shutters in a tri-plane assembly
• Interchangeable lens tubes with smooth-running teflon
guides provide nine user-fit field angle options
• Thermally insulated rear handle
• High impact, thermally insulated knobs and shutter handles
• Two accessory slots and a top mounted, gel frame retainer
• Steel yoke with two mounting positions
• Positive locking single-clutch fixture body
• Slot for glass or stainless steel patterns
• Wide accessory slot with sliding cover for motorized pattern
devices or optional iris
• UL and cUL Listed
ELECTRICAL
• 115-240V, 50/60Hz
• High temperature 3-conductor 36” leads in a glass fiber
outer sleeve
• Supports ETC Dimmer Doubling
LAMP
• 750W maximum
• HPL
–
compact tungsten filament contained in a krypton-
filled quartz envelope (see table for available lamp options)
• Patented filament geometry makes for extremely efficient
light collection and transmission
• Integral die cast aluminum heat sink lamp base
™
technology
S P E C I F I C A T I O N S
OPTICAL
• Re-optimized optical system for improved photometric
performance and field uniformity
• Projector-quality, high contrast aspheric lens
• Optional enhanced definition lens tube available for even
higher image quality
• Faceted borosilicate reflector with dichroic cold mirror coating
removes greater than 90% infrared radiation (heat) and
reflects greater than 95% of visible light
• Reflector secured with anti-vibration shock mounts
• Lens(es) secured with anti-vibration shock mounts
• Tool free, positive locking X, Y and Z lamp centering
adjustments, unaffected by relamping
• Beam edge continually adjustable hard-to-soft
• Interchangeable lens barrels permit selection of 5˚, 10˚, 14°,
19˚, 26˚, 36˚, 50˚, 70°, and 90° field angles as well as 19˚, 26˚,
36˚, and 50˚ EDLT lenses
O R D E R I N G I N F O R M A T I O N
Source Four
MODEL DESCRIPTION
426 26˚ ellipsoidal (black)
426-1 26˚ ellipsoidal (white)
ETC Source Four are supplied with C-clamp, color frame and 3’ (96cm) leads as
standard
Connector Designation
Use Suffixes below to specify Factory–Fitted Connector type
MODEL DESCRIPTION
-A Parallel-blade U-ground connector
-B Two-pin and ground, 20 amp connector
-C Grounded, 20 amp, twistlock connector
-M Dimmer Doubling Connector (NEMA L515P)
See back page for Source Four Accessories
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ETC
®
Source Four® 26˚
Ellipsoidal Series
P H O T O M E T R I C S
Photometric data below is measured with an HPL 750W/115V 300 hr lamp. To convert data when using any other HPL lamp, use the lumen or
candela multiplying factors (Lm MF or Cd MF) for that specific lamp, listed in the Lamps table in this datasheet. For lumen data, multiply by the
Lm MF. For candela or footcandle data, multiply by the Cd MF.
18˚ 25˚
Field Angle
Beam Angle
Throw Distance (d)
Field Diameter
Illuminance (fc)
Illuminance (lux)
15’
4.6m
6.7’
2.0m
783 196 87 49
8,432 2,108 937 527
30’
9.1m
13.4’
4.1m
45’
13.7m
20.1’
6.1m
60’
18.1m
26.8’
8.2m
To determine center beam illumination in footcandles at any throw
distance, divide candela by the throw distance squared.
For Field diameter at any throw distance, multiply the throw distance
by .45
For Beam diameter at any throw distance, multiply the throw
distance by .32
Iso-Illuminance Diagram
(Flat Surface Distribution)
Y
10%
50%
% illuminance
foot candle or lux
X
Source Four 26˚(cosine)
Degree Candela
26˚
176,255 13,690 9,040 62.5% 18.3
Field
Lumens
Metric Conversions: For meters, multiply feet by .3048
For Lux multiply footcandles by 10.76
Beam
Lumens
Efficiency
Cosine Candela Plot
200000
180000
160000
140000
120000
100000
80000
Candela
60000
40000
20000
0
-15 -12 -9 -6 -3 0 3 6 9 12 15
Degrees
Lumens
per watt
X
Y
Complete IES photometry data files (LM-63-02 format) may be downloaded from the ETC website.
Go to http://www.etcconnect.com/downloads.asp
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