Airfield Lighting
Safegate Group
Manual
Date: October 2016
Ref: SL-RE-E_SL-RT-E_SL-RN-E_SL-RTN-E_SL-SB-E
Version: 1.4
Page 20 of 42
2.7
SIGHT DEVICE FOR THE LIGHT FIXTURE
This SafeLED Elevated light fixtures are used on airfields to guide moving aircraft. It is
therefore very important to align the light fixtures both vertically and horizontally
according to the regulations. This can be done with the help of a Sight Device placed
on the light fixture during installation.
The Sight Device is equipped with an aiming telescope which can be adjusted to three
different pre-set toe-in angle options, 0°, 3.5° Right and 3.5° Left. The scope can be
rotated ±360° in steps of 90°. The aiming telescope is used to facilitate the azimuth
adjustment of a light fixture. The sight device does also have a circular spirit level to
help adjust the light fixture vertically.
FIGURE 18
– THE SIGHT DEVICE
The Sight Device has three pre-set azimuth-angle settings, 0°, 3.5° Left and 3.5°
Right, were
Left
and
Right
represents the desired direction of the emitted light beam
for the light fixture. All bidirectional light fixtures should use the 0° setting. For
unidirectional light fixtures, choose the setting that corresponds to the angle in section
Azimuth angle.
Note: Manual toe in adjustment should always be towards the runway
centerline.
3.5° Right
0°
3.5° Left
FIGURE 19
– THE DIRECTION OF THE EMITTED LIGHT FOR THE
THREE DIFFERENT PRE-SET AZIMUTH-ANGLE OPTIONS
