ADB Safegate L-854, User Manual

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3.3 Interfacing the Radio Controller
You can directly connect the Radio Controller to the control interface of the airfield lighting power regulators, to an L-890
ALCMS system, or use a relay interface panel to provide additional switching capabilities or reduce the load on the Radio
Controller. Configure the Radio Control system so the runway lights are on whenever the other lighting systems serving the
runway are on, except during daytime operations.
Configure the Radio Control system with a day mode to power only those lighting systems that are useful during the day. This
mode can be selected automatically by means of a photocell or by a manual switch. Using the day mode, however, means
that the daytime IFR procedures associated with the deactivated lighting systems cannot be used.
In areas with heavy voice traffic on the Radio Controller frequency, there may be nuisance activation due to random
microphone clicks. The Decoder Disable can be wired through the terminal block to an external switch, relay or external
photocell. Placing a jumper or closed switch between terminals 1 and 3 of the terminal block will disable the decoder. See
Table 4 .
When the air-to-ground Radio Control is used at night, the lighting system may not be powered for long periods of time. The
default setting for the controller is the recommended FAA time of 15 minutes. Other times of 30, 45 or 60 minutes can be
selected from the front panel.
3.4 Intensity Control
Table 3 provides guidance on how to interface the Radio Control with the intensity settings of the airport lighting system. For
example, connect a lighting system with five intensity settings so three clicks of the microphone would power brightness
setting 1 or 2, five clicks would power setting 3, and seven clicks would power setting 5. The airport authority may select
either setting 1 or 2 for the lowest brightness setting, depending on the background lighting at the airport.
Table 3: Interface of Radio Control with Airport Visual Aids
Lighting System
Number of Intensity
Steps
Status During Idle
Periods
Intensity Setting Selected per Number of
Microphone Clicks
3 clicks 5 clicks 7 clicks
Approach Lights
2
3
5
Off
Off
Off
Low
Low
1 or 2
Low
Medium
3
High
High
5
Edge Lights: Low
Intensity Med.
Intensity
High Intensity
1
3
5
Off
Off or Low
Off or Low
On
Low
1 or 2
On
Medium
3
On
High
5
Taxiway Edge Lights
1
2
3
Off
Off
Off
On
Low
Low
On
Low
Medium
On
High
High
Runway Centerline
Touchdown Zone
Lights
5 Off 1 or 2 3 5
Taxiway Centerline
Lights
3
5
Off
Off
Low
1 or 2
Medium
3
High
5
REILS
1
2
3
Off
Off
Off
Off
Off
Low
Off
Low
Medium
On
High
High
Visual Glideslope
Systems
3
5
Off
Off
On
Low
On
Medium
On
High
Notes
1
If the runway lights are left on during idle periods, other lighting systems may also be left on at a pre-selected brightness.
L-854 Radio Control Equipment
Options
10
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