1.4 Abbreviations
The following is a list of abbreviations used in the description of this product:
FAA
United States Federal Aviation Administration
FHWA
Federal Highways Administration
HHC
Handheld Controller
ITE
Institute of Transportation Engineers
MUTCD
Manual on Uniform Traffic Control Devices
OBUI
On Board User Interface
VTSCH
Vehicle Traffic Control Signal Heads
1.5 Limitations of scope
This manual supplement provides an overview of the Carmanah R247-G flashing beacon system with
wireless remote control.
This manual is supplemental to the general user manual and is not intended as a replacement. Consult the
R247-G general user manual for all other aspects of setup, operation, maintenance and troubleshooting.
This manual supplement provides rudimentary information for the Carmanah aviation products wireless
handheld controller as it applies to the R247-G beacon system only. Consult the wireless handheld
controller manual for all other aspects of operation, maintenance and troubleshooting.
2.0
Theory of operation
The Carmanah R247-G is a solar-powered vehicle traffic flashing beacon system designed to provide continuous
24-hour visual warning of mandatory roadway stop points and hazards. The R247-G provides an on-off flash
pattern compliant with U.S. Federal Highways Administration, Manual on Uniform Traffic Control Devices (MUTCD).
The R247-G also complies with the Institute of Transportation Engineers, Vehicle Traffic Control Signal Heads
(VTCSH) requirement for beam shape and chromaticity.
Note:
This system has been factory-configured to meet the VTCSH requirement for light output intensity: 365 candelas
The R247-G product is designed to operate continuously 24-hour per day. The R247-G product described herein
has been fitted with a 900 MHz radio receiver, which can provide on-off control of the system or temporary timed
15-minute on cycles. See section 5.0 of this document for a table describing wireless control states and operational
modes.
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