FTS 371 SMART USER MANUAL
Flash Technology, LLC
Revision 4 – 9/7/2021
44
FLASHHEAD/BEACON LED INDICATORS
Indicator LEDs on the PCB provide status information helpful in troubleshooting.
Table 4.3 – Beacon LED Indicators Descriptions
LED
Indication
Power
Steady on to indicate the board’s 5V power supply is on.
AC Sense
On when AC/DC source power is applied to the Beacon. When powered by FTS 371
controller, this LED will flash corresponding to the on/off pulsing power from the controller
that communicates flash type and specification.
Flash
On when the LED strings are On.
Fault
On when a fault is detected on either beacon LED string. Turns on and off each flash cycle.
When 4 consecutive flash cycle faults are detected, the beacon LED strings turn off until the
next day to night transition or after removal of applied power for more than 30 seconds.
ICAO
On when the board is running in ICAO mode. Off in FAA mode.
FLASHHEAD/BEACON SWI TCH BANK
When the FTS 371 FH is not connected to an FTS 371 FTC controller, the switch bank will be
used to program the beacon for a variety of installation situations.
However when an FTS 371
controller is connected, the flash head switch bank settings will be ignored.
FLASHHEAD/BEACON SWI TCH DEFINITIONS
(When an FTS 371 FTC controller is not connected.)
Table 4.4 – Beacon Switch Position Descriptions
Flash Head Mode
Switch Position
Left
Right
EFF / LEG
EFF - shorter flash duration that uses
less energy
LEG - longer flash duration to resemble an
incandescent flash
ICAO / FAA
ICAO - international air navigation
standards
FAA - domestic air navigation standards
20 FPM / 30 FPM
20FPM - 20 flashes per minute
30FPM - 30 flashes per minute
