LXNAV LX8000, User Manual

Page: 95 / 110

LX8000 (LX8080) Version 2.6 September 2011
Page 95 of 110
10 Options
10.1 Flarm
Before using Flarm it is highly recommended to read the Flarm user manual which
can be downloaded from www.flarm.com. Respect all limitations listed in this
document.
Flarm is a collision avoidance system developed by Flarm Technologies from Switzerland.
The Flarm module consists of following main parts: GPS receiver (common to both the
LX8000 and Flarm), microcontroller unit, radio transceiver pressure altimeter and an optional
external indicator. All electronic parts are integrated into the LX8000 cabinet. An exception
is the radio communication antenna and the Flarm External Display. Some input is possible
via the external display.
10.1.1 Flarm External LED Display
The Flarm external display is mainly used as a collision warning interface and status
indicator. To connect both units use the original cable (telephone type) delivered with the
unit. Use the connector on the back side of the LX8000 marked FLARM. The unit is
powered from the LX8000.
Radial positioned red/green LEDs define the direction to the near glider (top LED active
means frontal collision risk). Two additional red/green light emitting diodes marked
above
and
below
inform about vertical position of the glider when close. The
Mode
button is
used to control the unit. Four red/green LEDs indicate the Flarm status. The external
display has two modes of operation:
•
Warning mode
will activate a red blinking LED if another glider equipped with Flarm is
close and a collision risk is predicted. An audio warning will also be heard. A higher
collision risk will increase the blinking frequency and similar with audio. The warnings
are classified into three levels (see the Flarm manual for details). The first level is
approximately 18 seconds before predicted collision, the second level approximately 13
seconds before predicted collision and third level approximately 8 seconds before
predicted collision.
•
Nearest mode
will show the direction to the nearest glider located within radio range.
One green LED will light permanently and there will be no audio. The unit will change
over to
warning mode
automatically if the warning criteria are satisfied and will revert
to
nearest mode
after the collision risk disappears.
The external displays produced by LX Navigation will change over to Demo mode
after
MODE
button is pressed briefly 10 times. The nearest mode and all possible
warnings will then be displayed. To return to normal operation switch the unit off
and back on again.
Pressing the
MODE
selector and holding down for approximately 4 seconds will deactivate
the Flarm external display for 5 minutes; no warnings and no near information will be
displayed during this period. This will be indicated by only the Power LED being on.