BendixKing SKYMAP IIIC - Manual (Page 25)

BASIC OPERATION
POWER AND ANTENNA CONSIDERATIONS
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Power
Your unit is designed to operate from an external source providing a voltage between 10V
to 33V DC. An optional AC Power (either 110V or 220/240V) Adapter is also available as
an accessory for home use.
A pre-wired connector is supplied with your unit. The tail end of which either has a Cigar
Adapter (Skymap IIIC) or flying leads (Tracker IIIC). The cable uses four coloured cores
and a braided screen.
The red and blue cores of the cable should be connected to any DC supply between 10
and 33 Volts, capable of supplying 2 Amps.
1. Connect the RED core via a 3 Amp fuse to the positive (+) side of a 10V-33V DC
power source.
2. Connect the BLUE core and the braided screen to the negative (-) side of the same
power source.
You may also power your unit from a 12 or 24 volt automobile type cigarette lighter socket.
However certain of these lack proper circuit protection and may provide an unreliable
supply so we recommend that wherever possible an approved aircraft power source be
installed by a licensed radio engineer.
The yellow and green cores are the data in (yellow) and data out (green) lines. If your unit
is a Tracker IIIC, the yellow core (data in) should be connected to the data output line of
your GPS. Refer to the Data Input Section of this Manual for more details.
If your unit is a Skymap IIIC, the yellow core (data in) can also be connected to the data
output line of another GPS, if required and the Skymap IIIC can be switched to Tracker
mode and used as a repeater for that GPS.
Your unit also has a differential serial data input and external alarm outputs available on
the 9 way connector for optional use. The green core of the cable is connected to the
serial data output pin and may be used to drive an AirData computer, a plotter or a data
recording device (see SECTION 3 APPENDIX F for details of data output).
Rev 9 Jul 2006 1-16 Skymap/Tracker IIIC Pilot's Guide