BendixKing SKYMAP IIIC - Manual (Page 54)

DETAILED OPERATION
DATA INPUT
The Tracker IIIC has no internal GPS receiver and so requires a data input from a
separate GPS or LORAN unit in order to function in Map Mode. If required, the Skymap
IIIC can also be run in Tracker mode using an external GPS or LORAN unit. (Refer to
Data In/Out in the Setup Screens Section of the Manual). The following text is valid for
Skymap IIIC also if set to Tracker mode.
Your Tracker IIIC unit is supplied complete with a power/data cable, which has red, blue,
yellow and green cores and a braided screen. The red and blue cores are for connection
to an external DC power supply rated between 10V and 33V. The yellow core is the data
input cable for connection to your GPS or LORAN.
To operate correctly Tracker IIIC requires a 1200, 4800 or 9600 baud NMEA 0183 data
sentence containing latitude, longitude, track, and ground speed information. This can
take the form of a single RMC sentence or a combination of GGA and VTG sentences.
Alternatively a 1200, 4800 or 9600 baud Trimble TNL, Garmin AIU or King equivalent
ARNAV R-30 sentence may be used. A third alternative data input is the Northstar M3
binary data format at 1200 baud.
To connect the Tracker IIIC to the GPS or LORAN source unit strip the outer cable
insulation back a short way and pull back the screening braid to reveal the four inner
plastic covered cores. The screening braid of the cable should be twisted into a single
core. The red and blue cables should be connected to an external power supply (red is
+ve). The screening braid and blue cable core should be connected to the same –ve
power supply as the GPS/LORAN. This provides a return path for the data output. You
are now ready to make data connection to your GPS or LORAN unit. The input is RS232,
RS422 and NMEA 0183 compatible.
D
E
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A
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E
D
O
P
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R
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When connecting to an RS232 or NMEA device, yellow should go to DATA OUT (A line).
When connecting to an RS422 device, yellow should go to TX-. Do not connect to
RS422 TX +.
Example 1: To connect to a Bendix/King KLN89/89B (RS232), connect the yellow core of
the Tracker IIIC cable to pin 2 of the KLN device. Connect the blue core and screen of the
Tracker IIIC cable are connected to the to the same –ve supply or A/C ground as pin 14 of
the KLN device.
Example 2: To connect to a Bendix/King KLN90/90B (RS232), connect the yellow core of
the Tracker IIIC cable to pin 13 of the KLN device. Ensure the blue core and screen of the
Tracker IIIC cable are connected to the to the same –ve supply or A/C ground as pin 27 of
the KLN device.
Example 3: To connect to a Garmin GPS150/155 (RS232), connect the yellow core of the
Tracker IIIC cable to pin 19 (channel 1) or pin 24 (channel 2) of the Garmin device.
Ensure the blue core and screen of the Tracker IIIC cable are connected to the to the
same –ve supply or A/C ground as pin 26 of the Garmin device.
Example 4: To connect to a stand-alone Pronav or Garmin GPS 100 (NMEA), connect the
yellow core of the Tracker IIIC cable to the yellow core of the power/data cable. Ensure
the blue core and screen of the Tracker IIIC cable are connected to the same –ve supply
or A/C ground as the black core of the power/data cable of the GPS.
Once you have made the physical connection to your GPS or LORAN it is essential to
select an appropriate data output. This can be done by referring to the manual for your
GPS/LORAN and choosing an option that corresponds to one of the compatible data input
Rev 9 Jul 2006 3-11 Skymap/Tracker IIIC Pilot's Guide