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BENDIX/KING KLN 90B
Rev 5, April/2003 10521I05.TDC Page 1-1
SECTION I
GENERAL INFORMATION
1.1 INTRODUCTION
This manual contains information relative to the physical, mechanical, and electrical character-
istics of the BENDIX/KING KLN 90B Global Positioning System (GPS) Receiver. General instal-
lation procedures are also included.
1.2 EQUIPMENT DESCRIPTION
The KLN 90B is a panel mounted, long range, GPS based airborne navigation system with a data
base. The primary purpose of the equipment is to provide the pilot with present position informa-
tion and to display guidance information with respect to a flight plan defined by the pilot. Flight
plan information is entered by the pilot via various knobs and buttons on the front panel. The dis-
play consists of a right and left page and a status line at the bottom of the display. The informa-
tion on the left page is controlled by the concentric knobs on the left side of the unit and the in-
formation on the right page is controlled by the concentric knobs on the right side of the unit.
Present position information will be displayed on the unit CRT or can also be displayed on an
EFIS or Radar Graphics unit.
The unit can use its present position information to determine crosstrack error, distance-to-way-
point, ground speed, track angle, time to waypoint, bearing to waypoint and advisory VNAV guid-
ance. The internal data base of the KLN 90B contains information concerning airports, VORs,
NDBs, intersections, and outer markers throughout the world. Waypoints are stored in the data
base by their ICAO identifiers. The ICAO identifiers are in most cases taken directly from Jeppe-
sen Sanderson or government aeronautical charts.
The information stored in the data base eventually becomes out of date; therefore, to provide a
means of updating the information, the database is housed in a cartridge which plugs into the
back of the KLN 90B. It is designed so that the user may easily remove the old database car-
tridge and install a current database cartridge. A secondary method of updating the database is
by loading the information via an IBM compatible laptop computer. For more information on avail-
ability and cost of updating the database of the KLN 90B refer to the KLN 90B Pilots Guide P/N
006-08773-0000.
1.3 TECHNICAL CHARACTERISTICS
1.3.1 ARINC 429 GAMA FORMAT INFORMATION
ARINC 429 is a serial bus interface that provides information to and from the KLN 90B to external
equipment. The serial bus conforms to ARINC 429 specifications for electrical characteristics,
receiving, and transmission interval. The format of the labels are GAMA 429 format.