BendixKing KLN 90B - Manual (Page 16)

2-4 Rev 1
2.4.1 Computer Updating Of The Database
Update information is sent to you on several 3.5” disks.
In order to use this update method you must have access
to an IBM compatible computer having a disk drive capa-
ble of using and booting (loading) from 3.5” 1.44
megabyte high density disks. This computer also needs
to have an available COM 1 or COM 2 serial port. In
addition, an optional PC Interface kit must be used.
Included in the kit are a data loader jack (wired to the
KLN 90B and usually installed in the aircraft’s instrument
panel) and an interface cable that plugs into both the
computer and into the data loader jack.
CAUTION: The database must be updated only while
the aircraft is on the ground. The KLN 90B does not
perform any navigation functions while the database
is being updated. Since a database update takes
approximately 10 minutes it is a good idea to turn off
all electrical equipment on the aircraft except for the
KLN 90B to avoid running down the aircraft battery.
NOTE: The disks sent to you can only be used to update
one KLN 90B, although they can update this specific unit
numerous times. The first time the disks are used in an
update operation, a unique identification code from the
KLN 90B being used is uploaded to the disks. These
disks may be used in this specific KLN 90B an unlimited
number of times which could be required if you switch
back and forth between the North American and
International data bases during one update cycle. These
disks may not, however, be used to update other KLN
90Bs. This update protection ensures that Jeppesen
Sanderson is properly compensated for the use of their
NavData™.
Follow these steps to update the KLN 90B:
1. Plug the 9 pin female connector end of the interface
cable into a COM serial port of the computer. If the com-
puter has COM 1 and COM 2 serial ports, either may be
used. Some computers use a 9 pin COM serial port con-
nector while other computers use a 25 pin connector. If
the computer being used has a 9 pin connector, the inter-
face cable connector will plug directly into the computer’s
9 pin connector. If the computer’s COM serial port uses a
25 pin connector, use the 25 pin to 9 pin adapter included
in the PC interface kit to adapt the interface cable’s con-
nector to the computer’s connector.
2. Plug the other end of the interface cable (4 conductor
male plug) into the data loader jack that is mounted in the
aircraft.