The DL-800\900 Data Loader is used to transfer
navigation-related data to
the
NAV computer. The DL-800/900 has the capacity ~o transfer in excess
of 600k bytes stored on a 3-1/2-inch minidiskette. It has an RS-422
interface with the NAV computer.
The DL-800/900 is also used to download
trend and limit exceedance data from the FC-880 Fault Warning Computer
(FWC) through an RS-232 interface with the FWC.
9.
c. (1) Navigation Database Loading
- The DL-800/900 Data Loader provides
transfer of data derived from the Jeppesen database from a 3-l/2-
inch floppy disk to the NAV computer local EEPROM memory. This data
includes navaids, waypoints, airports, airport runways, airport
procedures, and jet routes from the Jeppesen data source. The
database is updated every 28 days. The data transfer rate is 312k
baud.
The total time required to load a full database is
approximately 8 minutes. The LEFT/RIGHT/AUX switch on the front of
the data loader is used to select which RS-422 port will be used to
output data.
(2) Flight Plan Loading - The DL-800/900 Data Loader also has the
capability of interfacing with a ground-based Lockheed JetPlan
Computer or equivalent. It is capable of transferring an optimized
flight plan from the ground-based computer to the navigation
computer via a 3-1/2-inch floppy disk.
(3) Trend and Limit Exceedance - The DL-800/900 Data Loader interfaces
with the FWC through an RS-232 bus. This single RS-232
bus is relay
switched between the two FWCS. Control of this relay is by a switch
located in the right avionics bay. Data download is independent of
the LEFT/RIGHT/AUX switch.
(4) AFIS Flight Plan Loading
- The DL-800/900 Data Loader also has the
capability of transferring a flight plan
in AFIS format to the
navigation computer via a 3-1/2 inch floppy disk.
22-14-00
Page 198~140
Apr 15/93
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