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Digital Map Unit

Technical Information

Catalogue No: C1173
Category: Navigation/Inertial
Object Type: Signal/Data Processor
Object Name: Digital Map Unit
Part No: 3887/56100/blank/blank
Serial No: 002
Manufacturer: Ferranti
Division: Unknown
Year of Manufacture: 1995
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Rack RAA08 [Main Store]

Digital Map Unit
3887/56100/ /
Ser No 002


The CAGE Code K0662 in 1995 refers to Ferranti.

This unit now only contains two circuit boards, power supply and its interconnections.

The GEC Ferranti digital map generator (DMG) has been developed to meet the mission requirements of the next generation of combat aircraft. Housed in a 3/4 ATR box, the DMG is suitable not only for these new aircraft but also for a large number of retrofit applications. The experience gained in developingand manufacturing moving map displays for the F/A-18 Hornet, Jaguar, Tornado and Harrier has enabled GEC Ferranti to optimise the DMG to provide maximum flexibility with minimum pilot workload. The video output of the DMG can be displayed on the normal range of cockpit displays.

The DMG hardware and software can handle both true digital maps and digitised chart infor-mation. The digital database can be held in solid- state or in optical disc. Both of these options have been developed. Features on the presentation can be selectively displayed or erased. Hazards such as terrain and obstacles above aircraft altitude can be made to stand out in contrasting colour. Safe areas occasioned by terrain masking can be depicted, and areas may be viewed from different angles and altitudes. Data updating is rapid and simple. The map is displayed on a GEC Ferranti colour electronic display which incorporates a multi-function keyboard and electronically generated symbology. The DMG was fitted to the Royal Air Force Tornado mid-life update.


The GEC Ferranti remote map generator (ROMAG) Type 2052 is an electronic unit which generates a television signal, representing a topographical map, displayed on a multi¬function display. The map, controlled by the aircraft navigation computer, indicates present position, route information or other map data. A composite display can be produced by superimposing signals from other sources, for example graphics and text to produce flight plans and situation displays, or the scan converted output of a ground mapping radar can be superimposed on the map.

The system, which can be situated in the cockpit or remotely in an equipment bay, provides a full topographical map without the need for a dedicated display. There are five map modes: north up, track up, track decentred, look ahead and zoom. The modular construction and automatic alignment enhances ease of map film strip change.

ROMAG can provide a colour topographical map at 1:2 million, 1:1 million, 1:500000, 1:250 000 and 1:50 000scales, an indexed library

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