TM-9-1200-215-34-P
AUTOMATIC FIRE CONTROL SYSTEM (AFCS)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
FEBRUARY 1999
TM-9-1200-215-34-P - Page 95 of 266
TM 9–1200–215–34&P
3–4
DISPLAY MODULE
SWITCH PANEL
J1
Figure 3–1. Display Unit Block Diagram
b.
The DU consists of:
D
Enclosure with handle (electronic housing)
D
Display module
D
Switch panel
D
Electrical connector
D
Internal wiring
(1)
The enclosure is a 16.5 x 13.0 x 4.5 inch cast aluminum electronic housing with an attached folding
handle. The enclosure provides environmental protection to the internal components of the DU.
(2)
The display module is an electro–optical assembly which consists of a 4 x 8 inch thin–film
electroluminescent panel, control circuitry, and a power supply. The display module is capable of 256 x 512 pixels
resolution. It is capable of alpha–numeric and graphical display. The display is readable in all anticipated levels of
illumination.
(3)
The switch panel is an electromechanical assembly which contains 23 pushbutton switches, three toggle
switches, and two indicator lights. The indicator lights provide critical status information to the operator outside of
the display module. The operator enters commands through the switch panel either via the keypad, cursor
controls, or toggle switches.
(4)
The electrical connector is a standard 41 pin cylindrical connector marked J1. This connector provides
the sole I/O access to the Control Unit (CU).
(5)
The internal wiring consists of electrical interconnection of the display module, the switch panel, and the
electrical connector. This interconnection is divided into two cable assemblies. The pinouts of the cable
assemblies are diagrammed in paragraph 3–10.
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