Driver Display Unit
The VORAD system controls are located in the driver interface unit (DIU). The DIU provides visual and audio warnings and messages. Menu selections are made by pressing the up, down, and OK buttons. See Fig..
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Fault Indicator
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Info Indicator
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Following Distance Lights
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Ambient Light Sensor
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Collision Alert Lights
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User Interface Keypad
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Graphic Display
Fig. 1, Driver Interface Unit (DIU), VORAD
The DIU has the following features:
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An internal speaker for audio warnings.
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Graphic display for visual warnings, menus, and other information.
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User interface keypad for scrolling up, scrolling down, and selection.
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Ambient light sensor, for auto illumination adjustment for daytime or night-time display.
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Programmable for driver ID with use of a PIN.
The following lights illuminate on the DIU to indicate a message:
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Red LED—illuminates with the collision alert display.
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Yellow LED—illuminates with headway alert display.
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Orange LED—illuminates when a system failure occurs.
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Blue LED—illuminates when information is available.
Immediately after each battery power-on cycle, the DIU initializes by executing self-test routines. During the initialization time, the screen, see Fig. is displayed and all the LED lamps are activated (power-on bulb check) for approximately 3 seconds, along with a power-up tone.
When initialization is complete, the DIU displays the VS-400 system configuration screen. See Fig. the screens for the VS-400 configured for Collision Warning System (CWS) and SmartCruise™, and for CWS only.