User's Manual

CB2-BLUE15M-TCU Owner’s Manual Draft
Page 10 of 10
5 System Interfaces
This section describes the user interface of TCU system. These include the various components for
user interaction (e.g. the head unit display, head unit buttons and knobs, steering wheel buttons,
microphone/speaker).
5.1 User Interfaces
The user and the TCU system interact through various interfaces including:
• Buttons on the steering wheel
• Head Unit (In-vehicle controls)
• Head Unit Display (In-vehicle display)
• Microphone
• Speaker (Audio System)
The following sections provide further information on each of these user interfaces.
5.1.1 Steering Wheel Buttons
Depending on the vehicle type, there are up to 4 steering wheel buttons that provide input to the
vehicle audio system.
5.1.2 Head Unit
The head unit (in-vehicle controls) incorporates several controls and is usually integrated with the
radio system and can include a small display.
5.1.3 Head Unit Display
In a vehicle with the navigation option, a larger screen which is integrated with the GPS feature is
available to display prompts sent to it by the TCU.
5.1.4 Microphone
The Microphone is responsible for capturing the user’s voice input for voice recognition (Dial by
Voice tag) and to support conversations while a call is active.
5.1.5 Speaker
The TCU system uses front left and front right speaker. The Bluetooth Audio system uses all the
speakers in the vehicle.