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2. Getting to know your ALVA Braille Controller
The ALVA Braille Controller consists of a 40 cell or 80 cell Braille line with advanced
navigation possibilities. Optionally Braille Audio Feature Pack is available for the
ALVA BC640. This chapter will give a detailed overview of the lay-out of the ALVA
BC640 Base Unit, the ALVA BC640 Braille Audio Feature Pack and the ALVA BC680
unit.
2.1.
ALVA BC640 Base Unit
The ALVA BC640 Base Unit is placed correctly in front of you when the Braille cells
are located at the back of the flat surface and the thumb keys are facing towards you.
The ALVA BC640 contains:
1. 40-cell Braille display
2. eTouch keys (left) for panning left and right and screen reading functions
3. eTouch keys (right) for panning left and right and screen reading functions
4. Smartpad with 5-way navigation key and 4 keys for easy access to
mainstream devices
5. Thumb keys for panning, left, right, up and down and returning to the cursor
position
6. 40 Cursor Routing Keys
7. Power supply and mini USB connectors
8. On/off switch
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2.1.1. Surface and front panel lay-out
The ALVA BC640 is designed with a row of 40 Braille cells at the back of the flat
surface. In front of the Braille cells one row of small buttons can be found, known as
Cursor Routing Keys. Each Braille cell has a corresponding Cursor Routing Key that
can be used for multiple functions. On the left and right side of the Braille line you will
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