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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. This chapter will give a detailed overview of the lay-out of the
ALVA BC640 Base Unit 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. Two eTouch keys (left of the Braille line) for panning left and right or other
screen reading functions
3. Two eTouch keys (right of the Braille line) for panning left and right or other
screen reading functions
4. Smartpad with 5-way navigation key and 4 function keys
5. Five 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 connector
8. On/off switch
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
find two groups of two keys. These so-called eTouch keys can be used for Braille
panning left and right as well as various other screen reader functions.
Page 7
ALVA BC6
English
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