For users without the motor skills to allow operation via the touch pads, the unit may be operated
in one of two switch scanning modes- Single-Switch Scanning and Two-Switch Scanning. The touch
pads may still be used even when switch scanning is in use.
Single-Switch Scanning
To operate the unit in single-switch scanning mode, first ensure that Learn Mode 1 is set to ‘1’
(this is the default setting) and then plug your choice of switch into socket 2 on the rear of the
unit [8]. Any type of switch may be used- for example conventional switches such as the Smoothie
from Pretorian or squeeze switches, pillow switches, sip/puff switches etc. Any switch which
terminates in a 3.5mm jack plug will work.
To begin scanning, press the switch. The LED [2] adjacent to the first touch pad lights, then the
second and so on until all the touch pads have been scanned, then returning to the first. This
process repeats until all touch pads have been scanned four times. The unit emits a short beep
each time the scanning advances. Note that the tone for the first touch pad is higher than the
others to allow users with visual impairments to count the number of beeps to know the exact
scanning position at any moment in time.
If no further switch activity is detected after scanning four times, scanning stops to conserve
battery life. It may be re-started at any time by pressing the switch. The scanning rate may be
changed at Learn Mode 2 to suit individual users.
To stop scanning at any point, simply press the switch. To then operate that particular touch pad,
press the switch again. You may operate the touch pad any number of times while its adjacent LED
[2] is lit.
After a period of not operating the switch which is set by the Dwell Time (Learn Mode 3), the unit
re-commences scanning.
Two-Switch Scanning.
To operate the unit in two-switch scanning mode, first ensure that Learn Mode 1 is set to ‘2’ and
then plug your choice of switches into sockets 1 and 2 on the rear of the unit. Any type of switch
may be used- for example conventional switches such as the Smoothie from Pretorian or squeeze
switches, pillow switches, sip/puff switches etc. Any switch which terminates in a 3.5mm jack plug
will work.
The switch in socket 1 [9] is used to Scan from one touch pad to another while the switch in socket
2 [8] is used to Select a particular touch pad.
To scan to the required touch pad, press switch 1 successively, or alternatively press and hold it
and the selected touch pad will advance automatically once per second. Once the LED [2] adjacent
to the required touch pad is lit, press switch 2 to operate it.
After 30 seconds of non-use, the LEDs are extinguished to conserve battery life. They are re-lit as
soon as either switch is pressed.
Operation using external Switches (Switch Scanning)
Summary of Contents for EnvirON
Page 11: ...Notes ...
