Via Pro User’s Guide – TouchChat
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Setting the Scanning Style
You can choose to have the system automatically scan or to step to each location. With step-scanning, a
switch must be pressed to move the scan to each button, one at a time. With auto-scanning, a switch
must be pressed to start the scan and the system will continue to scan until the switch is pressed again.
To set the scanning style, choose
Settings
>
General
>
Accessibility
>
Switch Control
>
Scanning Style
.
Three scanning styles are available: Auto Scanning, Manual Scanning, and Single Switch Step Scanning.
Auto Scanning
Auto Scanning moves from item to item automatically after a specified duration. When Auto Scanning is
selected, these timing settings are available.
Setting
Description
Auto Scanning Time
Determines how fast scanning performs with Auto Scanning turned on
Pause on First Item
Determines how long Auto Scanning will wait after input
Loops
Determines how many times each item is visited prior to stopping the scan
Move Repeat
Determines how long before “Move to Next/Previous Item” is repeated
while a switch remains pressed
Manual Scanning
Manual Scanning allows the user to step from item to item by activating one switch and then select an
item by activating a second switch. When Manual Scanning is selected, these timing settings are
available.
Setting
Description
Auto Hide
Determines how long it takes for the scanning interface to disappear due to
inactivity
Move Repeat
Determines how long before “Move to Next/Previous Item” is repeated
while a switch remains pressed
Single Switch Step Scanning
Single Switch Step Scanning allows the user to step from item to item by activating the switch. When the
user reaches a desired item, he or she stops activating the switch for a specified dwell time. The item is
then selected automatically. When Single Switch Step Scanning is selected, these timing settings are
available.
Setting
Description
Dwell Time
Determines the duration before the user can select an item.
Auto Hide
Determines how long it takes for the scanning interface to disappear due to
inactivity
Move Repeat
Determines how long before “Move to Next/Previous Item” is repeated
while a switch remains pressed
