Configuring Switches; Setting Up Touchscreen Scanning; Selecting The Scan Pattern; Configuring Speech Display Bar (Sdb) Scans - Saltillo TouchChat Express 8 Guia Del Usuario

Configuring Switches

To use an external switch, plug the switch into either switch jack A or switch jack B on the side of the
device. You can choose to have scanning activate automatically, or you can choose to either hold the
switch or step to each location. With Auto Scan off, a switch activation is required to move the scan
through each button, one at a time.
1. To enable scanning, choose Menu > Settings > Scanning > Scanning Enabled.
2. Choose Number of Switches and select 1 Switch or 2 Switches.
3. To set scanning to activate without holding a switch, choose Auto-Scan.

Setting up Touchscreen Scanning

There are times when a user is not capable of activating specific areas on the screen. For example,
maybe the user does not have the pointing skills to hit one button. Using the touchscreen to scan allows
the user to tap anywhere on the screen to initiate a scan of the buttons. In this scenario, the device
screen acts as a single switch.
1. Choose Menu > Settings > Scanning > Enable Scanning.
2. Choose Use Screen As Switch.
3. Configure other settings as appropriate.

Selecting the Scan Pattern

To select the scanning mode:
1. Choose Menu > Settings > Scanning > Scanning Type.
2. Choose Sequential or Row/Column.
Using Sequential Scan Mode
A sequential scan steps through the buttons from left to right beginning in the first row. When the
button you want is highlighted, activate your switch.
Using Row/Column Scan Mode
A row/column scan highlights each row of buttons beginning with the top row and move down the
screen. When the row that contains the button you want is highlighted, activate your switch. The scan
will then step through the buttons from left to right across the row. When the button you want is
highlighted, activate your switch.

Configuring Speech Display Bar (SDB) Scans

To include the SDB in scans:
Selecting the SDB speaks the current text. Turn scanning of the Speech Display Bar on or off by choosing
Menu > Settings > Scanning > Scan Speech Display Bar.

Configuring Empty Cells Scans

Turn scanning of empty button areas on or off by choosing Menu > Settings > Scanning > Skip Empty
Cells. When selected, scanning will skip over an area without a button or a button that only has a speech
message action but no text.
TouchChat Express User's Guide 66