How do I Scan Using a 2-Switch Access / Step Scanning?
2-Switch—Scan Mode 1
Scan Mode 1 is the default scan mode for 2 switches.
To Scan:
2 Single Switches (Auto)—Auto is the default. Each switch alternates the direction of the scan between up/down and left/right. The first activation of switch #1 starts the scan of the middle column. Press the switch again and the scan reverses. The first activation of switch #2 starts the scan across the rows. Push the switch again and the scan reverses. Press and hold the switch to start scan; tap the switch with a short hit to activate a location that is lit.
Dual Switch—The principle is exactly the same as above. The SELECT side of your switch scans left/right and the ON/OFF side scans up/down.
You can choose Auto or Hold with 2-switch scanning. COLUMN/ROW has no effect with 2-Switch Scan Mode 1.
NOTE: 2-switch scan mode 1 is not available in 8 or 4 location.
Setting up 2-Switch Scanning in the Selection Technique menu:
Activate the TOOLS button on the case to go to the Toolbox screen. Activate SELECTION TECHNIQUE MENU. Select 2-Switch in the Selection Technique box, and then select the Scan Mode 1 option.
2-Switch—Scan Mode 2 / also known as 2-Switch Step Scanning
Summary: Switch 1 starts scan. Switch 2 selects row or column. Switch 1 scans row or column. Switch 2 selects location. Plug two single switches into the SWITCH A and SWITCH B jacks. If you have a dual switch, plug it into either jack. With a PRC dual switch, the SELECT side of the switch is Switch 1 and the ON/OFF side of the switch is Switch 2. Select 2 Switch and Mode 2 in the SELECTION TECHNIQUE MENU.
Setting up the Selection Technique Menu for 2-Switch Step Scanning:
Activate the TOOLS button on the case to go to the Toolbox screen. Activate SELECTION TECHNIQUE MENU. Select 1-Switch in the Selection Technique box, and then select the Scan Mode 2 option.
To Scan:
Press Switch 1 to start the scan. The top row or first column is highlighted. To move the scan to the next row or column, hold Switch 1 down until the row or column you want is highlighted. You can also press and release the switch each time you want to move to a new row or column. When you reach the row or column you want, press Switch 2. Then press and hold Switch 1 to scan across or down, or press and release the switch until you reach the key you want. When you reach the location you want, press Switch 2. With this technique, Switch 1 always moves you somewhere and Switch 2 always chooses your selections.
Note: To lengthen the dwell time for step scanning, increase the Scanning Speed time to allow a longer time for decision making for the user.
NOTE: Stepping or pressing and holding the switch are the only scanning choices with Scan Mode 2. Automatic scan is not a choice.