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USB Port Connections
Touchpanels can be connected via the two rear panel USB ports. By connecting multiple
USB hubs (see figure 20), up to 20 devices can be connected.
A number of common touchpanels are automatically supported. A mix of size and vendor
types can be connected simultaneously, but unsupported devices may cause adverse
affects. For a full list of compatible panels visit www.extron.com.
The USB ports also support standard USB keyboards and mice.
Before use, panel calibration is advised (see “Touchscreen Calibration” in this section).
Using a suitable USB A cable, connect a touchscreen device or hubs to the either of the
two USB A ports on the rear panel of the Annotator 300. Do not connect more than three
hubs in line (three deep).
NOTE: The Annotator 300 has one hub built into the product.
1 2 3 4
Annotator 300
USB #1
Hubs
1 2 3 4
1 2 3 4 1 2 3 4
1 2 3 4
Figure 16. Connect USB Hubs for Multiple Devices
Touchscreen Calibration
If a touchpanel screen is attached to the Annotator 300, the touch accuracy can be
calibrated using the Calibrate Panels setting in the Advanced configuration menu.
1. Within the Advanced Configuration menu, select Yes and press Next to cycle to
Calibrate Panels.
Observe all connected touchpanel screens. On all screens a green box appears at
top center. To start the sequence, tap the box on one of the panel screens you need
to calibrate.
1
4
3
2
5
Touch to Start
Figure 17. Sequence of Cross Positions for Setting the Touch Accuracy of a
Screen
2. The box disappears and a crosshatch + appears in the upper left corner. Tap the
screen at the crosshatch.
3. The crosshatch re-appears at the top right corner. Tap the crosshatch. The
crosshatch re-appears in the lower right.
Annotator 300 • On Screen Annotation 26