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USB port connections
Touch screen panels can be connected via the two rear panel USB ports. By
connecting multiple USB hubs (see figure 4-2), up to 20 devices can be connected
For a full list of compatible panels visit
A number of common touchpanels are automatically supported. A mix of size and
vendor type can be connected simultaneously, but unsupported devices may cause
adverse affects.
The USB ports also support standard USB keyboards and mice.
Before use, panel calibration is advised (see "Touchscreen calibration" below).
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. Do not connect more than
three hubs in line (i.e. three deep).
1 2 3 4
Figure 4-2 — Connect USB hubs for multiple devices
Touchscreen calibration
If a touchscreen is attached to the Annotator, the touch accuracy should be
calibrated using the Calibrate Panels setting in the Advanced configuration menu.
Both RS-232 and USB connected touchscreens require calibration.
To calibrate a connected and powered-on panel, do the following:
1.
Press the Menu button on the front panel of the Annotator repeatedly until
reaching the Advanced Configuration menu.
2.
Within the Advanced configuration menu press Next repeatedly to cycle to
"Calibrate Panels Press Size".
3.
Press Size and observe the touchpanel screen. A cross appears in the upper
left corner.
4.
Tap the screen at the cross, which then moves to the top right corner.
5.
Tap the second cross. This moves to the bottom right corner.
6.
Tap the third cross. This moves to the bottom left corner.
7.
Tap the fourth cross. The unit saves the calibration data and restarts the
sequence.
8.
Repeat the process for each connected touchscreen.
9.
Press any Annotator front panel button to exit the sequence and save the data.
Figure 4-3 — Sequence of crosses for setting touch accuracy
Annotator
USB #1
1 2 3 4
Hubs
1 2 3 4
1 2 3 4
1 2 3 4
1
2
4
3
Annotator • On Screen Annotation
www.extron.com.
4-3
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