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UserGuide for Cisco Digital Media Manager5.4.x
OL-15762-05
Chapter15 Touchscreens, Projec tors, and Displays
Reference
FAQs About Daily Operation
•
How long does display autodetection take?
•
Why might display autodetection fail?
Q.
How long does display autodetection take?
A.
Autodetection takes less than 8 seconds in most cases and less than 2 seconds in some cases.
Q.
Why might display autodetection fail?
A.
The display autodetection feature fails unless you use an HDMI signal cable (with or without a DVI
adapter) to connect a presentation system to your DMP.
FAQs About RS-232
•
Why does my DMP 4400G run very slowly while its RS-232 features are enabled?
Q.
Why does my DMP4400G run very slowly while its RS-232 features are enabled?
A.
The likeliest explanation is that your signal cable is faulty. Try substituting the equivalent cable from
a DMP that operates as expected when RS-232 features are enabled. If doing this has no effect,
restore your DMP to its factory-default settings and then configure it once more to support RS-232.
FAQs About Touchscreens
•
What should I do when a message states that my touchscreen must download a characterization file?
•
When is it necessary to repeat the calibration of a touchscreen?
•
What can cause a properly calibrated touchscreen to operate as if it is not calibrated?
Q.
What should I do when a message states that my touchscreen must download a characterization file?
A.
Do not disturb or interrupt the automated process. It occurs only once, and takes approximately
10 minutes to finish. When it is finished, your touchscreen will clear the message automatically.
Q.
When is it necessary to repeat the calibration of a touchscreen?
A.
You must repeat this calibration whenever you:
•
Rotate a touchscreen or change its resolution.
•
Replace a touchscreen.
Q.
What can cause a properly calibrated touchscreen to operate as if it is not calibrated?
A.
If this happens to you, unplug the serial cable (or USB cable) that connects this touchscreen to
your DMP. Then, plug that cable back in again.