4-30 Chapter 4: 7401-4xxx Hardware Installation
If cursor is not stable, or false touches are suspected, run the Noise
Check Utility from the Microcal program. Ch o ose t h e recomm ended
frequency (the one with the lowest noise level). Th is sh ould also be
done if the Touch Screen is still not calibrated after one att e mp t to
recalibrate it.
5. Set the video resolution by going to the Tools menu, Video and
selecting 800 x 600 256 colors.
6. Go to the Tools menu, select Noise Check.
7. Follow the instruction prompts. Ch oos e the fre que n cy wit h the
lowest noise level.
Application software can possibly genera t e a dialo g box fro m th e
Touch Driver, with the message that the touch screen needs to be
recalibrated. If the screen appears to be working normally, then this
message can be ignored. There will be a check box la be led Do not
show this message again. Make sure this box is checked.
Calibration from the BIOS1. Apply power to the terminal.
2. When the screen prompt that says Touch the screen two times to enter
Setup appears, wait for the second prompt to touch the screen, and
then touch the screen three times. This causes the system to bypass
the BIOS Setup and go directly to the Touch Screen Calibration
Setup.
3. As instructed on the screen, touch the circle near the lower-left
corner of the screen. For best results, press the screen near the circle
and then slide your finger onto the circle without raising your
finger from the screen.
4. Using the sa me method as ab ove, touch th e circle nea r the upper-
right corner of the screen.
You should receive a Successful Calibration message and then th e
PhoenixBIOS Setup Utility should come up.