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Operational Modes 4-19
Digitizer Calibration
Calibration of the digitizer is done at the factory and should never
require readjustment. If you experience a digitizer tracking problem,
contact an NCR service representative prior to attempting any
adjustments.
Screen Contrast Adjustment
When you enter this mode, the screen displays a light and dark
checkerboard pattern. To lighten the screen, drag the stylus from the
left to the right. To darken the screen, drag the stylus from the right to
the left.
Note: It is possible to adjust the screen contrast so that the menu
options are not visible. It is then very difficult to select the option to
adjust it properly. If this occurs, momentarily unplug the power
module from the electrical power outlet and then reconnect it to initiate
the self-test diagnostics. Then, hold the stylus tip on the screen for four
seconds to establish a default contrast value.
EIA-485 Link Address
If your 5992 utilizes an EIA-485 interface with an IBM-468x host, you
must set the link address at installation. If your 5992 utilizes and EIA-
485 2-wire multidrop link interface, you must set the link at
installation.
EIA-232
If not manually set, the RS-232 communication baud rate will
automatically be set via the first communications message following
the unit power cycle. The highest rate that can be detected in autobaud
mode is 19.2Kbps. If 38.4Kbps is required, it must be set by selecting
the 38.4Kbps option from the menu.