IBM 4820, System Reference Manual

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Suspend/Resume switch
This switch toggles the power management state.
Touchscreen/Keypad sleep timer
This timer is activated when the time set elapses after the last keypad or touch
panel access.
Touchscreen/Keypad touch
The wake signal is activated by touching the touchscreen or keypad when in
standby operation mode.
DPMS DPMS controls the power management state according to the sync status.
Managing the screen savers
To ensure that your operating system screen saver works with the screen saver of the
4820 SurePoint Solution, IBM recommends the following changes:
Note: These change will ensure that PosNtouchScreenSaverTime operates properly.
The control panel of your operating system contains the following programs that affect
the screen saver function:
Display
An icon that resides in Control Panel represent display. Ensure that the screen
saver of the Display is set to None .
Power management (if applicable)
An icon that resides in Control Panel represent power management. Ensure
that the Turn Off Monitor timer is set to Never .
Optional features
This section describes the optional features available on the 4820 SurePoint Solution.
Keypads
An optional 32-key keypad is available with either an ISO 3 track MSR or JUCC MSR.
Manager’s keylock
As an option, the 4820 SurePoint Solution allows for a two-position manager’s keylock.
Magnetic stripe reader (MSR)
The two MSRs available are the International Organization for Standardization (ISO) 3-
track and the Japanese Unified Cash Card (JUCC) 2-head.
Audio kit
The audio kit option is available for all models of the 4820 SurePoint Solution. This kit
provides an integrated microphone, and stereo speakers molded into a single unit. This
unit replaces the mounting cover.
Chapter 9. System specifications and planning information
9-3