IBM 4820, System Reference Manual

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Transition diagram
The diagram below shows the transition between standby and normal operation.
Normal
Standby DC-off
Switch-off
DPMS on
Switch (toggle)*
Switch (toggle)
*No Video/DPMS by OSD
DC-out
DC-out
DC-out
DC-in
*DC-in
DPMS off
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 allow 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.
Note: The audio kit requires a sound card with amplified output (speaker out). Sound
cards with these characteristics are Sound Blaster sound card PCI128 or
Yamaha sound card WF192XG.
Figure 5-1. Power Management Transition Diagram
Chapter 5. System specifications and planning information
5-3