IBM 4820, System Reference Manual

Page: 39 / 124

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.
Magnetic stripe reader (model 42T)
The supported MSRs available are the International Organization for Standardization
(ISO) 3- track and the Japanese Unified Cash Card (JUCC) 2-head.
Note: Model 4820-42T does not support JUCC.
Pointing device (models 42D, 42T)
You can connect an IBM PS/2 compatible pointing device to the 6–pin mini DIN
connector plug.
External keyboard (models 42T and 4FT)
The 4820 SurePoint Solution models 42T and 4FT support one PS/2 compatible
keyboard for maintenance purposes. The following conditions apply:
Scan codes
See Figure 4-1 on page 4-3,
Host PC dependency
Host pc must support keyboard hot plugging
Figure 2-1. Power Management Transition Diagram
Chapter 2. System specifications and planning information
2-3