Datex-Ohmeda S/5 Anesthesia and Critical Care Monitors
6
Document no. M1125636-05
2.3 Central Processor Unit, F-CPU
The Central Processor unit contains a CPU mother board and its own DC power board. The
basic configuration contains also an UPI4NET board, B-UPI4NET and a CPU board, B-CPU6
board. Additionally, there is a PC board slot for an optional display controller board, B-DISPX
(max. 1 pcs). The CPU mother board connects the boards together. It also contains an internal
battery for restoring the patient data for 15 min after shut down.
Figure 6 Central Processor Unit, F-CPU
2.3.1 DC Power board
The DC power board of the F-CPU converts the +32Vdc to voltages needed by the CPU, display
controller and upinet boards and the battery. The created voltages are +15V, -15V, +5V and
+5Vcpu. Also the +32Vdc is routed to the Central Processor electronics.
* The maximum output current for +5V and +5Vcpu together is 4A.
Output +18...32V +15Vd +5V +5VCPU -15V
Tolerance +18...32V +/-0.5V +/-0.1 +/-0.1V +/-0.5V
Max. current 0.5A 1.1A 2.5A* 4A*
standby load
0.6A
0.02A
1 2
3 4
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