GE Medical Systems
EAGLE 1000
Page 30
Information Technologies
Servicing Instructions 227 468 01 Rev.G
Name
Connection
Denotation
Page P-Plan Subtitle
AA
Conductor Foil
Display
9
Display
AB
For Optrex LCD only
9
Display
AC
Cable
Battery
6
Power
AD
Cable
PCB Power Supply
6
Power
AE
Cable
LCD Backlight
9
Display
AF
Flat cable
Recorder
8
Interface_Out
AG
Flat cable
PCB Non-Invasive Blood
5
Interface_In
Pressure
AH
Flat cable
PCB Oximeter (Sp02)
5
Interface_In
AI
Debugging Connector only
7
Control
AJ
Stackable Connector PCB Press/Temp
5
Interface_In
AK
Flat cable
ECG Input
2
ECG_Input
AM
Conductor Foil
Membrane Keypad
5
Interface_In
AN
Flat cable
RS 232 External Port
8
Interface_Out
AO
Flat cable
Nurse Call Adapter
8
Interface_Out
2.2.3 System power supply
see diagram System Power Supply
The power supply is in protection class I with a protective ground terminal. A primary-
regulated wide-range power supply unit, delivering 15.5 V DC, precludes the necessity of a
power toggle switch. This unit also acts as a charger for the 12-V system battery. All con-
trol functions are regulated on the PCB ECG Monitor. A charge controller measures the
battery current across a resistance referred to zero, activates the front panel charge indi-
cator and communicates with the processor. Should the output voltage of the power unit
fail to reach 15.5 V, the battery will not be charged to full capacity.
The battery meets the temporary high current demand of the recorder and the PCB Non-
Invasive Blood Pressure as well as current peaks and is also essential for retaining data.
As the battery continuously is discharged, this is indicated by an 11.5V comparator, which
triggers the warning display Battery blinking and the audible alarm signal sounding.
When the charge drops below 10 V after storing the data the 10V comparator switches off
the system to protect the battery.
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