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GE Corometrics 126

GE Corometrics 126
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Revision B 120 Series Maternal/Fetal Monitor 4-1
2015590-001
Chapter 4
Theory of Operation 4
This section of the manual contains the electronic theory of operation for the 120
Series Monitor. For parts information, refer to “Chapter 14, Replacement Parts”.
This chapter contains the following information:
Main Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
DSP Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
NBP Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
Communications Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
System Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44
Display Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
Dual Ultrasound Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
UA/FECG Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
MECG Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
Oximeter Carrier Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
MSpO2 Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-71
Isolated Power Supply Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
Recorder Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82

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