4-30 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Theory of Operation: DSP Board
83 TELMAUDIO Output Telemetry Ultrasound Audio From Rear Panel
84 MECG 60DB Input MECG 60 dB Analog
85 AIN1 Input Spare MUX Input Channel 3
86 No Connection — —
87 No Connection — —
88 No Connection — —
89 No Connection — —
90 AGND Output Analog Ground
91 No Connection — Isolation Barrier Pins
92 No Connection — Isolation Barrier Pins
93 No Connection — Isolation Barrier Pins
94 No Connection — Isolation Barrier Pins
95 No Connection — Isolation Barrier Pins
96 No Connection — Isolation Barrier Pins
97 GNDI Output Ground Input for Isolated Power Supply
98 GNDI Output Ground Input for Isolated Power Supply
99 +20I Output +20 Volts Input for Isolated Power Supply
100 +20I Output +20 Volts Input for Isolated Power Supply
Table 4-13. Front End Connector J1 (Continued)
Pin Number Signal Name
Signal Type
(Relative to Main
Motherboard
Signal Description
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