GE Corometrics 126

Revision B 120 Series Maternal/Fetal Monitor 4-5
2015590-001
Theory of Operation: Main Motherboard
Table 4-1. Main Power Connector
Pin Number Signal Name Signal Description
1 AGND Analog Ground
2 GND Digital Ground
3 GND Digital Ground
4 GND Digital Ground
5 +5V +5V Logic Supply
6 +5V +5V Logic Supply
7 +5V +5V Logic Supply
8 GNDAUD Audio Ground for +12 V
9 GNDBP NBP and Isolated Supply Ground
10 +15BP Supply for NBP
11 +12AUD Supply for Audio
12 +12EL Supply for EL panel
13 GNDEL Ground for EL panel
14 +20I 20 V for Isolated Power Supply
15 GNDI Ground for Isolated Power Supplies
16 +15US +15 V for Ultrasound
17 –15V –15 V for Ultrasound
18 72KHZ Power Supply Sync Frequency from US Board