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F9 Fetal & maternal Monitor Service Manual Principle Introduction

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(5) Interface connects to main control board

Pin No. Symbol Pin No. Symbol Pin No. Symbol

1 VCC 15 ENERGY2 29 MB_RXD3

2 GND/BAT_V 16 ENERGY1 30 MB_TXD3

3 VCC 17 MB_RXD0 31 MB_RXD7

4 GND 18 MB_TXD0 32 MB_TXD7

5 +12V 19 MB_RTS 33 USB_DATA-

6 GND 20 GND 34 USB_DATA+

7 SOFT_CLOSE 21 BUSY 35 MB_RXD4

8 CLOSE_ASK 22 PE 36 MB_TXD4

9 BAT_ON 23 GND 37 MB_RXD5

10 CHARGE 24 CALL_CTRL 38 MB_TXD5

11 AC_ON 25 MB_RXD2 39 MB_RXD8

12 GND 26 MB_TXD2 40 MB_TXD8

13 ENERGY4 27 MB_RXD1

14 ENERGY3 28 MB_TXD1

(6) Interface connects to DECG module

Pin No. Symbol

1 MB_RXD3

2 MB_TXD3

3 GND

4 +12V

5 VCC

EDAN F9 Service Manual

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