EDAN FTS-3 - Power Module

FTS-3 Fetal Telemetry System Service Manual Principle Introduction
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Charge interface board ports to indicative light board
Figure 7- 6
7.1.4 Power module
Power module outputs ＋12V and ＋5V and is responsible for charging management.
When the system is supplied by 90-264VAC power, power module transfers AC mains into 12V
DC and 5V DC power. When the system is cut off from the 90-264VAC powe, the power
modules transfer the battery power inside into 12V DC and 5V DC power.
Pin No.
Symbol
1,2,3,4
VCC
5,6,7,8
GND
9,10
TRANS1_TX
11,12
TRANS1_RX
13,14
TRANS2_TX
15,16
TRANS2_RX
17,18
TRANS3_TX
19,20
TRANS3_RX
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