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FTS-3 Fetal Telemetry System Service Manual
Principle Introduction
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EMI
Circuit
Rectifier
Filter
PWM Control
IC
:
NCP1337
AC
Input
19V
DC
Opticalcoupler
feedback
LDO
5V
5V
DC
12V
DC
MCU
OUTPUT
Charging
Management
14.8V
Battery
Figure 7- 7 Power Module Principle Block Diagram
7.2 Interface and Key
At the back of the base station, there is an interface and two keys.
DB15 interface
Working channel key
–
and
+
7.2.1 DB15 Interface
All the base stations are provided with DB15 interfaces. You can connect FTS-3 to F6/F9 series
fetal/maternal monitor via DB15 interface.
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EDAN CONFIDENTIAL