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5.1 Block diagram
Voltage
control
(power-fail)
5MHz
CAN
address
selector
DB9 CAN
DB9 RS232
Control
µController
Unit
Core
C166
CAN
Controller
Port 2
SIM
Card
FLASH
RAM
Serial
Controller
Port 1
Serial Switch
Serial AT protocol
GSM Modem
AT
GSM/GPRS
Modem AT
SMA Antenna
connector
Air Contact Hardware Manual
Service Time
selector
1 push
button
3 status
LEDs
4 digital
inputs
Rechargeable
Battery
Power
supply
11
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