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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO&GENER reserves the right to make any modifications.
7 FUNCTIONAL DESCRIPTION......................................................................................................................33
7.1 ARCHITECTURE ............................................................................................................................................ 33
7.2 POWER SUPPLY ........................................................................................................................................... 34
7.2.1 General .......................................................................................................................................... 34
7.2.2 Optional internal battery................................................................................................................. 34
7.2.2.1 Presentation............................................................................................................................ 34
7.2.2.2 Example of autonomy with the optional internal battery......................................................... 34
7.2.2.3 Specifications ......................................................................................................................... 35
7.2.2.4 Charge voltage and supply voltage ........................................................................................ 35
7.2.2.5 Indication of the presence/absence of the external supply .................................................... 36
7.2.2.6 Operating guidelines and restrictions ..................................................................................... 36
7.2.3 Supply protections ......................................................................................................................... 36
7.3 RS232 SERIAL LINK...................................................................................................................................... 37
7.3.1 General .......................................................................................................................................... 37
7.3.2 Auto-baud mode ............................................................................................................................ 38
7.3.3 Pins description.............................................................................................................................. 38
7.4 GENERAL PURPOSE INPUTS /OUTPUT........................................................................................................... 39
7.5 BOOT......................................................................................................................................................... 40
7.6 RESET ....................................................................................................................................................... 40
7.6.1 General .......................................................................................................................................... 40
7.6.2 Reset sequence ............................................................................................................................. 40
7.7 WATCHDOG................................................................................................................................................. 41
7.8 AUDIO ......................................................................................................................................................... 41
7.8.1 Microphone .................................................................................................................................... 41
7.8.2 Loud-speaker ................................................................................................................................. 42
7.8.3 Buzzer Output ................................................................................................................................ 42
7.9 SPI INTERFACE ............................................................................................................................................ 44
7.10 DIRECT GPS INTERFACE ............................................................................................................................ 44
7.11 GPS MODULE............................................................................................................................................ 44
8 TECHNICAL CHARACTERISTICS ...............................................................................................................45
8.1 MECHANICAL................................................................................................................................................ 45
8.2 ELECTRICAL................................................................................................................................................. 46
8.2.1 Power supply ................................................................................................................................. 46
8.2.2 Audio interface ............................................................................................................................... 47
8.2.2.2 Buzzer..................................................................................................................................... 48
8.2.3 General purpose inputs / output .................................................................................................... 49
8.2.3.1 Inputs ...................................................................................................................................... 49
8.2.3.2 Output ..................................................................................................................................... 49
8.2.4 SIM interface.................................................................................................................................. 50
8.2.5 RESET signal................................................................................................................................. 50
8.2.6 GSM / DCS .................................................................................................................................... 50
8.2.6.1 Frequency bands.................................................................................................................... 50
8.2.6.2 RF Performances ................................................................................................................... 51
8.2.6.3 External GSM antenna ........................................................................................................... 51
8.2.7 GPS................................................................................................................................................ 52
8.2.7.1 GPS operation ........................................................................................................................ 52
8.2.7.2 External GPS antenna............................................................................................................ 52
8.2.7.3 Installation of the external GPS antenna................................................................................53
8.3 ENVIRONMENTAL CHARACTERISTICS.............................................................................................................. 54
8.4 STANDARDS /CONFORMITIES ....................................................................................................................... 55
8.5 PROTECTIONS.............................................................................................................................................. 55
8.5.1 Power supply ................................................................................................................................. 55
8.5.2 Over-voltage .................................................................................................................................. 55
8.5.3 ESD................................................................................................................................................ 56
8.5.4 Miscellaneous ................................................................................................................................ 56
