MTX -3G-JAVA series User Manual page 5

3. Electrical and environmental characteristics ................................................................................ 35
3.1 Electrical specifications ......................................................................................................... 35
3.1.1 Power supply ................................................................................................................. 35
3.1.2 RS232 interface ............................................................................................................. 35
3.1.3 RS485 interface ............................................................................................................. 36
3.1.4 I2C interface .................................................................................................................. 36
3.1.5 GPIO . .............................................................................................................................. 37
3.1.6 Optoisolated Input/Output ........................................................................................... 37
3.1.7 Analog Input/Output ..................................................................................................... 38
3.2 Operating temperatures........................................................................................................ 39
3.3 Storage conditions . ................................................................................................................ 40
4. Interface description ..................................................................................................................... 41
4.1 Power supply connector . ....................................................................................................... 42
4.1.1 RJ11 (base MTX-3G-JAVA) ............................................................................................. 42
4.1.2 5 way plug-in terminal block (RS485 models) ............................................................... 43
4.1.3 RJ11 (ULP models) ......................................................................................................... 44
4.1.4 RJ11 (all other models) . ................................................................................................. 45
4.2 Mini USB connector . .............................................................................................................. 46
4.3 DB9 connector: main RS232 port .......................................................................................... 47
4.4 DB15 connector: I/O expansion port..................................................................................... 49
4.4.1 Connector pinouts . ........................................................................................................ 49
4.4.2 RS232 interface ............................................................................................................. 54
4.4.3 I2C bus ........................................................................................................................... 56
4.4.4 Analog-to-Digital and Digital-to-Analog converters ...................................................... 57
4.4.5 General Purpose and Optoisolated I/O ......................................................................... 59
4.5 RS485 bus .............................................................................................................................. 62
4.6 GSM/GPRS/UMTS antenna connector .................................................................................. 63
4.7 SIM card reader ..................................................................................................................... 63
4.8 3-Axis accelerometer . ............................................................................................................ 64
4.9 Internal Li-Po battery . ............................................................................................................ 65
4.10 Real Time Clock ..................................................................................................................... 68
4.10.1 ULP models . ................................................................................................................... 68
4.11 Internal Hardware Watchdog . ............................................................................................... 69
4.12 GPS ........................................................................................................................................ 70
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MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX-3G-JAVA Family
2015/10 v1.6
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