SimCom T900 - Default Chapter; Table of Contents; Contents

Smart Machine Smart Decision
T900_User Guide_V1.02 3 2013-05-22
Contents
Contents.................................................................................................................................................................... 3
Version History........................................................................................................................................................ 6
1 Introduction....................................................................................................................................................... 7
2 Key features....................................................................................................................................................... 7
3 Terminal dimensions ........................................................................................................................................ 9
4 Installation....................................................................................................................................................... 10
5 Interface introduction......................................................................................................................................11
5.1 Overview .................................................................................................................................................11
5.2 T900 Functional Diagram....................................................................................................................... 12
5.3 Accessory information............................................................................................................................ 13
6 Application Interface...................................................................................................................................... 13
6.1 Power Supply.......................................................................................................................................... 13
6.2 Serial Interface........................................................................................................................................ 15
6.3 10 PIN I/O interface ............................................................................................................................... 16
6.3.1 Audio interface.................................................................................................................................... 17
6.3.2 ADC channel....................................................................................................................................... 20
6.3.3 GPIO interfaces................................................................................................................................... 21
6.4 Antenna interface.................................................................................................................................... 21
6.4.1 Antenna connector .............................................................................................................................. 21
6.4.2 Antenna specifications ........................................................................................................................ 22
6.4.3 Antenna placement.............................................................................................................................. 22
6.5 LED indicator ......................................................................................................................................... 23
6.6 SIM Card Interface ................................................................................................................................. 23
7 Electrical, Reliability and Radio Characteristics......................................................................................... 25
7.1 Absolute Maximum Ratings................................................................................................................... 25
7.2 Recommended Operating Conditions..................................................................................................... 25
7.3 Electro-Static Discharge ......................................................................................................................... 25
7.4 Operating frequency ............................................................................................................................... 26
7.5 Transmitter output power and receiver sensitivity ................................................................................. 26
8 Software/ Firmware Upgrade ........................................................................................................................ 26
8.1 Tool introduction.................................................................................................................................... 26
8.2 Illustration of software updating............................................................................................................. 26
Appendix ................................................................................................................................................................ 32
A. Related Documents.......................................................................................................................................... 32
B. Terms and Abbreviations ................................................................................................................................. 32
C. Safety Caution ................................................................................................................................................. 34