User's Manual

SIM900B EVB User Guide
SIM900B-EVB_UGD_V1.01 3 14.04.2010
Contents
Contents ............................................................................................................................................3
1. SIM900B EVB..............................................................................................................................5
2. EVB accessory ..............................................................................................................................7
3. Accessory Interface .......................................................................................................................8
3.1 Power Interface ...................................................................................................................8
3.2 Audio Interface....................................................................................................................9
3.3 SIM card interface.............................................................................................................10
3.4 Antenna Interface ..............................................................................................................11
3.5 RS232 Interface.................................................................................................................12
3.6 Operating Status LED .......................................................................................................13
4. Test Interface...............................................................................................................................13
4.1 Serial Interface ..................................................................................................................14
4.2 J2---KEY & CTRL............................................................................................................15
4.3 J3---LCD & I/O.................................................................................................................16
5. EVB and accessory equipment....................................................................................................17
6. Illustration:..................................................................................................................................18
6.1 Running:............................................................................................................................18
6.2 Connecting Net and calling...............................................................................................18
6.3 Downloading.....................................................................................................................18
6.4 Turns off............................................................................................................................18
Figure Index
FIGURE 1： EVB TOP VIEW ...............................................................................................................5
FIGURE 2： EVB BOTTOM VIEW......................................................................................................6
FIGURE 3： EVB ACCESSORY........................................................................................................... 7
FIGURE 4： POWER INTERFACE ......................................................................................................8
FIGURE 5： AUDIO INTERFACE ....................................................................................................... 9
FIGURE 6： SIM CARD INTERFACE...............................................................................................10
FIGURE 7： ANTENNA INTERFACE ............................................................................................... 11
FIGURE 8： SERIAL PORT AND DEBUG PORT .............................................................................12
FIGURE 9： STATUSLED...................................................................................................................13
FIGURE 10： TEST INTERFACE OVERVIEW.................................................................................13
FIGURE 11： J1 INTERFACE.............................................................................................................14
FIGURE 12： J2 INTERFACE.............................................................................................................15
FIGURE 13： J3 INTERFACE.............................................................................................................16
FIGURE 14： EVB AND ACCESSORY EQUIPMENT......................................................................17