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
