SIM508 EVB User Guide
SIMCOM
Contents
Contents ............................................................................................................................................2
Version History .................................................................................................................................4
1. SIM508 EVB overview.................................................................................................................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
3.4.1 GSM antenna interface...........................................................................................11
3.4.2 GPS antenna interface ............................................................................................12
3.5 RS232 interface.................................................................................................................13
3.5.1 GSM part:...............................................................................................................13
3.5.2 GPS part .................................................................................................................14
3.6 Operating status LED........................................................................................................15
3.6.1 GSM part:...............................................................................................................15
3.6.2 GPS part .................................................................................................................16
4. Test interface ...............................................................................................................................16
4.1 GSM serial ports ...............................................................................................................17
4.2 Keypad ..............................................................................................................................18
4.3 LCD & ADC .....................................................................................................................19
4.4 GPS control & I/O.............................................................................................................20
4.5 GPS serial ports and power ...............................................................................................21
5. EVB and accessory equipment....................................................................................................22
6. Illustration:..................................................................................................................................22
6.1 GSM part...........................................................................................................................22
6.1.1 Running:.................................................................................................................22
6.1.2 Connecting Net and calling....................................................................................23
6.1.3 Downloading..........................................................................................................23
6.1.4 Turn off...................................................................................................................23
6.1.5 Charging.................................................................................................................23
6.2 GPS part ............................................................................................................................23
6.1.1 Running:.................................................................................................................23
6.1.2 Tracking the satellite signals ..................................................................................24
6.1.3 Downloading..........................................................................................................24
6.1.4 Turn off and Reset ..................................................................................................24
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