SIM300 User Manual
Document Name: SIM300 User Guide Version: Date: DocId: Status: 1.00 2006-6-18 SIM300 User Guide_V1.00 Release General Notes Simcom offers this information as a service to its customers, to support application and engineering efforts that use Simcom products. The information provided is based upon requirements specifically provided to Simcom by the customers.
Contents 1 SIM300 EVB and accessories................................................................................................4 1.1SIM300 EVB................................................................................................................4 1.2 accessories...................................................................................................................5 2 EVB and accessory equipment.........................................................................................
1 SIM300 EVB and accessories 1.
D: E: F: G: H: I: J: K: L: M: N: O: Download switch, turn on or off download function VBAT switch, switch the voltage source from the adaptor or external battery PWRKEY key, turn on or turn off SIM300 buzzer expand port, such as keypad port, main and debug serial port, display port MAIN serial port for downloading, AT command transmitting, data exchanging DEBUG serial port hole for fixing the antenna source adapter interface light hole for fixing the SIM300 headphones interface 1.
Figure 3： EVB and accessory equipment 3 Operation Firstly，please equip the module and accessories as the figure 3： 3.1 Tune up procedure 1）switching the S1 switch to off state, S2 switch to ON state； 2) Press the PWRKEY button for about 1 second, then the LED glint，and the module is tuning up successfully； 3.
Step 2：Parameter setting（set the PC serial port and band rate）
Step 3：power on the module and key in the AT command： 1） power on the module； 2） key in the “AT” and enter，if the “OK” is feedback，it indicates that the module connecting
to the PC is successful； 3） Key in the “AT+CSQ” and enter，if the feedback is as below，it indicates that the module connecting to the NET is successful； 4） Key in the “ATD112；” and enter to set a phone call，and key in “ATH” to hang up the call；
3.
6 FCC RF exposure requirements To allow compliance with the FCC RF exposure requirements, the SIM300’s maximum output power is 33dBm in GSM900 band and 30dBm in DCS1800/PCS1900 band，and the maximum antenna gain is 3dBi and the minimum cable loss is 0.
