SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision Document Title: SIM800L-EVB_User Guide Version: 1.00 Date: 2013-07-22 Status: Release Document Control ID: SIM800L-EVB_User Guide_V1.00 General Notes Simcom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by Simcom. The information provided is based upon requirements specifically provided to Simcom by the customers.
Smart Machine Smart Decision Contents Contents ............................................................................................................................................ 3 Version History ................................................................................................................................. 4 1. SIM800L EVB .............................................................................................................................. 5 2. EVB Accessory ............
Smart Machine Smart Decision Version History Data Version Description of change Author 2013-07-22 1.00 Origin Lee SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision 1. SIM800L EVB A K L B J C M A D N E I H F G O P Figure 1: EVB TOP view SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision Q R Figure 2: EVB BOTTOM view A. B. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q. R.
Smart Machine Smart Decision 2. EVB Accessory Figure 3: EVB accessory A: GSM antenna Model GSM antenna: WT-C&G-28-90 Frequency Range (MHz) 824 ~ 960 1710 ~ 1990 VSWR ≤1.5 (900MHz) ≤2 (1800MHz) Gain: 3dBi Input Impedance (Ω): 50 Polarization Type: Vertical Connector Type: SMA B: Antenna transmit line C: 5V DC source adapter D: Serial port line NOTE: The maximum gain of the GSM antenna gain should not exceed 3dBi for end-users. SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision 3. Accessory Interface 3.1 Power Interface Figure 4: Power Interface Pin Signal I/O 1 Adapter input I Description 5V/2.5A DC source input 3.2 Audio Interface Figure 5: Audio Interface Headset interface: Pin Signal I/O 1 MIC1P I Positive microphone input 2 SPK1P O Positive receiver output 3 MIC1N I Negative microphone input SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision 4 SPK1N O Negative receiver output 3.3 SIM card interface Figure 6: SIM card interface 3.4 RS232 Interface Figure 7: Serial Ports Serial Port 1——MAIN Interface Serial Port 2——DEGUG Interface Main Interface: Pin Signal I/O Description 1 DCD O Data carrier detection SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision 2 TXD O Transmit data 3 RXD I Receive data 4 DTR I Data Terminal Ready 5 GND 7 RTS I Request to Send 8 CTS O Clear to Send 9 RI O Ring Indicator Pin Signal I/O Description 2 DEBUG_TX O Transmit data 3 DEBUG_RX I Receive data 5 GND GND Debug Interface: SIM800L-EVB_User Guide_V1.
Smart Machine Smart Decision 4. Illustration: 4.1 Running: (1) Inserting 5V direct current source adapter, switching the S101,S102 switch on off state, S105 switch on ON state; (2) Press the PWRKEY for about 1 second, and then SIM800L module begins running. You can see the light Q3 on the EVB flashing at a certain frequency. By the state, you can judge whether the EVB and SIM800L can run or not. No function and test can be executed when we have not connected necessary accessories. 4.
Smart Machine Smart Decision Contact us: Shanghai SIMCom Wireless Solutions Ltd. Add: SIM Technology Building，No.633，Jinzhong Road，Changning District， Shanghai P.R. China 200335 Tel: +86 21 3235 3300 Fax: +86 21 3235 3301 URL: www.sim.com/wm SIM800L-EVB_User Guide_V1.
