Manual Do Utilizadoríndice analíticoINTRODUCTION51.1 Models Description51.2 Summary51.3 Product Specifications6TECHNICAL OVERVIEW72.1 Block Diagramm of GSM Module72.2 Supported Interfaces7HARDWARE INTERFACE83.1 Interface Signals83.2 Signal Description83.4 Antenna Interface (RF)15RF Connector:15Antenna Performance Recommendations16Antenna Installation16User Operation163.5 Internal SIM Card Interface17SIM Card reader pins supported:173.6 SIM Card Mechanical Drawings183.7 External SIM Card Interface (-ES Option)19External SIM Card reader pins supported:19SIM socket pin description:19SIM Card Reader Integration:20Layout Restrictions:203.8 Audio - Interface21Speaker-Circuit21Microphone circuit22Audio Circuit Design Considerations223.9 Reset Signal (ON/OFF Signal)23Software Reset23CONNECTORS AND PERIPHERAL REFERENCE24RF CONNECTOR24Microphone24Speaker24Antenna Cable24GSM antenna24DESIGN GUIDELINES255.1 Electromagnetic Interference (EMI) Considerations25Grounding26Power Supply 5V (5V Models)26Power Supply 3.3V (3V Models)27Preferred Regulators27RF Antenna285.2 Manufacturing Considerations28MODULE DIMENSIONS29REGULATORY APPROVALS307.1 Considerations for Regulatory Approvals30Regulatory Requirements30Regulatory Statement307.2 Safety Precautions31User Operation31Antenna Installation31Antenna care and replacement31Electronic devices31APPENDIX A32REFERENCE DOCUMENTS32Table 3-1. Serial TTL Signals9Table 3-2. Signal Descriptions10Table 3-3. Signal Descriptions (Cont'd)11Table 3-3. Signal Descriptions (Cont'd)12Table 3-4. Analog Electrical Characteristics12Table 3-5. Digital Electrical Characteristics13Table 3-6. Absolute Maximum Ratings14Table 3.7 Antenna Performance Recommendations16Table 3.8. Headset Speaker Output at Maximum Volume Level21FIGURE 2-1. INTERFACE BLOCK DIAGRAM7FIGURE 3-1. SERIAL PINOUT9FIGURE 3-5. SIM CARD READER17FIGURE 6-2. MECHANICAL DRAWINGS29Tamanho: 300 KBPáginas: 32Language: EnglishAbrir o manual