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GSM Modem Rev 1r0 - BenQ M23 GSM MODEM Technical Manual Rev...

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GSM Modem ©2009 e-Gizmo Mechatronix Central Page 1 of 9 pages BenQ M23 GSM MODEM Technical Manual Rev. 1r0 Thinking of building a wireless gadget you can monitor and control remotely anywhere you are on earth? This kit could be just right for you. e-Gizmo GSM Modem is a data oriented GSM trans- ceiver system that uses a network provider to con- nect and transfer data. Using a network provider infrastructure has several advantages. Among them is a low initial cost (you don’t need to setup an expen- sive transceiver rig to cover a long distance), reliable, easy to use, and has wide coverage. You can use both data and voice services for your control applications. Example of data application is a remote appliance control via SMS. Data transfer via internet is even possible with BenQ M23 GPRS module installed. e-Gizmo GSM modem is built using the industry proven benQ M23 gsm module. Following is a short list of come of its features: BenQ M23A GSM module for SMS+Voice BenQ M23 GSM/GPRS module for SMS+Voice+Internet Switch selectable RS-232 or 3.3V TTL level se- rial port. On board 3.3V LDO regulator On board SIM card holder EZKonnek compatible port • 5V 1.5A switch mode power supply adapter is supplied as standard accessory.
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GSM Modem ©2009 e-Gizmo Mechatronix Central Page 2 of 9 pages 5V 1.5A Power In - + GSM Module I/O Connector GSM Module DB-9 RS-232 Connector SIM CARD Holder POWER ON Push Switch JP6 1-TTL TXD 2-TTL RXD 3-PWON 4-THRU 5-GND Jp5 6-VDD 5-TTL TXD 4-TTL RXD 3-PWON 2-THRU 1-GND SW2 PWON OPTION Remove jumper to disable PWON pin on Jp5 and JP6 SW3 VDD OPTION Remove jumper to disconnect VDD pin 6 from Jp5 SW1 TTL-RS232 OPTION 232 TTL 232 TTL RS-232 Enabled COMM via DB-9 RS-232 port TTL Enabled COMM via Jp5 or Jp6 TTL port DEFAULT Table 2. JP5 connector Pin No: ID Description 1 GND Circuit Ground 2 THRU Thru connection to JP6 pin 4 3 PWON Power ON momentary, active high 4 TTL RXD Receive Data, 3.3 V LVTTL 5 TTL TXD Transmit Data, 3.3V LVTTL 6 VDD +3.3V Out (if SW3 jumper installed) Table 3. JP6 connector Pin No: ID Description 1 TTL TXD Transmit Data, 3.3V LVTTL 2 TTL RXD Receive Data, 3.3 V LVTTL 3 PWON Power ON momentary, active high 4 THRU Thru connection to JP6 pin 4 5 GND Circuit Ground Table 1. Connector Functions CON ID Description JP1 Regulated +5V, 1.5A Power Input Jack CON1 SIM Card Holder J1 DB-9 RS-232 Serial Communication Port JP5 RJ25 Modular Jack TTL I/O JP6 Header Connector TTL I/O GSM Modem Pin Description Figure 1. GMS Modem jack and port connectors.
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GSM Modem ©2009 e-Gizmo Mechatronix Central Page 3 of 9 pages Table 4. Auxiliary connector PIN ID I/O DESCRIPTION 1
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