GSM / GPRS MODEM GSM20
Contents
1. GPRS Class 2 for hi speed data transfer Maestro 20 can be easily controlled by using AT command for all kinds of operations With standard 9 pin RS232 port and telephone like audio plug the Maestro 20 can be set up with minimal effort 1 1 Package The Maestro 20 package should include the following 1 Maestro 20 x 1 2 Power cord with fuse x 1 3 Safety note x 1 1 2 INTERFACES 15 pin Sub D Female Connector SIM holder eject button SMA female antenna connector Status indicator RS232 Audio SIM holder 4 PIN connector Power Input Output 1 2 1 Status indicator The LED will indicate different status of the modem off p on Modem switched off Modem is connecting to the network s flashing slowly Modem is in idle mode flashing rapidly Modem is in transmission communication GSM only 1 2 2 SMA female antenna connector Connect this to an external antenna with SMA male connector Make sure the antenna is for the GSM900 1800 frequency with impedance of 50ohm and also connector is secured tightly 1 2 3 15 PIN D SUB Female connector RS232 Audio The connector provides serial link and audio link to the modem Pin number Name EIA designation Type 1 DCD Data Carrier Detect Output 2 TX Transmit Data Input 3 BOOT Input 4 MICROPHONE Output 5 MICROPHONE Output 6 RX Receive Data Output 7 DSR Data Set Ready Output 8 DTR Data Termina2. INSATLLATION 2 1 Mounting the modem Use 4pcs of 3mm dia meter screw to mount the modem When using optional DIN rail mounting bracket Insert the mounting bracket to the grooves of the modem Then mount the modem with screws on the hole of bracket 2 2 Install the SIM card Use a ball pen or paper clip to press the SIM holder eject button The SIM holder will come out a little Then take out the SIM holder Note DO NOT pull out the SIM holder without pushing the ejector Put the SIM card to the tray make sure it has completely sit on the tray Put the tray back into the slot 2 3 Connect the external antenna SMA type Connect this to an external antenna with SMA male connector Make sure the antenna is for the GSM900 1800 frequency with impedance of 50ohm and also connector is secured tightly Note Please use antenna designed for GSM 900 1800 Mhz operation Incorrect antenna will affect communication and even damage the modem 2 4 Connect the DC power supply Connect the open ending of the included power cord to a DC supply Refer to the following for power supply requirement Power Supply Requirement Parameters Min Typical Max Supply voltage 5V 13 2V 32V Peak current at 5V supply 2 5A Average current at 5V supply in idle mode 35mA Average current at 5V supply in idle mode amp RS232 power l 13mA saving activated Connect the connector to the modem The modem will turn on
3. for a full description Note Issue AT CMEE 1 to have extended error code CME ERROR Description AT commands Modem response Comments AT CREG CREG lt mode gt 1 Modem registered to the network Network Registration TAR Checking CREG mode 2 Registration lost re registration attempt Modem not registration on the network no CREG lt mode gt 0 registration attempt Receiving signal i The first parameter has to be at least 15 for normal strength AT CSQ CSQ 20 0 communication RING An incoming call is waiting Receiving an ATA Answer the call incoming call OK ATD1234567 Don t forget the at the end for voice call OK Communication established Make a call CME ERROR 11 PIN code not entered with CMEE 1 mode AOC credit exceeded or a communication is CME ERROR 3 already established Make an emergency ATD 112 Don t forget the at the end for voice call call OK Communication loss NO CARRIER ATH Hang up OK AT CPIN 1234 OK PIN Code accepted Enter PIN code CME ERROR 16 Incorrect PIN Code with CMEE 1 mode CME ERROR 3 PIN already entered with CMEE 1 mode Saves parameters in non volatile memory AT amp W OK The configuration settings are stored 11 CHAPTER 4 Troubleshooting 4 1 The modem s LED does not light Check if the modem has connected to a 6 32V p
4. E DCE data rate AT IFC 2 2 DTE DCE flow control AT ICF 3 4 DTE DCE character framing ATE 0 ECHO AT amp C 1 DCD signal AT amp D 1 DTR signal ATQ 0 Result code suppression ATV 1 Response format AT amp S 1 DSR signal ATSO 0 Auto answer AT CLIP 0 Calling line ID presentation AT CRLP Calling line ID restriction AT CSCS PCCP437 AT CMGF 1 Message format AT CSMP 1 67 0 0 Test mode parameters AT CNMI 0 0 0 0 New message indication 6 2Input Output port This port can be configured as either an input one or an output one To configure it as an input port first issue AT WIOW 2 0 to disable the output port Use AT WIOR 1 to read the status of this input port Response WIOR 0 represent Logic HIGH 23V Response WIOR 1 represent Logic LOW lt 0 5V To use it as an output port issue AT WIOW 2 1 will turn it on and it will drain current to ground The current is recommended not to exceed 10 mA Issue AT WIOWZ2 0 will turn it off 6 3 RS232 AUTO ONLINE mode power saving When being in the AUTO ONLINE the RS232 transceiver will shutdown most of its hardware to save power if it does not detect a valid input for more than 100uS The RS232 transceiver will wake up when valid input is detected again By default the RS232 transceiver is put in AUTO ONLINE This mode can be turned off by issuing AT WIOW 4 1 14
5. T GSM GPRS MODEM GSM20 A GSM and GPRS Voice Fax SMS and Data Dual Band 900 1800MHz GSM Transmission Full voice call SMS support Accepts Standard SIM Card Miniature size 88 x 60 x 26mm Can Be Used On Standard GSM Network RS232 Interface AT command set GSM 07 05 and 07 07 GPRS Class B Class 2 28 8kbps download 14 4bps upload One user programmable input Output Port Integral SIM Card Holder Data Fax features Data circuit asynchronous transparent and non transparent up to 14 400 bits s Automatic fax group 3 Class 1 and Class 2 MNP2 V 42bis Voice features Telephony A Miniature Plug And Play dual band GSM modem It can Emergency calls be directly connected to the serial port of a desktop or notebook computer through the RS232 interface A Full Rate Enhanced and Half Rate standard SIM card can be inserted in the integral card e DTMF Function holder within the metal enclosure The Modems metal casing makes it an appropriate solution Data Fax features for tough applications such as Telemetry Wireless Local ef Loop payphones or as part of a fleet management Data circuit asynchronous transparent and system Its small size makes it simple to integrate in a non transparent up to 14 400 bits s space constraint environment The modem is supplied with power cable other accessories available are and antenna Automatic fax group 3 Class 1 and Class 2 with 1m coax cable RS232 connectin
6. automatically The status indicator on the modem will be lit when power on After a few seconds it will go flashing slowly registered to the network successfully refer 1 2 1 2 5 Connect the modem to external device You can use the optional RS 232 cable to connect the modem s SUB D connector to external controller computer Chapter 3 describes how to communicate with the modem soft in Microsoft Windows envoirnment CHAPTER 3 Working with Maestro 20 3 1 Checking the modem using Microsoft Windows HyperTerminal as example 3 1 1 On the first time power up you can use terminal software to communicate with the modem through an RS 232 serial Port Following Examples are using the HyperTerminal in Windows 98 HyperTerminal Bs Be Hypertrm exe AT amp T Mailht CompuServe hticons dll hypertrm dll Application Modified 24 08 1996 E 11 11 AM ieee MCI Mai ht Size 6KB 3 1 2 On Windows 98 start the HyperTerminal program Assign a name for a new session Dia als soles m Connection Description 3 1 3 Choose the correct Com port and baud rate settings 9600bps 8bits no paritybit 1 stop bit COM1 Properties 3 1 4 On the terminal screen type AT to check the OK response from the modem Maestro 20 HyperT erminal Ole als cls e 240 3 2 Basic Operation Followings are examples of some AT commands Please refer to the AT Command document
7. face GSM20 DINRL DIN Rail Mount For more information or general enquiries please call R F Solutions Ltd Unit 21 Cliffe Industrial Estate Lewes E Sussex BN8 6JL England Email sales rfsolutions co uk http www rfsolutions co uk Tel 44 0 1273 898 000 Fax 44 0 1273 480 661 RF Solutions is a member of the Low Power Radio Association Information contained in this document is believed to be accurate however no representation or warranty is given and no liability is assumed by R F Solutions Ltd with respect to the accuracy of such information Use of R F Solutions as critical components in life support systems is not authorised except with express written approval from R F Solutions Ltd DS020 1 Nov 02 2003 REG No 277 4001 ENGLAND Page 2 MAESTRO 20 GSM GPRS Modem 900 1800 USER MANUAL Rev 02 4 Oct 2002 CONTENTS SAFETY PRECUTIONS CHAPTER 1 INTRODUCTION CHAPTER 2 INSTALLATION CHAPTER 3 WORKING WITH MAESTRO 20 CHAPTER 4 TROUBLE SHOOTING CHAPTER 5 SPECIFICATION CHAPTER 6 APPENDIX Safety Precautions The modem generates radio frequency RF power When using the modem care must be taken on safety issues related to RF interference as well as regulations of RF equipment Do not use your phone in aircraft hospitals petrol stations or in places where using GSM products is prohibited Be sure that the modem will not be interfering with nearby equipment For example pacemakers or medica
8. g cable with e MNP2 V 42bis Telephone interface and a DIN Rail mounting adaptor About GPRS GPRS stands for General Packet Radio Short Messages Services features Services The user can remain ON all the time and the Text and PDU data Communication speed can rival with that of a cable Pointto point MT MO modem Cell Broadcast One Programmable Input Output Port SOM Supplementary Services One user programmable input Output Port Call Forwarding Calling Line Identity 3V CMOS logic Call Barring Advice of Charge Multiparty USSD Call Waiting Hold Closed User Group Explicit Call Transfer DS020 1 Nov 02 2003 REG No 277 4001 ENGLAND Page 1 gt oy 9 amp t GSM GPRS MODEM GSM20 Technical Specifications Max Storage Temperature 10 C to 70 C Max Operating Temperature 0 C to 55 C Dimensions 88mm x 60mm x 26mm Weight 100grams Electrical Characteristics Mn Typical Mex Units Supply Voltage Supply Current In Communication peak in communication idle mode idle mode with RS232 power saving Interfaces SIM holder integrated Drawer accepts standard SIM card 15 pin Sub D type connector for serial and audio connection 4 pin power supply connector micro FIT SMA antenna connector 50 ohm Ordering Information Part No Description GSM20 GSM GPRS Modem dual Band GSM20 Ant Antenna for GSM20 GSM20 CAB232 RS232 Cable Inter
9. l Ready Input 9 GND Ground Ground 10 SPEAKER Output 11 CTS Clear to Send Output 12 RTS Request to Send Input 13 RI Ring Indicator Output 14 RESET Input 15 SPEAKER Output Specification of microphone and speaker to be connected Parameters Min Typical Max Remark phone current 2V 2K Ohm 0 5mA phone input level 100 mVpp ker output current 150 Ohm 1nF 16mA ker impedance 320hm 1 2 4 4 PIN connector Power Input Output 2 Pin assignment of 4 pin connector Pin number Name Functions 1 O Input Output port Interrupt function triggered by pulling this pin to 2 INTR ground or LOW level reserved for additional functions with new firmware 3 POWER DC power negative input 4 POWER DC power positive input A cable included in the package shall be used for power supply connection I Connector Micro Fit 3 0 Fuse holder Stripped wire Fuse rating I O Parameters Min Typical Max Remark LOW voltage 0 5V HIGH voltage 3V 5V t max sink current 10mA INTR Parameters Min Typical Max Remark LOW voltage 0 0 5V pred by pulling this pin to LOV otherwise leave it open Please refers to Chapter 6 Appendix for using I O and INTR signals CHAPTER 2
10. l equipment The antenna of the modem should be away from computers office equipment home appliance etc Always keep a minimum safety distance of the antenna from human body Do not put the antenna inside metallic box containers etc Check for any regulation or law authorizing the use of GSM in vehicle in your country before installing the modem Install the modem by qualified personnel Consult your vehicle dealer for any possible interference of electronic parts by the modem Be careful when the modem is powered by the vehicle s main battery The battery may be drained after extended period Protecting your modem To ensure error free usage please install and operate your modem with care Do remember the following Do not expose the modem to extreme conditions such as high humidity rain high temperatures direct sunlight caustic harsh chemicals dust or water Do not try to disassemble or modify the modem There is no user serviceable part inside and the warranty would be void Do not drop hit or shake the modem Do not use the modem under extreme vibrating condition Do not pull the antenna or power supply cable Attach detach by holding the connector Connect the modem only according to the instruction manual Failure to do it will void the warranty In case of problem please contact authorized dealer CHAPTER 1 INTRODUCTION Maestro 20 is a ready to use GSM modem for voice data fax and SMS services It also supports
11. ower supply properly Check if the power connector is properly inserted Check the fuse on the power cord 4 2 The modem does not response to the terminal program Check if the RS 232 cable has been connected properly Check if your program has proper setting Factory setting of the modem is 9600bps 8 data bits no parity bit 1 stop bit 12 CHAPTER 5 Specifications e Dualband GSM 900 1800 Mhz Support Data SMS Voice and Fax e Max Power Output 2W 900Mhz 1W 1800Mhz Group 3 FAX support Class 1 and 2 e GPRS Class B Class 2 28 8kbps download 14 4kbps upload at maximum speed e SimToolKit Class 2 AT command set GSM 07 05 GSM 07 07 and WAVECOM proprietary Power requirement Input Voltage 5V to 32V DC MAX Current at 5V 450mA in communication 2 5A peak in communication 35mA in idle mode 13mA in idle mode with RS232 power saving Interfaces SIM holder 15 pin Sub D connector serial and audio connection 4 pin power supply connector e SMA antenna connector 50 ohm Dimensions Overall size 88mm x 60mm x 26mm Weight 100g Temperature range 15 C to 50 C operating 20 C to 65 C storage 13 CHAPTER 6 Appendix 6 1 Factory settings The modem has the following factory settings Please refer to the AT command document for the meaning of each setting Related AT commands Factory Settings Description AT IPR 9600 DT
Download Pdf Manuals
Related Search