SIMCARD [RFSOLUTIONS]
LOW COST GSM MODEM; 低成本GSM MODEM
| 型号： | SIMCARD |
| 厂家： | 
RFSOLUTIONS.LTD |
| 描述： | LOW COST GSM MODEM |
| 文件： | 总10页 (文件大小：898K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LOW COST GSM MODEM
•
•
•
•
•
Dual Band 900 / 1800 MHz
Fax, SMS and Data
Integral SIM Card holder
Siemens TC-35i GSM Engine
Rugged Extruded Aluminium
Enclosure
•
•
Compact Form Factor
86 x 54 x 25mm
RS232 Interface with
Auto baud rate detection
•
•
SMA Antenna Connection
LED Indication of Operation
Description
The low cost TMAS GSM Modem is ideal for a wide range of applications. The modem can be used to make
circuit switched data calls, making the unit suitable for remote dial-up systems where a fixed phone line is not
available. The SMS functionality enables the sending and receipt of text messages. A common use for this
functionality is an SMS server for the automated sending and receipt of bulk text messages.
The modem implements the highly reliable Siemens TC35i GSM Engine. This ensures high quality and reliable
operation along with compatibility with all standard GSM networks. The modem provides support for the
Siemens TC35i AT command list, also available for download from the RF Solutions website.
The TMAS modem is supplied in a rugged extruded aluminium enclosure making it suitable for use in a wide
range of industrial and demanding environments. The unit connects directly to a PC or terminal device via the
DB-9 RS232 Cable interface. The integral SIM card holder accepts standard SIM cards of all network operators.
The only other connections required are to 6-40Vdc power supply and Antenna (supplied separately).
Part Numbering
Part Number
Description
GSM-T35I
Dual Band GSM Modem
GSM20-ANT
CABLE-RS232
SIMCARD
Antenna with 2.5 Metre Coax, SMA connector
RS232 Cable 9 Way D-Type Male to Female
Vodafone Pay as you talk SIM Card, £1.00 Credit, 10p/Text
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 1
LOW COST GSM MODEM
Table of Contents
1
2
Key Features ..................................................................................................................................................3
Interface description.......................................................................................................................................4
2.1 Power Supply..................................................................................................................................4
2.2 RS232 Interface..............................................................................................................................4
2.3 SIM Interface ..................................................................................................................................5
2.4 Radio Interface ...............................................................................................................................5
Operating Modes............................................................................................................................................6
3.1 Status LED......................................................................................................................................6
Basic Setup Information .................................................................................................................................7
4.1 Modem functionality Test................................................................................................................7
4.2 Basic AT Command List.................................................................................................................9
Mechanical Characteristics ..........................................................................................................................10
3
4
5
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 2
LOW COST GSM MODEM
1 Key Features
Features
Implementation
Transmission
Data, SMS, Fax
Single supply voltage
Min: 6Vdc
Max: 40Vdc
Power supply
GSM class
Small MS
•
•
Dual Band E-GSM 900 and GSM 1800
Compliant to GSM Phase 2/2+
Frequency bands
•
•
Class 4 (2W) for EGSM900
Class 1 (1W) for GSM1800
Transmit power
SIM card reader
External antenna
SMS
Internal
Connected via antenna SMA connector
MT, MO, CB, Text and PDU mode
•
CSD transmission rates: 2.4, 4.8, 9.6, 14.4
kbps, nontransparent,V.110
CSD DATA
FAX
•
Unstructured Supplementary Services Data
(USSD) support
Group 3: Class 1, Class 2
•
•
RS-232 interface, bi-directional bus for AT
commands and data
Multiplex ability according to GSM 07.10
Multiplexer protocol
Serial interface
•
•
Baud rates from 300bps to 115,200bps
Autobauding supports: 1,200, 2,400, 4,800,
9,600, 19,200, 38,400, 57,600 and 115,200bps
Supported SIM card
3V
Phonebook management
Supported phonebook types: FD, LD, MC, RC, ON, ME
Reset via AT command
Reset of Terminal TMAS GSM
Real time clock
Implemented (clock frequency 32.768kHz)
•
Normal operation: -20°C to +55°C
Humidity: max. 80% relative humidity
Environmental Temperature:
•
Size
86mmx54mmx25mm (Casing Dimension)
82g (Approx.)
Weight
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 3
LOW
COST GSM MODEM
2 Interface description
The TMAS GSM Terminal provides the following connectors for power supply, interfacing and antenna:
• 2.1mm DC power connector (centre/inner pin is positive)
• 9-pin (female) D-SUB plug for RS-232 serial interface
• SMA connector for antenna (radio interface)
• SIM card holder
2.1 Power Supply
The power supply of the TMAS GSM Terminal has to be a single voltage source of Vin=6V providing a peak
current of up to 500mA during transmission.
The terminal can be turned on by just plug in a 6VDC power supply. The terminal power supply circuit
automatically generates a low pulse signal not less than 100ms in order to wake up the Siemens TC35i GSM
engine.
In order for the terminal to shut down properly, wait for 10s after sending AT^SMSO before switching off the
power supply. This time is needed for the module to be safely logged off from the network and finish saving
data to the internal memory.
Each time the terminal is shut down, data will be written from the volatile memory to flash memory. The
guaranteed maximum number of write cycles is limited to 100,000.
2.2 RS232 Interface
Via RS-232 interface, the host controller controls the TMAS GSM/GPRS Terminal and transports data. The
table below shows the pin assignment of RS-232 (D-SUB 9-pin female).
Pin no.
Signal name
/DCD
/RXD
/TXD
I/O
Function
1
2
3
4
5
6
7
8
9
O
Data Carrier Detected
Receive Data
O
I
Transmit Data
Data Terminal Ready
Ground
/DTR
I
GND
-
/DSR
/RTS
O
I
Data Set Ready
Request To Send
Clear To Send
Ring Indication
/CTS
O
O
/RI
TMAS GSM/GPRS Terminal is designed for use as DCE. Based on the conventions for DCE-DTE connection,
it communicates with the user application (DTE) using the following signals:
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 4
LOW COST GSM MODEM
•
Pin TxD @ application sends data to TxD of TMAS GSM/GPRS Terminal
Pin RxD @ application receives data from RxD of TMAS GSM/GPRS Terminal
•
The RS-232 interface is implemented as a serial asynchronous transmitter and receiver conforming to ITU-T
V.24 Interchange Circuits DCE. It is configured for 8 data bits, no parity and 1 stop bit, and can be operated at
bit rates from 300bps to 115Kbps. Autobauding supports bit rates from 4.8Kbps to 115Kbps. Hardware
handshake using the /RTS and /CTS signals and XON/XOFF software flow control are supported.
In addition, the modem control signals /DTR, /DSR, /DCD and /RING are available. The modem control signal
RING (Ring Indication) can be used to indicate to the cellular device application, that a call or Unsolicited Result
Code (URC) is received. There are different modes of operation, which can be set with AT commands.
2.3 SIM Interface
The SIM interface is intended for 3V SIM cards in accordance with GSM 11.12 Phase 2. The card holder is a 5
wire interface according to GSM 11.11. A sixth pin has been added to detect whether or not a SIM card is
inserted.
Removing and inserting the SIM card during operation requires the software to be reinitialized. Therefore, after
reinserting the SIM card it is necessary to restart the terminal.
Note:
•
No guarantee can be given, nor nay liability accepted, if loss of data is encountered after removing the
SIM card during operation.
•
No guarantee can be given for properly initializing any SIM card that the user inserts after having
removed a SIM card during operation. In this case, the application must restart the terminal.
2.4 Radio Interface
An internal RF cable is connected from the antenna reference point (antenna connector type GSC from Murata)
to the SMA (female) connector. To attach the antenna to the TMAS GSM/GPRS Terminal, turn smoothly and
slowly to the SMA (male) connector of antenna at clockwise direction.
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 5
LOW COST GSM MODEM
Both single band and dual band antenna can be used for TMAS GSM/GPRS Terminal as long as it comes with
the SMA (male) connector.
3 Operating Modes
The table below briefly summarizes the various operating modes of the TMAS GSM terminal
Mode
Function
SLEEP
Various power saving modes set by AT+CFUN command.
Software is active to minimum extent. If the Terminal was registered to the GSM
network in IDLE mode, it remains, in SLEEP mode, registered and pageable from
the BTS.
Power saving can be chosen at different levels. The NON-CYCLIC SLEEP mode
(AT+CFUN=0) disables the AT interface. The CYCLIC SLEEP mode AT+CFUN=5,
6, 7 and 8 alternatively activate and deactivate the AT interface to allow permanent
access to all AT commands.
GSM IDLE
GSM TALK
Software is active. Once registered to the GSM network, paging with BTS
Is carried out. The Terminal is ready to send and receive.
Connection between two subscribers is in progress. Power consumption depends
on network coverage individual settings, such as DTX off/on, FR/EFR/HR, hopping
sequences, antenna.
3.1 Status LED
A red LED displays the operating status of the terminal.
The table below summarizes the coding of the red LED status
Operating status
LED
Power Down
Off
Not registered to the net (missing SIM, PIN, net)
Standby (registered to the net)
Sleep mode (Power save mode, registered to the net)
Talk mode, GPRS data
Fast Blinking
Slow Flash (75ms On / 3s Off)
Off
On
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 6
LOW COST GSM MODEM
4 Basic Setup Information
4.1 Modem functionality Test
On the first time power-up you can use terminal communications program to communicate with the modem
through the RS-232 serial port. Following example is using the HyperTerminal in Windows XP.
4.1.1 Select Hyperterminal from the Start Menu
4.1.2 Start the HyperTerminal program and assign any name for a new session.
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 7
LOW COST GSM MODEM
4.1.3 Choose the Com port connected to the modem. The unit features auto bauding so any baud rate from
1.2 to 115.2 Kbps can be used, 8bits, no parity bit, 1 stop bit)
4.1.4 On the terminal screen, type “AT” to check the “OK” response from the modem
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 8
LOW COST GSM MODEM
4.2 Basic AT Command List
The commands in the table below can be used for basic control of the GSM modem.
Description
Network Registration AT+CREG?
Checking
AT commands
Modem response
CREG=<mode>,1
Comments
Modem registered to the network
CREG=<mode>,2
CREG=<mode>,0
Registration lost, re-registration
attempt
Modem not registration on the
network, no registration attempt
Receiving signal
strength
Receiving an
incoming call
AT+CSQ
+CSQ: 20,0
RING
The first parameter has to be at
least 15 for normal communication
An incoming call is waiting
ATA
Answer the call
OK
Make a call
ATD1234567;
Don’t forget the « ; » at the end for
« voice » call
OK
Communication established
CME ERROR : 11
PIN code not entered (with + CMEE
= 1 mode)
CME ERROR : 3
CME ERROR : 10
AOC credit exceeded or a
communication is already
established
Cannot read the SIM card
Don’t forget the « ; » at the end for
« voice » call
Make an emergency ATD 112;
call
OK
NO CARRIER
Communication loss
Hang up
ATH
OK
Enter PIN code
AT+CPIN=1234
OK
PIN Code accepted
+CME ERROR : 16
Incorrect PIN Code (with +CMEE =
1 mode)
+CME ERROR : 3
PIN already entered (with +CMEE =
1 mode)
Saves parameters in AT&W
non-volatile memory
OK
The configuration settings are
stored
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 9
LOW
C
OST GSM MODEM
5 Mechanical Characteristics
Weight
82g
Dimension
86mmx54mmx25mm
-20°C to +55°C
Temperature range
Air humidity
Casing material
Maximum 80% relative humidity
Aluminium alloy
For more information or general enquiries contact:
R F Solutions Ltd.
Unit 21, Cliffe Industrial Estate,
South Street, Lewes, BN8 6JL, England.
Email: sales@rfsolutions.co.uk
Tel: +44 (0)1273 898 000
Web: http://www.rfsolutions.co.uk
Fax: +44 (0)1273 480 661
DS-GSMT35I-2 Oct ’07
www.rfsolutions.co.uk
2007 REG No 277 4001, ENGLAND.
Page 10
相关型号：
SIMID
Size 0603 (EIA) and/or 1608 (IEC) Rated inductance 1 nH to 220 nH Rated current 110 mA to 1800 mA
EPCOS
SIMID-0603-C
Size 0603 (EIA) and/or 1608 (IEC) Rated inductance 1 nH to 220 nH Rated current 110 mA to 1800 mA
EPCOS
©2020 ICPDF网 联系我们和版权申明