User`s manual

User’s Manual
GSM35 7 RTD Finland Oy
Chapter 1
- I
NTRODUCTION
This user’s manual describes the operation of the RTD GSM35 integrated
global GSM wireless modem designed for mobile, marine, and automotive
applications.
Features
Some of the key features of the GSM35 include:
•
Low power Dual band Siemens TC35 cellular engine, GSM900/1800Mhz
•
9,6/14,4 kbit/s datarate, group 3 faxes, SMS and SMS cell broadcast
•
Onboard SIM-card socket for 3V standard cards
•
16C550 UART interfaces to host computer
•
Supports COM1,COM2,COM3,COM4 or COMx
•
Available IRQ’s 2,5,6,7,10,11,12,14,15
•
Status LED indicating GSM activity and status
•
16 TTL I/O’s 8 outputs 8 inputs
•
+5V only operation, 2.3W typical
•
Wide operating temperature range –20 to + 70C guaranteed
•
Onboard temperature sensor
•
Fully PC/104 compliant, IDAN versions available
The following paragraphs briefly describe the major features of the GSM35. A
more detailed discussion is included in Chapter 4 (Hardware description) The
boards installation is described in Chapter 2 (Board Installation).
GSM cellular modem
The Real Time Devices GSM35 wireless GSM modem unit provides a
direct and reliable GSM connection to stationary or GSM 900/1800 mobile
fields around the world. GSM connectivity is achieved using the Siemens
TC35 engine. This unit works in the 900/1800MHz band supporting GSM
02.22 network and service provider personalisation.
Connect any standard GSM antenna directly to the OSX connector of the
GSM35. The antenna should be connected to the TC35 using a flexible
50-Ohm antenna cable. In IDAN installations the antenna connection is
brought to the front side of the IDAN-frame. The antenna used should
meet the following specifications: Frequency 890-910MHz (TX), 935-
960MHz (RX); Impedance 50 Ohms; VSWR 1,7:1 (TX) 1,9:1 (RX); Gain
<1,5dB references to 1/2-dipole; 1W power (cw) max 2W peak at 55
degrees Centigrade.