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Chapter 2 – Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 7
General Specifications
General Specifications
Mechanical Dimensions & Weight
4.3" L x 2.4" W x 0.94" H; 4.2 oz.
(11 cm x 6.1 cm x 2.4 cm; 119 g)
Connectors & Fasteners Antenna Connection type: SMA jack
Interface Connector: USB Type B
Phone Handset: Modular handset jack
SIM receptacle: Standard 3V SIM receptacle
Operating Temperatures
-30° to +70°C
Storage Temperatures
-40° to +85°C
Humidity
Relative humidity 20% to 90% noncondensing
Certifications
CE Mark, R&TTE
EMC: FCC Part 2, 15, 22, 24, EN 55022 & EN 55024
Safety: cUL, UL 60950, EN 60950
Network: PTCRB
Functions – GSM/GPRS Modes
Mode Description
Standard
Quad Band 850/900/1800/1900 MHz
Interface
USB interface. USB Type B.
SMS
Mobile Originated (MO) and Mobile Terminated (MT) SMS Mode Text & PDU point to point. Cell
broadcast in accordance with GSM 07.05.
Data
Data circuit asynchronous, transparent, non-transparent up to 14,400 bits
Fax
Class 1 and Class 2 Group 3 compatible.
GPRS
Class 10. Coding schemes: CS1 to CS4.
Electrical Specifications
Electrical Characteristics
Switching on/off
The device is permanently powered when connected to the USB port.
Voltage
Voltage Range: 5 to 32V DC
GND: 0V
Current Requirements
GSM/GPRS 850/900 GSM/GPRS 1800/1900
Parameters
Typ. Typ.
Unit
Input average supply current in comm. mode at P
max
360 300 mA
Input average supply current in idle mode
30 30 mA
RF Specifications
GSM 850 EGSM 900 GSM 1800 GSM 1900
Frequency RX
869 to 894 MHz 925 to 960 MHz 1805 to 1800 MHz 1930 to 1990 MHz
Frequency TX
824 to 849 MHz 880 to 915 MHz 1710 to 1785 MHz 1850 to 1910 MHz
RF Power Stand
2W at 12.5% duty
cycle
2W at 12.5% duty
cycle
1W at 12.5% duty
cycle
1W at 12.5% duty
cycle