User guide

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem CDMA Wireless Modem User Guide 8
Functions – CDMA Modes
Mode Description
Standard Dual Band 800/1900 MHz CDMA
Interface Serial interface RS232. V.24/V.28 Autobauding function. AT command set based on
TIA/EIA/IS707.3, V.25ter and GSM 07.05 & 07.07
SMS Mobile Originated (MO) and Mobile Terminated (MT), Over the Air Activation (OTA), OTASP,
and OTAPA
Data Asynchronous 2400, 4800, 9600, and 14400 bps.
Transparent and Non-Transparent modes.
Mode 3.1 KHz (PSTN) and V110 (ISDN).
Fax [phone]/9600 bps
Class 2.0 Group 3 compatible.
Electrical Characteristics
Electrical Characteristics
Switching the modem on/off The device is permanently powered (when connected to the power supply).
Voltage Range Voltage range : 5 to 32V DC
GND: 0V
Over voltage and Under voltage Correct operation of the Wireless MultiModem in communication mode is
not guaranteed if input voltage falls below 5V.
Input/output electrical characteristics for external connections
Parameters
800 MHZ 1900 MHZ
Unit
Typ. Typ.
Input Supply Voltage 5 13.2 32 5 13.2 32 V
Input supply current in comm. mode at full Tx
power
600 230 100 650 240 100 mA
Input supply current in comm. mode at average
Tx power
240 100 50 250 100 50 mA
Input supply current in idle mode 50 20 20 50 20 20 mA
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