3
DS100-1 May ’07
www.rfsolutions.co.uk
©
2007 REG No 277 4001, ENGLAND.
Page 3
GSM & GPRS Modem
CHAPTER 1
INTRODUCTION
Maestro 100 is a ready-to-use GSM modem for voice, data, fax and SMS services. It also supports GPRS
Class 10 for hi-speed data transfer. Maestro 100 can be easily controlled by using AT command for all
kinds of operations. With standard 9-pin RS232 port and telephone-like audio plug (via optional cable) the
Maestro 100 can be set up with minimal effort.
1.1. Package
The Maestro 100 package should include the following:
1. Maestro 100 or 100T x 1
2. Power cord with fuse x 1
3. Safety note x 1
1.2. Interfaces
1.2.1. Status indicator
The LED will indicate different status of the modem:
- off
Modem
switched
off
-
on
Modem is connecting to the network
-
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
correct GSM frequency with impedance of 50ohm, and also connector is secured tightly.
SIM holder eject button
Status indicator
SIM holder
4-PIN connector (Power, Input / Output)
15 pin Sub-D Female Connector
(RS232/Audio)
SMA female antenna connector
