User`s manual

PocketGSM Installation

2.1

2. INSTALLATION

The GSM modem installation must be carried out between a range of temperature indicated

in the manual.

Attention: the power supply voltage must not exceed the indicated maximum value as this may cause

a damage of the product.

2.1. PIN-OUT CONNECTOR

Connect the serial port of your device to PocketGSM through a 9 pin RS232 right standard

connector .

This table describes the position of the signals on Pocket GSM connector:

9 pin female connector (DCE) Pin Description Initials

1 Data Carrier Detect DCD

2 Receive Data RD

3Transmitted Data TD

4 Data Terminal Ready DTR

5 Signal Ground GND

6 Data Set Ready DSR

7 Request To Send RTS

8 Clear To Send CTS

9 Ring Indicator RI

In case your application supports TD and RD (transmission and reception)signals only, it

is possible to connect it to the Pocket GSM. In this case it is important to configure

PocketGSM to ignore the not present criteria.

[ For further information about commands, see the chapters “Functional Examples” and “AT

Commands”; you’ll find the “AT Commands” chapter in the user’s manual present on Digicom

website ]

The modem can receive AT commands at the speeds between 300 and 115200 bit/s.