Chapter 6 – Application Considerations

Chapter 6 – Application

Considerations

General Guidelines for the Use of the SocketModem

Hardware and RF

· Ground plane: Multi-Tech recommends having a common ground plane for analog, digital and RF

grounds.

· ESD protection on serial link, …

· Possible spurious emission radiated by the application to the RF receiver in the receiver band

The Antenna

The antenna sub-system and integration in the application is a major issue. It is a major issue in the

choice of the antenna cable (type, length, performances, thermal resistance, etc.)

These elements could affect GSM performances such as sensitivity and emitted power.

The antenna should be isolated as much as possible from the digital circuitry including the interface

signals.

Multi-Tech recommends shielding the terminal. On terminals including the antenna, a poor shielding could

dramatically affect the sensitivity of the terminal. Subsequently, the power emitted through the antenna

could affect the application.

Firmware Upgrade

The SocketModem firmware is stored in flash memory and it can easily be upgraded.

The upgrade procedure is based on the Xmodem protocol (AT+WDWL command).

Nominal Upgrade Procedure

The firmware file can be downloaded into the modem using the Xmodem protocol. To enter this

mode, the AT+WDWL command (see description in the AT command manual) has to be sent to the

SocketModem.

The necessary serial signals to proceed with the Xmodem downloading are: Rx, Tx, RTS, CTS, GND.

Initial Configuration Using Mobile PhoneTools

For initial configuration of your wireless device, Multi-Tech offers a Windows-based mobile

PhoneTools application.

To load Mobile PhoneTools, click the Mobile PhoneTools icon on the system CD and follow the on-

screen prompts.

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Übersicht

1. Sicherheitshinweise

2. Lieferumfang

3. Montage und

Demontage der Klingen

4. Bedienung

6. Entsorgen

7. Problemlösungen

8. Technische Daten

Sommaire

Aperçu de l'appareil

1. Consignes de sécurité

2. Éléments livrés

3. Montage et

4. Utilisation

5. Nettoyage

7. Dépannage

6. Mise au rebut

8. Caractéristiques

9. Garantie

Panoramica

1. Istruzioni per la

2. Materiale in dotazione

3. Inserimento e

4. Funzionamento

5. Pulizia

7. Risoluzione dei

8. Dati tecnici

9. Garanzia

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1. Veiligheidsinstructies

2. Levering

Montage en demontage

4. Bediening

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6. Weggooien

7. Problemen oplossen

8. Technische gegevens

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Overview

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8. Technical

9. Warranty

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Vista general

1. Indicaciones de

2. Volumen de

3. Montaje y desmontaje

4. Manejo

5. Limpieza

6. Eliminación

7. Solución de

8. Datos técnicos

9. Garantía

Panoramica

1. Istruzioni per la

2. Materiale in dotazione

3. Inserimento e

4. Funzionamento

5. Pulizia

7. Risoluzione dei

8. Dati tecnici

9. Garanzia

Visão geral

1. Indicações de

2. Material a fornecer

3. Montagem e

4. Operação

5. Limpar

6. Eliminar

7. Solução de problemas

8. Dados técnicos

9. Garantia

Contents

Overview

1. Safety information

2. Items supplied

3. Fitting and removing

4. Operation

5. Cleaning

6. Disposal

7. Troubleshooting

8. Technical

9. Warranty

Übersicht

1. Sicherheitshinweise

3. Montage und

Demontage der Klingen

4. Bedienung

2. Lieferumfang

5. Reinigen

6. Entsorgen

7. Problemlösungen

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Prehad / Übersicht

Contents

Overview

1. Safety information

2. Items supplied

3. Fitting and removing

4. Operation

5. Cleaning

6. Disposal

7. Troubleshooting

8. Technical

9. Warranty

Przegld

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2. Zakres dostawy

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Übersicht

1. Sicherheitshinweise

2. Lieferumfang

3. Montage und

Demontage der Klingen

4. Bedienung

5. Reinigen

6. Entsorgen

7. Problemlösungen

8. Technische Daten

9. Garantie

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