Wavecom WMOD2 User Manual

GUIDE 19/04/99, 9:201

WMO2 Modem Series

GSM 900 / 1800 / 1900

USER MANUAL

SUMMARY

1. PRODUCT DESCRIPTION 1

1.1 Package content 1

1.2 P roduct presentation 1

1.3 Physical characteristics 2

1.4 Functions - GSM Modes 2

1.5 Temperature range 2

2. INSTALLATION/START-UP 3

2.1 Mounting the modem 3

2.2 Installing the modem 3

2.3 Electrical characteristics 4

2.3.1 Switching the GSM modem on/off 4

2.3.2 Voltage range 4

2.3.3 Overvoltage/undervoltage 4

2.3.4 Power supply cable 5

2.3.5 Input/output electrical characteristics defined for all external connections 6

2.3.6 Protection/on-board network connection 6

3. DESCRIPTION OF THE INTERFACES 7

3.1 LED Function 7

3.2 Connectors 7

4. TECHNICAL DATA 11

Wavecom WMO2 Modem

SUMMARY

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5. TROUBLESHOOTING: Specific defaults possibly encountered 12

5.1 The modem does not answer through the serial link 12

5.2 The modem always returns «Error» when trying to issue a communication 13

5.3 The modem always returns «No carrier» when trying to issue a communication 14

6. NOTES ON SAFETY 16

6.1 General safety 16

6.2 Vehicle safety 17

6.3 Car And Maintenance 17

6.4 Your responsibility 18

7. GENERAL INFORMATIONS 19

SUMMARY

Wavecom WMO2 Modem

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1. PRODUCT DESCRIPTION

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The Wavecom WMO2 modem exist under three different references:

- WMO2-G900 : GSM 900 MHz version

- WMO2-G1800 : GSM 1800 MHz version

- WMO2-G1900 : GSM 1900 MHz version

1.1 Package content

The Wavecom WMO2 modem package comprises:

- 1 Modem

- 2 holding bridles

- 1 Power supply cable + fuse

- 1 User manual (this document)

1.2 Product presentation

The Wavecom WMO2 modem is a terminal for fax and data transmission, short message service mobile originated, short
message service mobile terminated and voice calls.
The connectors binded to the body guarantee output and input connections.
An extractible holder is used to insert the SIM card (Micro-SIM type). A LED indicates the operating mode.

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Front cap

Wavecom WMO2 Modem 1

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Modem presentation

Back cap

Figure 1

LED

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Extractible
SIM holder

PRODUCT DESCRIPTION

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1.3 Physical characteristics

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1.5 Temperature range

Operating conditions : From -20°C to +55° C
Storage conditions : From -25°C to +70°C

Wavecom WMO2 Modem 2

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2 INSTALLATION/START-UP

2.1 Mounting the modem

For mounting the modem, bind to the body the holding bridles according to the schema below :

Note:

- T o be attached to a plain surface

- Screw head max. height: 2mm

Holding bridles

Figure 2

Modem mounting

2.2 Installing the modem

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To install the modem, plug the device on a DC power supply (for automotive application,
connect the device on the permanent « + » and insert the SIM card in the holder).

Make sure that an antenna is connected.
In order to extract or to insert the Micro SIM card, it is necessary to press the SIM holder ejector with a sharp element (a pen

for example).
If this sequence is not respected, the SIM holder could be damaged.

Wavecom WMO2 Modem 3

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INSTALLATION/START-UP

2.3 Electrical characteristics

2.3.1 Switching the GSM modem on/off

The device is permanently powered (when connected to the power supply).

2.3.2 Voltage range

Voltage range : 5 to 32V DC (GSM 900) - 6 to 32V DC (GSM 1800/1900)
GND : 0V

2.3.3 Overvoltage/undervoltage

Correct operation of the Wavecom WMO2 modem in communication mode is not guaranteed if input voltage
fall below 5V (GSM 900) - 6V (GSM 1800/1900). The modem is protected against voltage over 32V.
When input voltages exceed 32V, the supply voltage is disconnected in order to protect the electronic components from an
overvoltage.

TWO CASES ARE POSSIBLE:

- IF THE OVERVOLTAGE IS CONTINUOUS, THE PROTECTION IS GUARANTEED BY THE FUSE.

- IN THE CASE OF TRANSIENT PEAKS, THE MODEM GUARANTEES ITS OWN PROTECTION.

INSTALLATION/START-UP

Wavecom WMO2 Modem 4

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