Wavecom WMO2 GSM 900 User manual

USER MANUAL
WMO2 Modem Series
GSM 900 / 1800 / 1900
GUIDE 19/04/99, 9:201

SUMMARY
1. PRODUCT DESCRIPTION 1
1.1 Package content 1
1.2 Product 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. DESCRIPTIONOFTHEINTERFACES 7
3.1 LED Function 7
3.2 Connectors 7
4. TECHNICAL DATA 11
SUMMARY
Wavecom WMO2 Modem
GUIDE 19/04/99, 9:202

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. NOTESONSAFETY 16
6.1 General safety 16
6.2 Vehicle safety 17
6.3 Car And Maintenance 17
6.4 Your responsibility 18
7. GENERALINFORMATIONS 19
SUMMARY
Wavecom WMO2 Modem
GUIDE 19/04/99, 9:203

1. PRODUCTDESCRIPTION
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.
PRODUCTDESCRIPTION
Wavecom WMO2 Modem 1
Micro-Fit
connector
TM
SUB HD
connector
Front cap
LED
Extractible
SIM holder
SMA
connecto
r
Back cap
Figure 1
Modem presentation
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1.3 Physical characteristics
1.4 Functions - GSM Modes
1.5 Temperature range
Operating conditions : From -20°C to +55°C
Storage conditions : From -25°C to +70°C
PRODUCTDESCRIPTION
Wavecom WMO2 Modem 2
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2INSTALLATION/START-UP
2.1 Mounting the modem
For mountingthe modem,bindto the bodytheholding bridlesaccordingto theschemabelow :
Figure 2
Modem mounting
2.2 Installing the modem
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.
INSTALLATION/START-UP
Wavecom WMO2 Modem 3
Note:
- To be attached to a plain surface
- Screw head max. height: 2mm
2
m
m
Holding bridles
2
mm
GUIDE 19/04/99, 9:216

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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2.3.4 Power supply cable
A cable, included in the package shall be used for power supply connection.
Thewiresaremarkedasfollows:
Cable : 1 wire
Ame : tinned copper 24x0.2 mm
Section : 0.75 mm2
Figure 3
Power supply cable
INSTALLATION/START-UP
Wavecom WMO2 Modem 5
+
-
Side view
Connector Molex Micro-Fit 3.0
TM
Cables stripped over 200 mm,
protected by their own sheath Standard cable sheath
Stripped wire, tinned over 5 m
m
- +
GUIDE 19/04/99, 9:218

2.3.5 Input/output electrical characteristics defined for all external connections
2.3.6 Protection/on-board network connection
The modem is protected by a fuse directly binded on the power supply cable.
INSTALLATION/START-UP
Wavecom WMO2 Modem 6
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GUIDE 19/04/99, 9:219

3. DESCRIPTIONOFTHEINTERFACES
The modem comprises several interfaces:
- LED function indicating operating status
- External antenna (via SMA)
- Serial and control link (via 15 pins SUB D)
- Power supply (via 4 pins Micro-FitTM)
- SIM card holder
3.1 LED Function
- LED off Device switched off - Not ready
- LED on Device switched on - Connecting to network
- LED flashing slowly Device switched on - Idle mode
- LED flashing rapidly Device switched on - Transmission mode
3.2 Connectors
DESCRIPTIONOFTHE INTERFACES
Wavecom WMO2 Modem 7
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GUIDE 19/04/99, 9:2110