User guide
Table Of Contents
- Presentation
- Warning
- Copyright
- 1 References
- 2 Packaging
- 3 General presentation
- 4 Characteristics and Services
- 5 Use of the modem
- 5.1 Starting with the modem
- 5.2 Specific recommendations for the use of the modem in vehicles
- 5.3 GSM led of the modem
- 5.4 Echo function of AT commands deactivated
- 5.5 Checking the quality of the GSM reception signal
- 5.6 Verification of PIN code
- 5.7 Verification of modem registration on GSM network
- 5.8 Verification of modem registration on GPRS network
- 5.9 Verification of internal voltages of the modem
- 5.10 Main AT commands (HAYES)
- 5.11 Turning OFF the modem
- 5.12 Updating procedure of the modem
- 6 Trouble Shooting
- 7 Functional description
- 8 Technical characteristics
- 8.1 Mechanical characteristics
- 8.2 Electrical characteristics
- 8.3 Environmental characteristics
- 8.4 Standards/Conformities
- 9 Security recommendations
- 10 Recommended accessories
- 11 Client support
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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modification.
Dct_427_01
5.2 Specific recommendations for the use of the modem in vehicles
The power supply connector of the modem GenPro 25e must NOT be directly connected to
the battery of the vehicle.
5.2.1 Recommended connection on the battery of a truck
All trucks have a Circuit Breaker outside the cabin. The circuit breaker is used for security reasons: for
example, if a fire breaks out in the electric box of the truck, the driver can cut off the power source and avoid
more damage (explosion).
The circuit breaker is connected to the ground of the truck, usually connected to the fuse box.
Most of truck circuit breakers do not cut off the PLUS of the battery, but cut off the ground.
Figure 15 : Recommended connection on the battery of a truck
The scheme above shows a recommended power connection where the connection of the modem ground is
not directly connected to the battery, but connected after the circuit breaker (to the ground of the truck or in
the fuse box).