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
7.5 BOOT
This signal must NOT be connected, NOT used. Its use is strictly reserved for the
manufacturer.
7.6 RESET
7.6.1 General presentation
This signal allows performing a Hardware RESET of the modem. In fact, this pin is used to force a RESET of
the modem by putting it downwards during at least 10 ms.
This signal must be used only in case of emergency RESET.
This signal must be driven with an open collector assembly:
pin 14 (RESET) at 0, for the modem Reset,
pin 14 (RESET) at 1, for normal mode.
Table 23 : Description of RESET pin
Signal
Connector Sub HD
Pin number
I/O I/O type Description
RESET 14 I/O SCHMITT Reset Modem
• This signal must be used only in case of emergency RESET. A Software RESET is always
preferable to a Hardware RESET. It is strongly unadvised to execute this function whilst in
communication or dialog, without having first detached it from the operator network.
• Using the RESET does not restore the factory parameters.