EG_GenPro53e_1040_UG_003_UK
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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 modifications
7.2.3 Protections of the power supply
The modem is protected by a F2 A / 32 V fuse directly assembled on the power supply cable supplied with
the modem.
Fuse reference: Mini Blade car 2A - 32V (code couleur : grey)
The modem is also internally protected against tension peaks of more than 32 V.
Filter guarantees:
EMI/RFI protection in input and output and signal smoothing.
It is necessary to use the supply cable delivered with the modem, otherwise the modem will
not be protected.
7.3 RS232 serial link
7.3.1 General Presentation
The RS232 interface provides an adaptation of the tension levels
(V24/CMOS
⇔
V24/V28) between the
GSM/GPRS module (DCE) and the communication port of a PC (DTE).
The RS232 interface is internally protected (ESD protection) against electrostatic peaks coming from the
RS232.
Filter guarantees:
EMI/RFI protection in input and output and signal smoothing.
The RS232 interface was designed to allow a certain flexibility in the use of the serial interface signals.
In fact, after the setting (see command
AT+IFC
) if the
GenPro 53e
contains the EGM standard library (see
the documents "EG_EGM_CL_xxx_yy" of ERCO & GENER) in this case, the modem can work in 3-wire
mode (using only the signals TX, RX, GND), but the use of the signals
TX, RX, GND, CTS, RTS is required
for a GPRS application.
7.3.2 Serial link RS232_0
The signals of the RS232_0 are available on the 16-pin Micro FIT connector and on the 9-pin Sub D
connector. (see chapter 3.2.2.3 16-wire micro FIT cable)
TX data (CT103/TX_0) : Data emission,
RX data (CT104/RX_0) : Data reception,
Request To Send (CT105/RTS_0) : Request to send,
Clear To Send (CT106/CTS_0) : Ready to send.
