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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.
7.3.2 Auto-baud mode
The auto-baud mode allows the modem to automatically detect the transmission speed used by the DTE.
Only the following speeds will be detected : 2400, 4800, 9600, 19200, 38400, 57600 bps. Auto-baud
detection cannot be guaranteed for speeds below or above these speeds.
The auto-baud mode is controlled by the AT commands. This function is explained in detail in the Wavecom
“Commands Interface Guide”.
Note : By default, the GenPro is delivered with the RS232 interface configured to 9600 bps, no parity, 8 data
bits, 1 stop bit.
7.3.3 Pins description
Table : Pins description
Signal
Pin number on Sub
HD connector
I/O
RS232
standard
Description
Alternative Function
CTXD/CT103
2
I
TX
Transmit serial data
CRXD/CT104 16 O
RX
Receive
serial
data
CRTS/CT105
12
I
RTS
Request To Send
CCTS/CT106
11
O
CTS
Clear To Send
CDSR/CT107 7 O
DSR
Data
Set
Ready
CDTR/CT108-2
8
I
DTR
Data Terminal Ready
CDCD/CT109 1 O
DCD
Data
Carrier Detect
Buzzer output (1*)
CRI/CT125
13
O
RI
Ring Indicator
3.8V DC output (1*)
CT102/GND 9
Ground
(1*) Optional, please consult us.
7.4 General Purpose Inputs / Output
Only the Gen Pro 24e modems is equipped with 3 opto-coupled inputs and 1 open-collector output for
external use (please consult us).
The modem GenPro 20e is not equipped with GPIO’s see Product Differences table).
The shock detector is pre-assembled option which must be requested when ordering.
Note : See chapter
8.2.4 General purpose inputs / output
for complete characteristics of the inputs/output.
