EG_GenPro78e_1003_UG_007_UK
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Description and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modifications.
3.2 External connections
3.2.1 Connections
3.2.1.1 GSM antenna connector
The GSM antenna connector is a 50
Ω
impedance female SMA type.
3.2.1.2 4-pins Micro FIT female connector
This connector allows the connection of an external DC supply.
Pin N°
Signal
1 +VDC
2 GND
3 NC
4 NC
WARNING: pins 3 and 4 are not wired. It is strictly forbidden to connect a supply voltage to these pins – the
modem may be damaged.
3.2.1.3 15-pin Sub HD female connector
This connector provides:
- The serial RS232 link,
- The audio line connection (microphone and loud-speaker),
- The BOOT and RESET signals.
Pin N°
Description
Circuit (V24 – RS232C)
I/O
1
Signal detection / Buzzer
109 – DS – DCD
O
2
Data transmission
103 – ED – TXD
I
3 Boot
BOOT
I
4 Microphone
+
MIC2P I
5 Microphone
-
MIC2N I
6
Data reception
104 – RD – RXD
O
7
Data Set Ready
107 – PDP – DSR
O
8
Data Terminal Ready
108/2 – TDP – DTR
I
9
Ground
102 – TS – GND
-
10
Loud S
SPK2P
O
11
Clear To Send
106 – PAE – CTS
O
12
Request To Send
105 – DPE – RTS
I
13
Ring Indicator / 3,8V
125 – IA – RI
O
14 Reset
RESET
I
15
Loud Speaker -
SPK2N
O
Note : the pin 3 is not used.