E-Lins H900 Series User Manual page 17

3.2.2.3 Serial port connect
COM – serial interface
COM serial communication interface is a standard RS-232(DCE) interface
with DB9 terminal (negative terminal). It can be used for the configured
console (CONSOLE) or normal communication interface.
The cables of RS-232(DCE) interface are defined as follows:
DB-9 connector (DCE-negative terminal)
PIN Name
1 CD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
RJ-45 – Ethernet Interface
Self-adapting (Version 2.0 or above) standard 10/100BaseT Ethernet
switching interface
ANT – antenna interface
The standard 5OΩ/SMA radio-frequency connector (negative terminal) is
adopted for use. In addition, the lightning-proof measures need to be
adopted for some operating conditions, so you may place a lightning
protection device between the connector and the antenna.
Attention:
1. The products shall be far away from any heating device;
2. Don't place the products in the dusty or wet environment;
3. The products shall be far away from some potential interference sources, like the metal wall, and
micro-wave oven, etc;
4. Pay attention to the position and angle of antenna to ensure it works well. Don't place the
antenna in the shielding metal box.
Description
Carrier Detect
Received Data
Transmitted Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request To Send
Clear To Send
Ring Indicator
H900 Series Cellular Router User Manual
Direction
of signal
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Remark
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