User manual

H900 Series Cellular Router User Manual

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 Description Direction

of signal

Remark

1 CD Carrier Detect

--Æ

2 RXD Received Data

Å--

3 TXD Transmitted Data

--Æ

4 DTR Data Terminal Ready

Å--

5 GND Signal Ground

6 DSR Data Set Ready

--Æ

7 RTS Request To Send

Å--

8 CTS Clear To Send

--Æ

9 RI Ring Indicator

--Æ



 RJ-45 – Ethernet Interface

Self-adapting (Version 2.0 or above) standard 10/100BaseT Ethernet

switching interface

 ANT – antenna interface

The standard 5O/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.