厦 门 才 茂 通 信 科 技 有 限 公 司
Xiamen Cai
more
Communication Technology Co.,Ltd
Add: 3F, 1st Building, 23# Wanghai Road, Xiamen
Tel: +86-592-5902655
Web:
http://en.cai
more.
com
Fax:+86-592-5975885
10
1.4 Power Supply
The DTU model can be used in complex environment. Usually, the range of power changes large. To
adapt to complex application environment excellently and improve the stability of system, the power
supply adopts advanced power technology, and power provided directly by external power supply
transformer.
Notice:
When DTU changes information with base station, the instantaneous current changes quickly and peak
current is very large. So it requires higher quality of external power supply transformer.
1.5 Detect The Network
Please connect the cable and ensure that it is correct, then connect antenna, put into a valid SIM card
and power the DTU, then the PWR indicator will light. If DTU connect to network, the online indicator
will flash. And it will normally light after connect to server. It indicates that DTU works normally. When
there is data transmission in user data interface, the ACT lamp flashes.
Notice:
Please confirm that antenna and serial port line connect DTU and SIM card has been inserted before
powering up.
2 Configuration Mode
There are three configuration mode for DTU: local serial port configuration, remote network
configuration and remote SMS configuration(only 3180 series support it).
2.1 Local Serial Port Configuration
There are two configuration of local serial port configuration, tool configuration and manual
configuration. The instruction focus on tool configuration.
2.1.1 Tool Configuration
1
、
Connect DTU and computer by serial port line, and pay attention to the serial port number of
computer.
The principle of connection between DTU and computer which is used to configure DTU
parameters as follow:
