User's Manual
Table Of Contents
- Contents
 - Version History
 - 1 Introduction
 - 2 Key features
 - 3 Terminal dimensions
 - 4 Installation
 - 5 Interface introduction
 - 6 Application Interface
 - 7 Electrical, Reliability and Radio Characteristics
 - 8 Software/ Firmware Upgrade
 - Appendix
 
        Smart Machine Smart Decision  
Figure 8: Power interface 
When a valid power appears the terminal will power up automatic, for the MCU that inside the terminal processed 
the power up part, MCU also acts as a Watch Dog, when the terminal runs wrong, MCU will cut off the power 
and recover it immediately to restart the terminal.   
6.2  Serial Interface 
T5320+G provides one asynchronous RS232 serial port (female).The RS232 standard interface serves to connect 
a PC, Data Terminal Equipment (DTE) or other application, which acts as host controller of the T5320+G 
Terminal with all its functions. Through the RS232 interface it can be used as GSM/GPRS modem for sending 
and receiving of SMS, Data and Fax calls. 
Figure 9: Pin assignment RS-232 (D-Sub 9-pole female) 
Table 4: 9-pole D-Sub (female) RS-232 
Pin no  Signal name  I/O  Function 
1  DCD  O  Data Carrier Detected 
T5320+G_User Guide_V1.01 16 2013-04-15 










