Enfora GSM2228UG001 用户手册

下载
页码 55
Mini-MT User Guide 
Revision 1.02 
 
GSM2228UG001                                                                                                            Page 39 
9  GPS Operation and Verification 
 
The Mini-MT contains an integrated GPS receiver and GPS antenna.  For best GPS 
performance the unit should be placed in an area where it can have direct view of the sky. 
 
9.1  Verification of GPS Lock 
 
The Mini-MT will provide an indication of successful GPS Lock within approximately 
70 seconds when in view of satellites. 
 
The GPS LED will flash yellow when it is receiving a sufficient number of satellites to 
provide status.  When this occurs, the internal GPS receiver has enough information to 
track its current position. 
 
9.2 Verify GPS operation 
 
The Mini-MT GPS status may be obtained locally through the USB connection or 
through the GPRS connection to a server.  The following steps allow the user to 
determine GPS operation through a terminal program and also through the Enfora 
Demonstration web server.