The GPS of MC7430 does not work


I am trying the GPS function of MC7430.
But I can’t make it work after a lot of test.
I had confirmed my environment is ready for GPS test with MC7710.

I confirmed the GPSENABLE is 1 in customization settings.
I start GPS fixing by command ‘AT!GPSFIX=1,240,4294967280’.
But it always fail as below by check with command ‘AT!GPSSTATUS?’
Current time: 1980 01 06 6 01:08:25
1980 01 06 6 00:00:00 Last Fix Status = FAIL, FAILCODE = 0
1980 01 06 6 00:00:00 Fix Session Status = FAIL, FAILCODE = 0
No TTFF available

The firmware version on my MC7430 is ‘SWI9X30C_02.14.03.00 r6134 CARMD-EV-FRMWR2 2016/03/28 14:34:1’.
Could someone give me some suggestion?



I found the root cause is the antenna power off on default.
After enable the power by AT command, the GPS function work well now.