F low Chart of Troubleshooting
12. GSM Transmitter
TX O N (5Level)
Y es
O S C 100 p in 10
<= 3.5V
Y es
O S C 100 p in 1
>= 2d B m
Y es
L115
>= 30d B m
Y es
C 108
>= 30d B m
N o
C h eck U 100
E N D
N o
N o
N o
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R es o ld er U 101
R es o ld er O S C 100
R es o ld er U 102
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