Am getting this AT S7=45 S0=0 L1 V1 X4 &c1 E1 Q0 wen i connect beagle board to minicom

Hi pls help me..
I got my bb c4 2 daya bak now wen i connect IDC-09 and external power
supply to the board..
wen i opened the device using minicom its not displaying anything
except

Welcome to minicom 2.4

OPTIONS: I18n
Compiled on Jan 25 2010, 06:49:09.
Port /dev/ttyUSB5

Press CTRL-A Z for help on special
keys

AT S7=45 S0=0 L1 V1 X4 &c1 E1 Q0

pls help me as i am afraid ther might b prob with device...