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C2000 Launchpad SCI UART problem

Hello,
I have some problem with C2000 Launchpad uart communication,
When I have used XDS100 JTAG Emulator on the board
I can observe the demo program on the serial port (ti icon purely),
but Also I want to use UART pins of the board (SCIA pins J1-3, J1-4).
When I use that pins I see something similar to XDS100 JTAG Emulator output
but not correctly like that it has some distorsions.
(I have tried to change boudrates but it doesnot work)

Also I have tried that with simulink,
I have used simulink blocks of C2000 processor,
For example when I transmit "4" through the SCI
I can observe that on the USB with XDS100 JTAG Emulator,
Also I can observe that on J1-3,4 pins but After "4",
"Ç" flowes continuously on J1-3,4 pins,
(I used the same blocks to test USB and uart pins)

Could you help me about that problem??