Altera Arria II GX Dev board and Terasic AD/DA Data Conversion Card -JTAG chain error

Hello,

I have to use together the following boards:

- Altera Arria II GX Dev board (main board)

- Terasic AD/DA Data Conversion Card (daughter board)

I did not change the default switch configuration.

When the daughter board is not plugged in the main board, the main board works fine: I manage to see the FPGA in the jtag chain and I manage to program it successfully.

If the daughter board is inserted, the jtag chain is not seenable any more.

Is there anyone using the same boards together?

Any suggestion is warmly appreciated!

Thanks on advance,

Altera_guy76