diff --git a/boards/uniboard2/libraries/unb2_board/src/vhdl/unb2_board_pkg.vhd b/boards/uniboard2/libraries/unb2_board/src/vhdl/unb2_board_pkg.vhd
index 95d0bb85e814c6c16f5ad6c0471ab9f3a766bb90..33484bcbe6d0dcfa8148a7732579b56af7d353a4 100644
--- a/boards/uniboard2/libraries/unb2_board/src/vhdl/unb2_board_pkg.vhd
+++ b/boards/uniboard2/libraries/unb2_board/src/vhdl/unb2_board_pkg.vhd
@@ -72,7 +72,8 @@ PACKAGE unb2_board_pkg IS
     i2c_w                             : NATURAL;
   END RECORD;
 
-  CONSTANT c_unb2_board_tr_back              : t_c_unb2_board_tr := (2, 24, 3); -- per node: 2 buses with 24 channels
+  --CONSTANT c_unb2_board_tr_back              : t_c_unb2_board_tr := (2, 24, 3); -- per node: 2 buses with 24 channels
+  CONSTANT c_unb2_board_tr_back              : t_c_unb2_board_tr := (1, 24, 3); -- per node: 1 buses with 24 channels (testing)
   --CONSTANT c_unb2_board_tr_back              : t_c_unb2_board_tr := (2, 12, 3); -- per node: 2 buses with 24 channels (testing)
   --CONSTANT c_unb2_board_tr_back              : t_c_unb2_board_tr := (2, 4, 3); -- per node: 2 buses with 24 channels (testing)