diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_adc/hdllib.cfg b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_adc/hdllib.cfg
index 405d49e9badd42bf2729bb8c3dc0dbd827c7ff9e..221a18c9fa1123fd006e781a3c175661eaa6c77f 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_adc/hdllib.cfg
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_adc/hdllib.cfg
@@ -66,7 +66,7 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bf_scale.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_monitor_input.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler_xsub.ip
+    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_sync_scheduler_xsub.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_source_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_crosslets_info.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_diag_data_buffer_bsn.ip
@@ -74,7 +74,6 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dpmm_data.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_selector.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_shiftram.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_sync_insert_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_xonoff.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_epcs.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_fpga_temp_sens.ip
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_bf/hdllib.cfg b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_bf/hdllib.cfg
index 30a3e73e3ff354cc93a870658dbc35883a503d5d..9a5cfb073c03c44841fcfc2bcd1a5b37b95e28ea 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_bf/hdllib.cfg
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_bf/hdllib.cfg
@@ -74,7 +74,7 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bf_scale.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_monitor_input.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler_xsub.ip
+    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_sync_scheduler_xsub.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_source_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_crosslets_info.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_diag_data_buffer_bsn.ip
@@ -82,7 +82,6 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dpmm_data.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_selector.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_shiftram.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_sync_insert_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_xonoff.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_epcs.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_fpga_temp_sens.ip
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_fsub/hdllib.cfg b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_fsub/hdllib.cfg
index 95e95a5df0cdd580a9596813c5dc43147b572de1..2e9b7490409b4ffe75da4c4c07654ee3a3317e8f 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_fsub/hdllib.cfg
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_fsub/hdllib.cfg
@@ -73,7 +73,7 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bf_scale.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_monitor_input.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler_xsub.ip
+    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_sync_scheduler_xsub.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_source_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_crosslets_info.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_diag_data_buffer_bsn.ip
@@ -81,7 +81,6 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dpmm_data.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_selector.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_shiftram.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_sync_insert_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_xonoff.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_epcs.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_fpga_temp_sens.ip
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_full/hdllib.cfg b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_full/hdllib.cfg
index 55e0af625cc4394681a6002faa68592fc2d60209..db33170b4fe7ab81d610a984a840dfdb135ee6a0 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_full/hdllib.cfg
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_full/hdllib.cfg
@@ -70,7 +70,7 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bf_scale.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_monitor_input.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler_xsub.ip
+    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_sync_scheduler_xsub.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_source_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_crosslets_info.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_diag_data_buffer_bsn.ip
@@ -78,7 +78,6 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dpmm_data.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_selector.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_shiftram.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_sync_insert_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_xonoff.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_epcs.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_fpga_temp_sens.ip
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/hdllib.cfg b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/hdllib.cfg
index c15743f6c693c88222d3f2db2d8659e9ab9c2653..1185fdc46bd686aa632a55b797a551836acc0112 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/hdllib.cfg
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/hdllib.cfg
@@ -73,7 +73,7 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bf_scale.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_monitor_input.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_scheduler_xsub.ip
+    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_sync_scheduler_xsub.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_bsn_source_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_crosslets_info.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_diag_data_buffer_bsn.ip
@@ -81,7 +81,6 @@ quartus_ip_files =
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dpmm_data.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_selector.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_shiftram.ip
-    $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_sync_insert_v2.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_dp_xonoff.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_epcs.ip
     $RADIOHDL_BUILD_DIR/unb2b/quartus/lofar2_unb2b_sdp_station/ip/qsys_lofar2_unb2b_sdp_station/qsys_lofar2_unb2b_sdp_station_reg_fpga_temp_sens.ip
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd
index a8e0635b63a96c82458a3f1efcd46c679643a3af..cef00a959f44a6bb15c1c6d5fc8c70edbc325092 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one.vhd
@@ -81,7 +81,8 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station_xsub_one IS
   CONSTANT c_nof_clk_per_sync    : NATURAL := c_nof_block_per_sync*c_sdp_N_fft; 
   CONSTANT c_pps_period          : NATURAL := c_nof_clk_per_sync;
   CONSTANT c_wpfb_sim            : t_wpfb := func_wpfb_set_nof_block_per_sync(c_sdp_wpfb_subbands, c_nof_block_per_sync);
-   
+  CONSTANT c_ctrl_interval_size  : NATURAL := c_nof_clk_per_sync;
+
   CONSTANT c_percentage          : REAL := 0.05;  -- percentage that actual value may differ from expected value
   CONSTANT c_lo_factor           : REAL := 1.0 - c_percentage;  -- lower boundary  
   CONSTANT c_hi_factor           : REAL := 1.0 + c_percentage;  -- higher boundary
@@ -111,7 +112,7 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station_xsub_one IS
   CONSTANT c_mm_file_reg_diag_wg            : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
   CONSTANT c_mm_file_ram_st_sst             : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_SST";
   CONSTANT c_mm_file_reg_crosslets_info     : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_CROSSLETS_INFO";
-  CONSTANT c_mm_file_reg_bsn_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER_XSUB";
+  CONSTANT c_mm_file_reg_bsn_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SYNC_SCHEDULER_XSUB";
   CONSTANT c_mm_file_ram_st_xsq             : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "RAM_ST_XSQ";
 
   -- Tb
@@ -285,8 +286,10 @@ BEGIN
     mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 0, c_bsn_start_wg, tb_clk);  -- first write low then high part
     mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_wg, 1,              0, tb_clk);  -- assume v_bsn < 2**31-1
     -- bsn_scheduler_xsub
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 0, c_bsn_start_wg, tb_clk);  -- first write low then high part
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 1,              0, tb_clk);  -- assume v_bsn < 2**31-1
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 1, c_ctrl_interval_size, tb_clk);  -- Interval size
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 2,       c_bsn_start_wg, tb_clk);  -- first write low then high part
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 3,                    0, tb_clk);  -- assume v_bsn < 2**31-1
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 0,                    1, tb_clk);  -- enable
 
     -- Wait for enough WG data and start of sync interval
     
diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd
index a3a44d2dc0893d3abfd2d7b6f3c4b426ca1fb190..723dd616251ae04fe207abe9e7c7e0e32723f92c 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/revisions/lofar2_unb2b_sdp_station_xsub_one/tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload.vhd
@@ -74,11 +74,12 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station_xsub_one_xst_offload IS
   CONSTANT c_nof_clk_per_sync    : NATURAL := c_nof_block_per_sync*c_sdp_N_fft; 
   CONSTANT c_pps_period          : NATURAL := c_nof_clk_per_sync;
   CONSTANT c_wpfb_sim            : t_wpfb := func_wpfb_set_nof_block_per_sync(c_sdp_wpfb_subbands, c_nof_block_per_sync);
+  CONSTANT c_ctrl_interval_size  : NATURAL := c_nof_clk_per_sync;
 
   -- MM  
   CONSTANT c_mm_file_reg_bsn_source_v2      : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SOURCE_V2";
   CONSTANT c_mm_file_reg_stat_enable_xst    : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE_XST";
-  CONSTANT c_mm_file_reg_bsn_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER_XSUB";
+  CONSTANT c_mm_file_reg_bsn_scheduler_xsub : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SYNC_SCHEDULER_XSUB";
 
   -- Tb
   SIGNAL tb_end              : STD_LOGIC := '0';
@@ -218,9 +219,10 @@ BEGIN
     ----------------------------------------------------------------------------
     -- Enable xsub
     ----------------------------------------------------------------------------
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 0, 1, tb_clk);  -- first write low then high part
-    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 1, 0, tb_clk);  -- assume v_bsn < 2**31-1
-    
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 1, c_ctrl_interval_size, tb_clk);  -- Interval size
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 2,                    1, tb_clk);  -- first write low then high part
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 3,                    0, tb_clk);  -- assume v_bsn < 2**31-1
+    mmf_mm_bus_wr(c_mm_file_reg_bsn_scheduler_xsub, 0,                    1, tb_clk);  -- enable
     ----------------------------------------------------------------------------
     -- Offload enable
     ----------------------------------------------------------------------------