diff --git a/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd b/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd
index db5a0922e739a0ff5d873df54fe946cb85492438..ba6961d74ffe2ad8255920e4e12b761f33c8ac17 100644
--- a/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd
+++ b/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd
@@ -48,10 +48,10 @@ USE work.sdp_pkg.ALL;
 
 ENTITY tb_sdp_statistics_offload IS
   GENERIC (
-    g_statistics_type          : STRING := "SST";
+    g_statistics_type          : STRING := "XST";
     g_offload_time             : NATURAL := 500;
     g_beamset_id               : NATURAL := 0;
-    g_P_sq                     : NATURAL := c_sdp_P_sq
+    g_P_sq                     : NATURAL := 1 --c_sdp_P_sq
   );
 END tb_sdp_statistics_offload;
 
@@ -326,6 +326,9 @@ BEGIN
         REPORT "wrong sdp_block_period" SEVERITY ERROR;
       
       -- Check variable header info.
+      ASSERT rx_hdr_fields_raw(field_hi(c_sdp_stat_hdr_field_arr, "sdp_integration_interval") DOWNTO field_lo(c_sdp_stat_hdr_field_arr, "sdp_integration_interval")) = TO_UVEC(c_nof_block_per_sync, 24)
+        REPORT "wrong sdp_integration_interval" SEVERITY ERROR;
+
       IF g_statistics_type = "SST" THEN
         ASSERT rx_hdr_fields_raw(field_hi(c_sdp_stat_hdr_field_arr, "sdp_data_id") DOWNTO field_lo(c_sdp_stat_hdr_field_arr, "sdp_data_id")) = TO_UVEC(rx_block_cnt + c_sdp_S_pn * gn_index, 32)
                 REPORT "wront SST sdp_data_id" SEVERITY ERROR;