diff --git a/applications/lofar2/designs/lofar2_unb2b_sdp_station/tb/vhdl/tb_lofar2_unb2b_sdp_station.vhd b/applications/lofar2/designs/lofar2_unb2b_sdp_station/tb/vhdl/tb_lofar2_unb2b_sdp_station.vhd
index d3198bf0d2b4db7888cd4efed534c3cdc08ca31d..3c63f38cd1b46e389ec71d96f70af019f539ee1f 100644
--- a/applications/lofar2/designs/lofar2_unb2b_sdp_station/tb/vhdl/tb_lofar2_unb2b_sdp_station.vhd
+++ b/applications/lofar2/designs/lofar2_unb2b_sdp_station/tb/vhdl/tb_lofar2_unb2b_sdp_station.vhd
@@ -21,8 +21,14 @@
 -- Usage:
 --   > as 7    # default
 --   > as 12   # for detailed debugging
---   > run -a  
+--   > run -a  # takes about 250 us --> c_eth_runtime_timeout
 --
+-- Remark:
+-- - Only verify that there is statistics offload.
+-- - The statistics data gets undefined, due to that the c_nof_block_per_sync
+--   is too short to offload 12 SST packets via 1GbE. This causes that new
+--   data is available before the old data has been offloaded. Therefore use
+--   c_eth_check_nof_packets = 1 instead of S_pn = 12.
 -------------------------------------------------------------------------------
 LIBRARY IEEE, common_lib, unb2b_board_lib, i2c_lib, mm_lib, dp_lib, diag_lib, lofar2_sdp_lib, wpfb_lib, eth_lib;
 USE IEEE.std_logic_1164.ALL;
@@ -72,13 +78,15 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station IS
   CONSTANT c_wg_ampl_lsb                  : REAL := c_diag_wg_ampl_unit / c_full_scale_ampl;  -- amplitude in number of LSbit resolution steps
 
 -- . 1GbE output
-  CONSTANT c_eth_check_nof_packets        : NATURAL := 4512;  -- received packets in 2 sync periods
-  CONSTANT c_eth_runtime_timeout          : TIME := 100 ms;  -- factor 2 margin
+  CONSTANT c_eth_check_nof_packets        : NATURAL := 1;
+  CONSTANT c_eth_runtime_timeout          : TIME := 300 us;
   
   -- 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_bsn_scheduler_wg : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER";
   CONSTANT c_mm_file_reg_diag_wg          : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
+  CONSTANT c_mm_file_reg_stat_enable_sst  : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE_SST";
+  CONSTANT c_mm_file_reg_stat_hdr_dat_sst : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_HDR_DAT_SST";
 
   -- Tb
   SIGNAL tb_end               : STD_LOGIC := '0';
@@ -110,12 +118,12 @@ ARCHITECTURE tb OF tb_lofar2_unb2b_sdp_station IS
   SIGNAL pmbus_sda            : STD_LOGIC;
 
   -- back transceivers
-  SIGNAL JESD204B_SERIAL_DATA : STD_LOGIC_VECTOR((c_unb2b_board_tr_jesd204b.bus_w * c_unb2b_board_tr_jesd204b.nof_bus)-1 downto 0);
+  SIGNAL JESD204B_SERIAL_DATA : STD_LOGIC_VECTOR(c_sdp_S_pn-1 downto 0);
   SIGNAL JESD204B_REFCLK      : STD_LOGIC := '1';
 
   -- jesd204b syncronization signals
   SIGNAL jesd204b_sysref      : STD_LOGIC;
-  SIGNAL jesd204b_sync_n      : STD_LOGIC_VECTOR((c_unb2b_board_tr_jesd204b.nof_bus * c_unb2b_board_tr_jesd204b.bus_w)-1 DOWNTO 0);
+  SIGNAL jesd204b_sync_n      : STD_LOGIC_VECTOR(c_sdp_N_sync_jesd-1 DOWNTO 0);
 
 BEGIN
 
@@ -192,9 +200,7 @@ BEGIN
   tb_clk <= (NOT tb_clk) OR tb_end AFTER c_tb_clk_period/2;    -- Testbench MM clock
   
   p_mm_stimuli : PROCESS
-    CONSTANT c_mm_file_reg_stat_enable   : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE";
-    CONSTANT c_mm_file_reg_stat_hdr_info : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_HDR_INFO";
-    VARIABLE v_bsn                       : NATURAL;
+    VARIABLE v_bsn                          : NATURAL;
   BEGIN
     -- Wait for DUT power up after reset
     WAIT FOR 1 us;
@@ -235,7 +241,7 @@ BEGIN
     WAIT FOR c_sdp_T_sub * 2;
 
     -- Offload enable
-    mmf_mm_bus_wr(c_mm_file_reg_stat_enable, 0, 1, tb_clk);
+    mmf_mm_bus_wr(c_mm_file_reg_stat_enable_sst, 0, 1, tb_clk);
     
     -- End Simulation
     proc_common_wait_until_high(ext_clk, eth_done);
@@ -246,12 +252,10 @@ BEGIN
 
   -- >> Verify proper DUT output using Ethernet packet statistics <<
   u_eth_statistics : ENTITY eth_lib.eth_statistics
-    GENERIC MAP (
-      g_runtime_nof_packets => c_eth_check_nof_packets,
-      g_runtime_timeout     => c_eth_runtime_timeout,
-      g_check_nof_valid     => TRUE,
-      g_check_nof_valid_ref => c_eth_check_nof_packets
-    )
+  GENERIC MAP (
+    g_runtime_nof_packets => c_eth_check_nof_packets,
+    g_runtime_timeout     => c_eth_runtime_timeout
+  )
   PORT MAP (  
     eth_serial_in => eth_txp(0),
     tb_end        => eth_done
diff --git a/applications/lofar2/designs/lofar2_unb2c_sdp_station/tb/vhdl/tb_lofar2_unb2c_sdp_station.vhd b/applications/lofar2/designs/lofar2_unb2c_sdp_station/tb/vhdl/tb_lofar2_unb2c_sdp_station.vhd
index 5e4731f8efc4c1ec2c19ca601199af0f98a27a60..2129d701d1eddfa82e247b8c4ae31ef9a225cbf3 100644
--- a/applications/lofar2/designs/lofar2_unb2c_sdp_station/tb/vhdl/tb_lofar2_unb2c_sdp_station.vhd
+++ b/applications/lofar2/designs/lofar2_unb2c_sdp_station/tb/vhdl/tb_lofar2_unb2c_sdp_station.vhd
@@ -20,9 +20,15 @@
 -- Test statistics offload with "ethernet packet statistics" in wave window only
 -- Usage:
 --   > as 7    # default
---   > as 12   # for detailed debugging
---   > run -a  
+--   > as 14   # for detailed debugging of Eth sim tx link
+--   > run -a  # takes about 250 us --> c_eth_runtime_timeout
 --
+-- Remark:
+-- - Only verify that there is statistics offload.
+-- - The statistics data gets undefined, due to that the c_nof_block_per_sync
+--   is too short to offload 12 SST packets via 1GbE. This causes that new
+--   data is available before the old data has been offloaded. Therefore use
+--   c_eth_check_nof_packets = 1 instead of S_pn = 12.
 -------------------------------------------------------------------------------
 LIBRARY IEEE, common_lib, unb2c_board_lib, i2c_lib, mm_lib, dp_lib, diag_lib, lofar2_sdp_lib, wpfb_lib, eth_lib;
 USE IEEE.std_logic_1164.ALL;
@@ -72,13 +78,15 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station IS
   CONSTANT c_wg_ampl_lsb                  : REAL := c_diag_wg_ampl_unit / c_full_scale_ampl;  -- amplitude in number of LSbit resolution steps
 
 -- . 1GbE output
-  CONSTANT c_eth_check_nof_packets        : NATURAL := 4512;  -- received packets in 2 sync periods
-  CONSTANT c_eth_runtime_timeout          : TIME := 100 ms;  -- factor 2 margin
+  CONSTANT c_eth_check_nof_packets        : NATURAL := 1;
+  CONSTANT c_eth_runtime_timeout          : TIME := 300 us;
   
   -- 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_bsn_scheduler_wg : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_BSN_SCHEDULER";
   CONSTANT c_mm_file_reg_diag_wg          : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_WG";
+  CONSTANT c_mm_file_reg_stat_enable_sst  : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE_SST";
+  CONSTANT c_mm_file_reg_stat_hdr_dat_sst : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_HDR_DAT_SST";
 
   -- Tb
   SIGNAL tb_end               : STD_LOGIC := '0';
@@ -100,27 +108,29 @@ ARCHITECTURE tb OF tb_lofar2_unb2c_sdp_station IS
   SIGNAL INTA                 : STD_LOGIC;
   SIGNAL INTB                 : STD_LOGIC;
 
-  SIGNAL eth_clk              : STD_LOGIC := '0';
-  SIGNAL eth_clk_slv          : STD_LOGIC_VECTOR(c_unb2c_board_nof_eth-1 downto 0);
-  SIGNAL eth_txp              : STD_LOGIC_VECTOR(c_unb2c_board_nof_eth-1 downto 0);
-  SIGNAL eth_rxp              : STD_LOGIC_VECTOR(c_unb2c_board_nof_eth-1 downto 0);
+  SIGNAL eth_clk_slv          : STD_LOGIC_VECTOR(c_unb2c_board_nof_eth-1 downto 0) := (OTHERS => '0');
+  SIGNAL eth_txp_slv          : STD_LOGIC_VECTOR(c_unb2c_board_nof_eth-1 downto 0);
+  SIGNAL eth_rxp_slv          : STD_LOGIC_VECTOR(c_unb2c_board_nof_eth-1 downto 0);
 
   -- back transceivers
-  SIGNAL JESD204B_SERIAL_DATA : STD_LOGIC_VECTOR((c_unb2c_board_tr_jesd204b.bus_w * c_unb2c_board_tr_jesd204b.nof_bus)-1 downto 0);
+  SIGNAL JESD204B_SERIAL_DATA : STD_LOGIC_VECTOR(c_sdp_S_pn-1 downto 0);
   SIGNAL JESD204B_REFCLK      : STD_LOGIC := '1';
 
   -- jesd204b syncronization signals
   SIGNAL jesd204b_sysref      : STD_LOGIC;
-  SIGNAL jesd204b_sync_n      : STD_LOGIC_VECTOR((c_unb2c_board_tr_jesd204b.nof_bus * c_unb2c_board_tr_jesd204b.bus_w)-1 DOWNTO 0);
+  SIGNAL jesd204b_sync_n      : STD_LOGIC_VECTOR(c_sdp_N_sync_jesd-1 DOWNTO 0);
 
 BEGIN
 
   -- System setup
   ext_clk <= (NOT ext_clk) OR tb_end AFTER c_ext_clk_period/2;  -- External clock (200 MHz)
-  eth_clk <= (NOT eth_clk) OR tb_end AFTER c_eth_clk_period/2;  -- Ethernet ref clock (125 MHz)
-  JESD204B_REFCLK <= (NOT JESD204B_REFCLK) OR tb_end AFTER c_bck_ref_clk_period/2;  -- JESD sample clock (200MHz) 
 
-  eth_clk_slv <= (OTHERS => eth_clk);
+  -- Ethernet ref clock (125 MHz)
+  eth_clk_slv(0) <= (NOT eth_clk_slv(0)) OR tb_end AFTER c_eth_clk_period/2;
+  eth_clk_slv(1) <= '0';  -- not used
+
+  -- JESD sample clock (200MHz)
+  JESD204B_REFCLK <= (NOT JESD204B_REFCLK) OR tb_end AFTER c_bck_ref_clk_period/2;
 
   INTA <= 'H';  -- pull up
   INTB <= 'H';  -- pull up
@@ -156,8 +166,8 @@ BEGIN
 
     -- 1GbE Control Interface
     ETH_CLK              => eth_clk_slv,
-    ETH_SGIN             => eth_rxp,
-    ETH_SGOUT            => eth_txp,
+    ETH_SGIN             => eth_rxp_slv,
+    ETH_SGOUT            => eth_txp_slv,
 
     -- LEDs
     QSFP_LED             => open,
@@ -177,8 +187,6 @@ BEGIN
   tb_clk <= (NOT tb_clk) OR tb_end AFTER c_tb_clk_period/2;    -- Testbench MM clock
   
   p_mm_stimuli : PROCESS
-    CONSTANT c_mm_file_reg_stat_enable   : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_ENABLE";
-    CONSTANT c_mm_file_reg_stat_hdr_info : STRING := mmf_unb_file_prefix(c_unb_nr, c_node_nr) & "REG_STAT_HDR_INFO";
     VARIABLE v_bsn                       : NATURAL;
   BEGIN
     -- Wait for DUT power up after reset
@@ -220,7 +228,7 @@ BEGIN
     WAIT FOR c_sdp_T_sub * 2;
 
     -- Offload enable
-    mmf_mm_bus_wr(c_mm_file_reg_stat_enable, 0, 1, tb_clk);
+    mmf_mm_bus_wr(c_mm_file_reg_stat_enable_sst, 0, 1, tb_clk);
     
     -- End Simulation
     proc_common_wait_until_high(ext_clk, eth_done);
@@ -231,14 +239,12 @@ BEGIN
 
   -- >> Verify proper DUT output using Ethernet packet statistics <<
   u_eth_statistics : ENTITY eth_lib.eth_statistics
-    GENERIC MAP (
-      g_runtime_nof_packets => c_eth_check_nof_packets,
-      g_runtime_timeout     => c_eth_runtime_timeout,
-      g_check_nof_valid     => TRUE,
-      g_check_nof_valid_ref => c_eth_check_nof_packets
-    )
-  PORT MAP (  
-    eth_serial_in => eth_txp(0),
+  GENERIC MAP (
+    g_runtime_nof_packets => c_eth_check_nof_packets,
+    g_runtime_timeout     => c_eth_runtime_timeout
+  )
+  PORT MAP (
+    eth_serial_in => eth_txp_slv(0),
     tb_end        => eth_done
   );