diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_0.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_0.hex
new file mode 100644
index 0000000000000000000000000000000000000000..5edea8e39f6c590d953666a9bfda898073badcdd
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_0.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_1.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_1.hex
new file mode 100644
index 0000000000000000000000000000000000000000..45ec9087243ad9e3d4c770821d95e891cc941980
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_1.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_2.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_2.hex
new file mode 100644
index 0000000000000000000000000000000000000000..52c6bf83ef17e1b33c6ddfa56d85ba299bfe381e
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_2.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_3.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_3.hex
new file mode 100644
index 0000000000000000000000000000000000000000..05fcfecb6088a91c0db33e7b9b7e9ef18be24e96
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn0_3.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_0.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_0.hex
new file mode 100644
index 0000000000000000000000000000000000000000..bf03ea8030993598ac76bb82500dadeb4cc53830
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_0.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_1.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_1.hex
new file mode 100644
index 0000000000000000000000000000000000000000..c5d589edb5727b80e2a71b3527152acbaf70513f
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_1.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_2.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_2.hex
new file mode 100644
index 0000000000000000000000000000000000000000..61aba45901e9ea13732758c53825be25b4000909
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_2.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_3.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_3.hex
new file mode 100644
index 0000000000000000000000000000000000000000..c574559e78263ca1ae1b1cc116216260312cf28b
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn1_3.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_0.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_0.hex
new file mode 100644
index 0000000000000000000000000000000000000000..f4d72160bb8848d775762cb5c4f7dcc75459b3da
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_0.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_1.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_1.hex
new file mode 100644
index 0000000000000000000000000000000000000000..db53e757576b72c05985ede3b231f14fa24e1d4d
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_1.hex
@@ -0,0 +1,129 @@
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diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_2.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_2.hex
new file mode 100644
index 0000000000000000000000000000000000000000..9e941da2756970fb7eee230a6c324aa2be6fd13c
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_2.hex
@@ -0,0 +1,129 @@
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+:02006600E706AB
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+:02006800FA108C
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+:02006A0003DBB6
+:02006B0001DBB7
+:02006C0035FC61
+:02006D0035F963
+:02006E00FD0390
+:02006F00FD048E
+:02007000FF0B84
+:02007100000B82
+:02007200EF039A
+:02007300EF0498
+:02007400F40195
+:02007500F40293
+:0200760000FC8C
+:0200770000FC8B
+:0200780002057F
+:0200790002057E
+:02007A00130071
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+:02007C00FE067E
+:02007D00FE067D
+:02007E001C71F3
+:02007F00226FEE
+:00000001FF
diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_3.hex b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_3.hex
new file mode 100644
index 0000000000000000000000000000000000000000..f6f91a212755e11fce90b0c08f5fecf4d517ea58
--- /dev/null
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/hex/bg_data_fn2_3.hex
@@ -0,0 +1,129 @@
+:02000000286D69
+:020001002D6B65
+:020002000503F4
+:020003000503F3
+:02000400F10AFF
+:02000500F10BFD
+:020006000005F3
+:020007000105F1
+:02000800FDFDFC
+:02000900FDFDFB
+:02000A000BFBEE
+:02000B000BFAEE
+:02000C0010F9E9
+:02000D0010F8E9
+:02000E000708E1
+:02000F000808DF
+:020010000401E9
+:020011000401E8
+:02001200D11902
+:02001300D31CFC
+:02001400E9E41D
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+:020016000E0AD0
+:020017000F09CF
+:0200180018F7D7
+:0200190018F6D7
+:02001A001AE9E1
+:02001B0018E7E4
+:02001C000DF1E4
+:02001D000DF0E4
+:02001E001F2D94
+:02001F00212C92
+:0200200028F5C1
+:0200210028F2C3
+:02002200FBEFF2
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+:0200250002F9DE
+:0200260021CCEB
+:020027001FCAEE
+:02002800F818C6
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+:02006F00FE048D
+:02007000000B83
+:02007100000B82
+:02007200EF0598
+:02007300EF0696
+:02007400F40393
+:02007500F40392
+:0200760000FC8C
+:0200770000FC8B
+:0200780003057E
+:0200790003047E
+:02007A0012FE74
+:02007B0012FD74
+:02007C00FE067E
+:02007D00FF067C
+:02007E00286DEB
+:02007F002D6BE7
+:00000001FF
diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/python/gen_hex_files_block_gen.py b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/python/gen_hex_files_block_gen.py
index 70c16d448d45ab90a2d3ffb8fb02e2da25618dad..8ca1e2232528fdfa87d75d5075f993d03982f93c 100644
--- a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/python/gen_hex_files_block_gen.py
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/python/gen_hex_files_block_gen.py
@@ -66,7 +66,7 @@ x = np.linspace(0.0, N*T, N)
 AMPL_MAX = 127
 CHANNELS = [1,5,12,17,21,25,28,34,41,47,54,55,60]
 NOF_CHANNELS = len(CHANNELS)
-
+input_signals_concat_inter
 input_signals = []
 for input_signal_nr in range(NOF_INPUT_SIGNALS):
     phase_shift_deg = input_signal_nr
diff --git a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/vhdl/apertif_unb1_fn_bf_emu.vhd b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/vhdl/apertif_unb1_fn_bf_emu.vhd
index 6b58009ef865be86313ea9865f3f7977d1267b36..65be046d3384996810d66ae7dcd3ce311519d835 100644
--- a/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/vhdl/apertif_unb1_fn_bf_emu.vhd
+++ b/applications/apertif/designs/apertif_unb1_fn_bf_emu/src/vhdl/apertif_unb1_fn_bf_emu.vhd
@@ -23,6 +23,7 @@ USE IEEE.STD_LOGIC_1164.ALL;
 USE IEEE.NUMERIC_STD.ALL;
 USE common_lib.common_pkg.ALL;
 USE common_lib.common_mem_pkg.ALL;
+USE common_lib.common_str_pkg.ALL;
 USE common_lib.common_field_pkg.ALL;
 USE common_lib.common_network_layers_pkg.ALL;
 USE common_lib.common_interface_layers_pkg.ALL;
@@ -206,10 +207,10 @@ BEGIN
     g_nof_streams        => 4,
     g_buf_dat_w          => 16,
     g_buf_addr_w         => ceil_log2(2*64),
-    g_file_name_prefix   => "hex/bg_data",
-    g_diag_block_gen_rst => c_bg_ctrl
-  )
-  PORT MAP (
+    g_file_name_prefix   => "hex/bg_data_fn" & int_to_str(g_sim_node_nr), -- In simulation: FN0: bg_data_fn0_0..3
+    g_diag_block_gen_rst => c_bg_ctrl      --                                   FN1: bg_data_fn1_0..3
+  )                                        --                                   FN2: bg_data_fn2_0..1
+  PORT MAP (                               --                    In hardware:   FN0,FN1,FN2: bg_data_fn#_0..3 files are renamed after synth, MIF update, assembler re-run. Same results. 
     mm_rst           => mm_rst,
     mm_clk           => mm_clk,
   
@@ -268,7 +269,7 @@ BEGIN
   u_tr_10GbE: ENTITY tr_10GbE_lib.tr_10GbE
   GENERIC MAP(
     g_sim             => g_sim,
-    g_sim_level       => 0,
+    g_sim_level       => 1,
     g_nof_macs        => c_nof_10GbE_offload_streams,
     g_use_mdio        => TRUE,
     g_tx_fifo_fill    => c_pkt_len, 
@@ -421,6 +422,7 @@ BEGIN
   u_ctrl : ENTITY unb1_board_lib.ctrl_unb1_board
   GENERIC MAP (
     g_sim                     => g_sim,
+    g_sim_flash_model         => FALSE,
     g_design_name             => g_design_name,
     g_design_note             => g_design_note,
     g_stamp_date              => g_stamp_date,