diff --git a/libraries/dsp/fft/tb/vhdl/tb_tb_fft_r2_pipe.vhd b/libraries/dsp/fft/tb/vhdl/tb_tb_fft_r2_pipe.vhd
index 3efd0d0917221ec7c194f8916c34f543a0f8a585..ba5514038feb271e308a479e1a4e1959f447af46 100644
--- a/libraries/dsp/fft/tb/vhdl/tb_tb_fft_r2_pipe.vhd
+++ b/libraries/dsp/fft/tb/vhdl/tb_tb_fft_r2_pipe.vhd
@@ -53,6 +53,7 @@ ARCHITECTURE tb OF tb_tb_fft_r2_pipe IS
   -- Real input  
   CONSTANT c_impulse_chirp  : string := "data/run_pfft_m_impulse_chirp_8b_128points_16b.dat";          -- 25600 lines
   CONSTANT c_sinusoid_chirp : string := "data/run_pfft_m_sinusoid_chirp_8b_128points_16b.dat";         -- 25600 lines
+  CONSTANT c_sinusoid       : string := "data/run_pfft_m_sinusoid_8b_128points_16b.dat";               --   640 lines
   CONSTANT c_noise          : string := "data/run_pfft_m_noise_8b_128points_16b.dat";                  --  1280 lines
   CONSTANT c_dc_agwn        : string := "data/run_pfft_m_dc_agwn_8b_128points_16b.dat";                --  1280 lines
   -- Complex input  
@@ -104,9 +105,10 @@ BEGIN
   u_act_two_real_chirp    : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_two_real,               c_diff_margin, c_sinusoid_chirp, 25600, c_impulse_chirp, 25600, c_unused, 0, 25600, FALSE);
   u_act_two_real_a0       : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_two_real,               c_diff_margin, c_zero,           25600, c_impulse_chirp, 25600, c_unused, 0,  5120, FALSE);
   u_act_two_real_b0       : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_two_real,               c_diff_margin, c_sinusoid_chirp, 25600, c_zero,          25600, c_unused, 0,  5120, FALSE);
+  u_act_two_real_sinus    : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_two_real,               c_diff_margin, c_sinusoid,         640, c_zero,            640, c_unused, 0,   640, FALSE);
   u_rnd_two_real_noise    : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_two_real,               c_diff_margin, c_noise,           1280, c_dc_agwn,        1280, c_unused, 0,  1280, TRUE);
   u_rnd_two_real_channels : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_two_real_more_channels, c_diff_margin, c_noise,           1280, c_dc_agwn,        1280, c_unused, 0,  1280, TRUE);
-  
+
   -- Complex input data
   u_act_complex_chirp              : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_complex,                         c_diff_margin, c_unused, 0, c_unused, 0, c_phasor_chirp,  12800, 12800, FALSE);
   u_act_complex_channels           : ENTITY work.tb_fft_r2_pipe GENERIC MAP (c_fft_complex_more_channels,           c_diff_margin, c_unused, 0, c_unused, 0, c_phasor_chirp,  12800,  1280, FALSE);