FPGA interfacing with ADA_THDB

Hello,

Iam trying to interface the ADA board with my cyclone 3 starter kit. I want to view my led output on the oscilloscope. So i have identified the HSMC connections . I can track the signals on my ADA board at the D/A chip pins using my multimeter but the chip output IOUT A does not show any variation. It is stable at a particular voltage.

this is my code entity: and its corresponding assignments:

Clk : in std_logic;

--led_cathode : out std_logic;

--hsmclk_ou std_logic;

--da_mode,da_wrta,da_da7ut std_logic;

DAC_MODEut std_logic;

DAC_CLK_A,DAC_CLK_But std_logic;

DAC_WRT_A,DAC_WRT_But std_logic;

ouut std_logic;

k: out std_logic_vector(1 to 4);

OSC_SMA_ADC4:in std_logic ;

SMA_DAC4:in std_logic ;

poweron: out std_logic

architecture ar of testing is

constant max_count : natural := 40;

constant m_count : natural := 50000000 ;

signal Rst_n : std_logic;

signal q:std_logic_vector(1 to 4):="0001";

signal led_anode:std_logic;

signal clk_1,clk_2:std_logic:='0';

begin

-- my dac configurations, now ill show u the pin assignments

DAC_CLK_A <=clk_2;

DAC_CLK_B<=clk_2;

DAC_MODE<='1';-- dual mode

DAC_WRT_A<=clk_1;

DAC_WRT_B<=clk_1;

poweron<='0';

Thanks in advance!