Generate n sine waves and add them together

Hi
I'm new to Labview and I want to generate n number of sine waves and add them together to form one signal that can be out put through a DAQ card. Each successive wave frequency will be the multiple of a base wave all will be the same amplitude.
This to me suggested a For loop with a sig generator  and a passback in it but when I tried this it threw an error because the dt were different.
Any help will be appreciated.
Thanks

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    Sandeep Palreddy, Graduate Research Assistance
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