Output voltage waveform + 3 DC voltages. How to set up the frequency?

[BigGun]

Hi there,

I am new to Labview and I am trying to do the following:

-Output an arbitrary voltage waveform (1000 samples/waveform) with ramp up-hold-ramp down. Setpoint amplitude and ramp (up-down) time are defined by the user. A constant frequency is also defined by the user.

+ 

-Three constant DC output voltages.

The thing that I am struggling with is the frequency of the waveform.

What do I have to do in order to set up a frequency of 50 Hz or any other value?

Additionally, how do I guarantee that the output waveform is continous?

Device: Keithley KUSB-3116

Any help will be very much appreciated. 

Regards.