Michael Scott

I need to generate a sine waveform to actuate a piezo transducer. No issues with setting the amplitude and frequency. The goal is to turn the piezo on and off multiple times ( 10 seconds on 10 seconds off x 10 cycles). There are two piezos that will be hooked up in parallel (each with their own channel) then sequentially (both on one channel) 

Run 1. Parallel 
a) Set amplitude. piezo 1 - 10 seconds on -> 10 seconds off -> 10 seconds on at a frequency of 27khz. Piezo 2 will have the same cycle however will turn on when piezo 1 turns off
B) same set up with piezos however each period will have varying amplitude. 

What is the best way to go about this? 

I originally went about this using a computer to trigger the AFG however this is not accurate and precise. I would like to have