When using sine, square, triangle or ramp waveforms, 
0˚ is the point where the waveforms are at zero volts. 
0˚ is the starting point of a waveform. For sine, square 
or Triangle, Ramp waveforms, 0˚ is at 0 volts 
(assuming there is no DC offset).  
Burst Phase is used for both N cycle and Gated burst 
modes. In gated burst mode, when the Trigger INPUT 
signal goes low the output is stopped after the current 
waveform is finished. The voltage output level will 
remain equal to the voltage at the starting burst 
phase.