The Sequence function works with DC-INT, AC-
INT and AC+DC-INT modes with full AC 
waveforms containing sine, square, triangle as 
well as arbitrary. The available parameters, 
which will be introduced in later sectors, vary 
depending on selected output modes. 
A Sequence function is comprised of up to the 
maximum 999 steps.  
The Sequence function is comprised of a 
minimum of 2 steps that are executed in user 
defined sequences. 
Each step can have different step time, voltage 
level, start & stop phase, frequency and wave.