System SourceMeter® Instrument Reference Manual  Section 3: 
 
2600BS-901-01 Rev. B / May 2013  3-25 
 
Solving for k and b provides the following formulas: 
   
Where: 
V
 
= The source value at the end point 
= The source value at the start point 
N 
= The number of points in the sweep 
 
 
The number of points in a sweep is one greater than the number of steps in the sweep. 
 
The following figure is an example of a five-point logarithmic sweep from 1 V to 10 V. 
 
Figure 58: Logarithmic staircase sweep (1V to 10V, five steps)