Tektronix KEITHLEY 2600B Series

Series 2600B System SourceMeter® instrument Reference Manual Section 2: Sourcing and measuring
2600BS-901-01 Rev. F/August 2021 2-55
Figure 25: Decreasing logarithmic sweep
Solving for k and b provides the following formulas:
Where:
V
end
= The source value at the end point
V
start
= The source value at the start point
N
= The number of points in the sweep
A
= The asymptote value
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.