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Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual
Figure 7-2
Logarithmic staircase sweep (example 5-point sweep from 1 to 10 volts)
Volts
The programmable parameters for a logarithmic sweep include the start and stop levels and the
number of measurement points for the sweep. The specified start, stop, and point parameters
determine the logarithmic step size for the sweep. Step size for the sweep in
calculated as follows:
Thus, the five logarithmic steps for this sweep are 0, 0.25, 0.50, 0.75, and 1.00. The actual voltage
bias levels at these points are listed in
logarithmic step).
6482-901-01 Rev. A / August 2012
Logarithmic
Scale
10
5.6234
3.1623
1.7783
Delay
1
X
Start
Bias
Measure
#1
logarithmic step size
Return to
Delay
Delay
X
Log
Delay
points = 5
X
Measure
Measure
#2
#3
X = Measurement point
log
(stop) - log
(start)
=
10
10
points - 1
log
(10) - log
(1)
10
10
=
5 - 1
1 - 0
=
4
=
0.25
Table 7-1
(the voltage bias level is the antilogarithm of the
Section Topics
Section 7: Sweep Operation
Delay
X
Stop
(10)
X
Measure
Measure
#4
#5
Figure 7-2
is
7-3
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