2400 Series SourceMeter
®
User’s Manual Sweep Operation 10-5
The programmable parameters for a log sweep include the start and stop levels and the
number of measurement points for the sweep. The specified start, stop, and point parame-
ters determine the logarithmic step size for the sweep. Step size for the sweep in Figure
10-2 is calculated as follows:
Thus, the five log steps for this sweep are 0, 0.25, 0.50, 0.75, and 1.00. The actual V-
Source levels at these points are listed in Table 10-1 (the V-Source level is the anti-log of
the log step).
When this sweep is triggered to start, the output will go from the bias level to the start
source level (1V) and sweep through the symmetrical log points. With trigger delay set to
zero, the time duration at each step is determined by the source delay and the time it takes
to perform the measurement (NPLC setting).
Custom sweep
This sweep type lets you configure a customized sweep. Programmable parameters
include the number of measurement points in the sweep and the source level at each point.
When this sweep is started, the output goes from the bias level to the first source-measure
point in the sweep. The sweep will continue through the source-measure points in the
order they were programmed and stop after the last source-measure point. With trigger
delay set to zero, the time duration at each step is determined by the source delay and the
time it takes to perform the measurement (NPLC setting). This delay is the same for all
sweep points.
Table 10-1
Logarithmic sweep points
Measure point Log step V-Source level (volts)
Point 1
Point 2
Point 3
Point 4
Point 5
0
0.25
0.50
0.75
1.0
1
1.7783
3.1623
5.6234
10
Log Step Size
log10(stop) log10(start)–
Points 1–
-------------------------------------------------------------=
log10(10) log10(1)–
51–
--------------------------------------------------=
10–()
4
----------------=
0.25=
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
Need help?
General
