2400 Series SourceMeter
®
User’s Manual Sweep Operation 10-7
Source memory sweep
For a source memory sweep, up to 100 setup configurations can be saved in memory.
When the sweep is performed, the setup at each memory point is recalled. This allows
multiple functions and math expressions to be used in a sweep. For example, the first point
in a source memory sweep may source voltage and measure current, the next point may
source current and measure voltage, the third point may source voltage and measure volt-
age, and the last point may use a math expression. This feature allows you to customize
each sweep point with specific instrument settings instead of being tied to one set of set-
tings for all sweep points.
Once source memory setups are saved and the sweep is initiated, the SourceMeter then
sequences through the setups very rapidly. This feature allows you to use the instrument as
a fast, automatic test sequencer.
NOTE NPLC caching can be used to speed up source memory sweeps. See Section 3,
“NPLC caching,” for details.
Sweep configuration
The user specifies the number of memory location points to sweep and where to start the
sweep. For example, you can specify a six point sweep that starts at memory location 98.
When the sweep is started, the setups at memory location points 98, 99, 100, 1, 2, and 3
are recalled. When sweeping past point 100, the sweep automatically wraps back to mem-
ory location point 1. The default and typical scenario is starting the source memory sweep
at location 1.
NOTE These and other components of the sweep are configured from the CONFIGURE
SWEEPS menu. See “Configuring and running a sweep” later in this section.
Setups are saved in battery backed-up memory, and they remain and can be
recalled even if the SourceMeter looses external power.
Saving and restoring source memory setups
Source memory setups are saved in memory and restored from the SAVESETUP
(SOURCE MEMORY) option of the MAIN MENU. (See Section 1, “Main menu.”)
NOTE Source memory setups are different from the power-on and user-defined setups,
which are programmed from the SAVESETUP (GLOBAL) MAIN MENU option.
See Section 1 for details.
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