4-10 Ohms Measurements 2400 Series SourceMeter
®
User’s Manual
Offset-compensated ohms procedure
NOTE The following procedure assumes that the desired ohms measurement method
(auto or manual) is already selected and the SourceMeter is connected to the
DUT as explained in Section 2. Refer to “Selecting ohms measurement method”
to check or change the measurement method.
1. Turn the output off and select the Ω measurement function.
2. Enable offset compensation as previously explained (“Enabling/disabling offset-
compensated ohms,” page 4-9).
NOTE If using the auto ohms measurement method, go to step 5.
3. For manual ohms measurements, configure the desired source (V or I) to output the
appropriate source level. Set compliance and select a measurement range (or use
AUTO range). See steps 1, 2, and 3 of Section 3, “Basic source-measure proce-
dure,” for details.
4. Turn the output on, and observe the offset-compensated ohms reading on the dis-
play. Note that the source alternates between the programmed output value and
zero but only one reading is displayed for each two-source cycle.
NOTE When the output is turned off, the displayed source value may be zero (0V or
0A). It will usually be the previously programmed value in Manual Ohms mode.
However, the programmed source value is remembered and used when the out-
put is turned back on. If a new source value is programmed, the SourceMeter
uses the new source value when the output is turned back on. The source value
cannot be changed while the output is on. If a global setup or source memory
location is saved, the previously programmed source value will always be
stored.
5. When finished, turn the output off, and disable offset-compensated ohms.
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