2400 Series SourceMeter
®
User’s Manual Ohms Measurements 4-5
3. Select measurement range.
Use the RANGE and keys to select a range appropriate for the expected ohms
reading, or use autorange by pressing AUTO. When using manual ranging, select-
ing the most sensitive (lowest) range provides the best accuracy. Autorange auto-
matically goes to the most sensitive range.
4. Turn output on.
Turn the output on by pressing the ON/OFF OUTPUT key. The OUTPUT indicator
will turn on to indicate the output is on.
5. Observe reading on display.
The SourceMeter will go into compliance if you exceed the maximum ohms mea-
surement range.
6. Turn output off.
When finished, turn the output off by pressing the ON/OFF OUTPUT key. The
OUTPUT indicator light will turn off.
Manual ohms measurements
Perform the following steps to perform manual ohms measurements.
NOTE The following procedure assumes that the SourceMeter is already connected to
the DUT as explained in Section 2.
WARNING To prevent electric shock, do not make or break connections to the
SourceMeter with the output on. If on, press the ON/OFF OUTPUT
key to turn the output off.
1. Select ohms measurement function.
Press MEAS Ω to select the ohms measurement function.
2. Select manual ohms measurement method.
Select the manual ohms measurement method as follows:
• Press CONFIG then Ω.
• Select SOURCE, then press ENTER.
• Select MANUAL, then press ENTER.
• Press EXIT to return to normal display.
3. Configure source.
For manual ohms, you can Source I or Source V at the user-programmed output
level. The lowest allowable compliance limit is based on the load and the source
value. For example, if sourcing 1V to a 1kΩ resistor, the lowest allowable current
compliance is 1mA (1V/1kΩ = 1mA). Setting a limit lower than 1mA will place
the source in compliance. Refer to steps 1 and 2 of Section 3, “Basic source-
measure procedure,” to configure the source.
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