User manual

6-22 Source-Measure Concepts 2400 Series SourceMeter
®
User’s Manual
Source I measure I and source V measure V
The SourceMeter can measure the function it is sourcing. When sourcing a volt-
age, you can measure voltage. Conversely, if you are sourcing current, you can
measure the output current. For these measure source operations, the measure
range is the same as the source range.
This feature is valuable when operating with the source in compliance. When in
compliance, the programmed source value is not reached. Thus, measuring the
source lets you measure the actual output voltage. With the use of the TOGGLE
key, you can display the measurement of any two of the three functions (volts,
amps, and ohms) concurrently. For remote operation, you can measure all three
functions concurrently. (See Section 17 and Section 18.)
Source readback accuracy
SourceMeter measurement accuracy is better than sourcing accuracy (see the
source and measure specifications in Appendix A). For that reason, select the
same measurement and source functions, then use the measured value instead
of the programmed source value for optimum accuracy.