Interactive SourceMeter® Instrument Reference Manual Section 2:
2450-901-01 Rev. B/September 2013 2-85
Source-measure overview
Using the Model 2450, you can perform the following operations:
• Source voltage and measure current, voltage, resistance, or power
• Source current and measure voltage, current, resistance, or power
• Measure voltage, current, resistance, or power
Because many parameters you set are related to a specific function, make sure you select the
source and measure functions before you make changes to other instrument settings. The settings
options you have depend upon the active source and measure functions that are selected when you
make the changes. If you make a change that is not compatible with the active source and measure
functions, you may get unexpected results or you may receive an event message.
When you are making measurements, you can set the measurement range to a specific range or to
automatic ranging. If you select a specific range, for the best accuracy, use the lowest possible range.
When Auto is selected, the instrument selects the most sensitive range to make a measurement or
will change automatically as the measured value of the device changes.
The operating boundaries for the source-measure operations are provided in Operating boundaries
(on page 4-4).
Hazardous voltages may be present on all output and guard terminals. To prevent electrical
shock that could cause injury or death, never make or break connections to the Model 2450
while the instrument is powered on. Turn off the equipment from the front panel or
disconnect the main power cord from the rear of the Model 2450 before handling cables.
Putting the equipment into an output-off state does not guarantee that the outputs are
powered off if a hardware or software fault occurs.
Source and measure through the front panel
You can source and measure through the options available on the front panel.
Using One-Touch Quick Setups
The One-Touch Quick Setups allow you to select predefined setups. The options include
measurement choices that make measurements while sourcing a 0 value. The power supply option
sources a voltage without making a measurement.
The Quick Setup options that are available include Voltmeter, Ammeter, Ohmmeter, and Power
Supply.
For detail on the values that are set when you select these options, see QuickSet controls menu
(on
page 2-20).
When using the Model 2450 as a voltmeter, the voltage limit must be set higher than the voltage that
is being measured. Failure to do this could result in damage to the instrument because of excessive
current flow into the instrument.
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