3: Source-measure hardware Model 4200A-SCS Parameter Analyzer
3-10 4200A-901-01 Rev. C / February 2017
Source I measure I and source V measure V
The SMU can measure the function it is sourcing. When sourcing a voltage, you can also measure
voltage. However, if you are sourcing current, you can also measure the output current. For these
measure source operations, the measure range is always the same as the source range.
This feature is valuable when operating with the source in compliance, or when additional overall
accuracy is desired. When in compliance, the programmed source value is not reached. Thus,
measuring the source lets you measure the actual output voltage.
SMU terminals and connectors
The locations and configuration of the 4200-SMU and 4210-SMU terminals are shown in the next
figure. Basic information about these terminals is summarized below. Refer to the
Basic source-
measure connections (on page 2-1) topic for additional information regarding SMU signal
connections.
Exposure to electrical shock could result in personal injury or death, therefore, precautions
must be taken to prevent a shock hazard by surrounding the test device and any
unprotected leads (wiring) with double insulation for 250 V, Category O. See IEC 61010-1
safety standards for details. When connecting to the 4200A-SCS SMU outputs, make sure to
use devices and cables that have ratings for the sourced voltages. Otherwise, they will not
properly insulate the external connections to the instrument and pose a shock hazard. SMU
and preamplifier terminals should be considered hazardous even if the outputs are
programmed to be low voltage.
The maximum allowed voltage between COMMON and chassis ground is ±32 V DC.
Figure 41: 4200-SMU and 4210-SMU connectors
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