Source I Measure I And Source V Measure V; Smu Terminals And Connectors - Keithley 4200A-SCS Reference Manual

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Section 3: Source-measure hardware

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.

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

measure connections

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.

(on page 2-1) topic for additional information regarding SMU signal

Figure 41: 4200-SMU and 4210-SMU connectors

Model 4200A-SCS Parameter Analyzer Reference Manual

4200A-901-01 Rev. C / February 2017

Basic source-