Section 2: General operation Model 2657A High Power System SourceMeter® Instrument Reference Manual
2-42 2657A-901-01 Rev. B/December 2012
Basic connections:
Remember the following when making or breaking connections:
• Power off the Model 2657A and all other instruments.
• Disconnect any devices that may deliver energy.
• Make connections to the DUT through a test fixture (on page 2-62) or other safe enclosure.
• Make sure that both the Model 2657A and the test fixture are properly connected to protective
earth (safety ground). Connecting the test fixture to protective earth is only required if the test
fixture is conductive. Make sure the test fixture provides proper protection.
• Properly make interlock connections between the Model 2657A, the test fixture, and any other
instruments. Do not defeat the interlock.
• Make sure to follow all WARNINGS and CAUTIONS and to take adequate safety precautions
associated with each connection scheme.
• Properly terminate any high-voltage triaxial cables (see High-voltage triaxial cable termination (on
page 2-44)); all cable ends that are not terminated with a connector must be within a safe
enclosure.
• See 2-wire local sensing connections (on page 2-45) and 4-wire remote sensing connections (on
page 2-47) for example connection schemes.
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