Section 4: Sourcing and measuring Model 2601B-PULSE System SourceMeter Instrument Reference Manual
4-22 2601B-PULSE-901-01A April 2020
Figure 49: Noise shield
Using shielding and guarding together
The following figures show connections for a test system that uses a noise shield, a safety shield, and
guarding. The guard shields are connected to the driven guard of the SMU. The noise shield is
connected to LO. The safety shield is connected to the chassis and to protective earth
(safety ground).
Connect the enclosure of all metal test fixtures to protective earth (safety ground). See your
specific test fixture for information. Nonconductive test fixtures must be rated to double the
maximum capability of the test equipment in the system.
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