Section 4: Operation
Series 2600B System SourceMeter® instrument User's Manual
4-22
2600BS-900-01 Rev. A / August 2021
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 (labeled G or GUARD, depending on
your model) 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.
Figure 36: Connections for noise shield, safety shield, and guarding
1
Test circuit
2
Metal guard shield
3
Metal noise shield
4
Metal safety shield
5
Protective earth (safety ground)
6
Low-noise chassis ground banana jack
7
Chassis screw
8
Chassis
