Test Fixture - Keithley 2601 Reference Manual

Series 2600 System SourceMeter® Instruments Reference Manual
Figure 3-22
Model 2636 connections for noise shield, safety shield, and guarding

Test fixture

A test fixture can be used for an external test circuit. The test fixture can be a metal or nonmetallic
enclosure, and is typically equipped with a lid. The test circuit is mounted inside the test fixture.
When hazardous voltages (>30Vrms, 42Vpeak) will be present, the test fixture must have the
following safety requirements:
WARNING
2600S-901-01 Rev. C / January 2008
To provide protection from shock hazards, an enclosure should be
provided which surrounds all live parts.
Nonmetallic enclosures must be constructed of materials suitably
rated for flammability and the voltage and temperature requirements of
the test circuit.
For metallic enclosures, the test fixture chassis must be properly
connected to safety earth ground. A grounding wire (#18 AWG or
larger) must be attached securely to the test fixture at a screw terminal
designed for safety grounding. The other end of the ground wire must
be attached to a known safety earth ground.
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Section 3: DUT Test Connections
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