Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 4: Source-
measure considerations
2461-901-01 A/November 2015 4-11
Noise shield
Use a noise shield to prevent the introduction of unwanted signals into the test circuit. Low-level
signals may benefit from effective shielding. The metal noise shield surrounds the test circuit and
should be connected to LO, as shown.
Figure 151: Model 2461 rear-panel noise shield connections
Safety shield
A safety shield must be used whenever hazardous voltages (>30 V RMS, 42 V peak) will be
present in the test circuit. To prevent electrical shock that could cause injury or death,
never use the Model 2461 in a test circuit that may contain hazardous voltages without a
properly installed and configured safety shield.
The safety shield can be metallic or nonconductive, and must completely surround the DUT test
circuit. A metal safety shield must be connected to a known protective earth (safety ground). See Test
fixtures (on page 2-95) for important safety information on the use of a metal or a nonconductive
enclosure.

Keithley 2461 Specifications

General

Brand	Keithley
Model	2461
Category	Measuring Instruments
Language	English