Figure 3-16; Safety Shield - Keithley 2601 Reference Manual

Section 3: DUT Test Connections

Safety shield

A safety shield must be used whenever hazardous voltages (>30Vrms, 42Vpeak) will be present in
the test circuit. The safety shield can be metallic or nonmetallic, and must completely surround the
DUT test circuit. A metal safety must be connected to a known safety earth ground and chassis
ground. See the section
use of a metal or nonmetallic enclosure.
Model 2601/2602 safety shield
The maximum output voltage for a Model 2601/2602 channel is 40V, which is considered a non-
hazardous level. However, using two or more Model 2601/2602 voltage sources in a series
configuration can cause test circuit voltage to exceed 42V. For example, the SMUs of two Model
2601/2602 instruments can be connected in series to apply 80V to a DUT (see
The connections for the test configuration in
wire or larger for connections to safety earth ground and chassis.
NOTE Floating an SMU may also cause test circuit voltage to exceed 42V

Figure 3-16

Safety shield for hazardous voltage using two 2601/2602 channels (>42V)
Figure 3-17
Model 2601/2602-1 connections for test circuit shown in
3-16
"Test fixture" later in this section for important safety information on the
(see "Floating a SMU" later in this section).
Return to Section Topics
Series 2600 System SourceMeter® Instruments Reference Manual
Figure 3-16 are shown in
Figure 3-16
Figure 3-16).
Figure 3-17. Use #18AWG
2600S-901-01 Rev. C / January 2008