Keithley 2651A Reference Manual page 77

High power system sourcemeter instrument

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Model 2651A High Power System SourceMeter® Instrument Reference Manual

The safety shield can be metallic or nonmetallic, and must completely surround the DUT test circuit. A

metal safety shield must be connected to a known safety earth ground and chassis ground. See

(on page 2-57) later in this section for important safety information on the use of a metal or

nonmetallic enclosure.

Model 2651A safety shield

The maximum output voltage for a Model 2651A channel is 40 V, which is considered a

nonhazardous level. However, using two Model 2651A voltage sources in a series configuration or

floating a SMU

the source-measure units (SMUs) of two Model 2651A instruments can be connected in series to

apply 80 V to a device under test (DUT) (see

on using multiple Model 2651A).

Use #18 AWG wire or larger for connections to safety earth ground and chassis.

Figure 21: Safety shield for hazardous voltage using two Model 2651A instruments

2651A-901-01 Rev. A / March 2011

(on page 2-58) can cause test circuit voltage to exceed 42 V. In the following figure,

Model 2651A (master)

(subordinate)

TSP advanced features

Model 2651A (subordinate)

40V, 50A MAX.

Section 2: General operation

(on page 6-53) for information

40V, 50A MAX.

Metal safety shield

Troubleshooting