Model 6220/6221 Reference Manual Output Connections 2-19
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Banana Jack Guard connections
When using a low-impedance voltmeter to measure voltage, it may be necessary
to make the measurement at banana jack Guard (see Figure 2-16). Keep in mind
that banana jack Guard should only be used if voltmeter measurements at the
DUT will result in significant loading errors. Details on “Banana Jack Guard” are
provided on page 2-12.
Figure 2-16
Banana Jack Guard connections
Floating current source connections
When using an external source in the test circuit, it may be necessary to float the
Model 622x off Earth Ground (see Figure 2-17). Details on “Floating the current
source” are provided on page 2-13.
WARNING To prevent electric shock and/or damage to the Model 622x, DO
NOT exceed 250Vpk between Output Low and Earth Ground.
Above 42Vpk (30Vrms), a shock hazard exists between Output
Low and Chassis. A safety shield must surround the test circuit
and be connected to a safety Earth Ground (For details, see
“Safety shield connections,” on page 2-16.
High
Low
DUT
Output
622x
V
Low-Impedance
Voltmeter
Guard
Banana Plug Cable
* Boot color for alligator clip if using supplied triax cable.
Lo
(red)*
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
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