Keithley 6220 DC User Manual

2-10 Output Connections Model 6220/6221 User’s Manual
Return to Section 2 topics
Basic connections
Basic connections can be used for low voltage (not greater than 30Vrms,
42Vpeak) testing where guarding and/or noise shielding are not required. Basic
connections to a DUT are shown in Figure 2-6. Use the connections shown in
Figure 2-6A if the inner shield of the triax connector is connected to Output Low.
Use the connections shown in Figure 2-6B if the inner shield is connected to
Cable Guard.
Figure 2-6
Basic connections to DUT
Shields and guarding
Noise shield connections
Figure 2-7 shows typical noise shielding for the two triax connector configurations.
A noise shield is used to prevent unwanted signals from being induced into the
test circuit. A test current below 1μA may benefit from effective shielding.
Typically, the metal noise shield surrounds the DUT and is connected to Output
Low.
High
Low
DUT
Output
High
Low
DUT
Output
622x
A) Inner shield connected to Output Low
622x
B) Inner shield connected to Cable Guard
(red*)
* Boot color for alligator clip if
using supplied triax cable.
(red*)
(black*)
(green*)
(Earth Ground)

Keithley 6220 DC Specifications

General

Brand	Keithley
Model	6220 DC
Category	AC Power Distribution
Language	English