Model 6220/6221 User’s Manual Output Connections 2-11
Return to Section 2 topics
Figure 2-7
Noise shield
Safety shield connections
A safety shield must be used whenever hazardous voltages (>30Vrms, 42Vpeak)
will be present. The metal safety shield must completely surround DUT test cir-
cuitry and must be connected to a known Safety Earth Ground and Chassis (see
Figure 2-8). Use #18AWG wire or larger for connections.
Figure 2-8
Safety shield
Cable Guard connections
Triax Cable Guard is used to provide guarding for the triax cable and can be
extended all the way to the DUT at a metal guard plate. Connections for Cable
Guard are shown in Figure 2-9.
High
Low
DUT
Output
Metal Noise Shield
High
Low
DUT
Output
Metal Noise Shield
622x
622x
(red*)
(black*)
(red*)
(green*)
* Boot color for alligator clip if
using supplied triax cable.
A) Inner shield connected to Output Low B) Inner shield connected to Cable Guard,
Output Low connected to earth ground
(Earth Ground)
Earth Ground
High
Low
DUT
Output
Safety
Earth
Ground
Metal
Safety
Shield
High
Low
DUT
Output
Safety
Earth
Ground
Metal
Safety
Shield
Chassis
Screw
622x
622x
(red*)
(black*)
(red*)
(green*)
(green*)
* Boot color for alligator clip if
using supplied triax cable.
A) Inner shield connected to Output Low B) Inner shield connected to Cable Guard,
Output Low connected to earth ground
(Earth Ground)
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