Noise Shield - Keithley 2601 Reference Manual

Series 2600 System SourceMeter® Instruments Reference Manual
Figure 3-11
Model 2636 high-impedance guarding (floating)
Sense CHANNEL B
HI
Figure 3-12
Model 2636 High-impedance guarding (non-floating)

Noise shield

A noise shield (see
test circuit. Low level signals may benefit from effective shielding. The metal noise shield
surrounds the test circuit and should be connected to SMU LO as shown in
2600S-901-01 Rev. C / January 2008
Guard
HI LO Sense
LO
B LO
Figure 3-13) is used to prevent unwanted signals from being induced into the
Return to
Sense
LO LO HI
A LO
GND
LO
Floating
LO
DUT
>1GΩ
Section Topics
Section 3: DUT Test Connections
Sense
CHANNEL A HI
Guard
GND
HI
Guard
HI
Figure 3-13.
3-13