Keithley 2635 Reference Manual

2600S-901-01 Rev. C / January 2008 Return to Section Topics 3-13
Series 2600 System SourceMeter® Instruments Reference Manual Section 3: DUT Test Connections
Figure 3-11
B LO A LO
Guard
CHANNEL B
HISense
HI
LO Sense
LO
Guard
CHANNEL A
HI
Sense
HILO
Sense
LO
DUT
>1GΩ
GND
Guard
LO HI
LO HI
Floating
GND
Model 2636 high-impedance guarding (floating)
Figure 3-12
Model 2636 High-impedance guarding (non-floating)
Noise shield
A noise shield (see Figure 3-13) is used to prevent unwanted signals from being induced into the
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
Figure 3-13.

Keithley 2635 Specifications

General

Brand	Keithley
Model	2635
Category	Measuring Instruments
Language	English