Keithley 2601 Reference Manual page 108

Section 3: DUT Test Connections
As shown, there is a low-noise chassis ground banana jack that can be used as a common signal
ground point for Input/Output LOs. This low-noise signal ground banana jack is connected to the
chassis through a Frequency Variable Resistor (FVR).
The FVR (see
on the chassis of the Series 2600. As frequencies on the chassis increase, the resistance of the
FVR increases to dampen its effects.
NOTE Keep in mind that the chassis should never be used as a ground
Figure 3-3
Model 2602/2612 input/output LO and chassis ground
S G G
HI
CHANNEL B
Model 2636 input/output and chassis ground
3-4
Figure 3-4) is used to isolate the SMUs from high frequencies that may be present
point for signal connections. High frequencies present on the chassis
of the Series 2600 may result in higher noise. The chassis should
only be used as a safety shield. Use the chassis screw for
connections to the chassis of the Series 2600.
For Model 2636, connect to ground on the ground module not to the
chassis screw.
Channel B
G HI G S LO
LO
HI = Input/Output HI
S HI = Sense HI
G = Guard
S LO = Sense LO
LO = Input/Output LO
Return to
Series 2600 System SourceMeter® Instruments Reference Manual
Channel A
CHANNEL A
S
LO LO G HI G G
Captive screw (2 per terminal block)
Each terminal block uses two captive
screws to secure it to the rear panel.
Section Topics
terminals
S
G HI
2600S-901-01 Rev. C / January 2008