Keithley 2600a series, Reference Manual, Page: 53 / 696

2600AS-901-01 Rev. B / September 2008 Return to Section Topics 2-5
Series 2600A System SourceMeter® Instruments Reference Manual Section 2: DUT Test Connections
Figure 2-4
Model 2636A input/output and chassis ground
Figure 2-5
Model 2602A/2612A Low-Noise Chassis Ground Banana Jack and Chassis Screw
FVR
Chassis
Series 2600A
Signal
Ground
Chassis
Signal Ground is a local signal ground and defined as
the Low-Noise Chassis Ground Banana Jack.
Chassis is defined as the metal chassis of the Series 2600.
1) Frequency Variable Resistor (FVR) – Isolates
the SMUs from high frequencies on the chassis.
For DC to 60Hz, the FVR is a virtual short (zero
ohms).
2) DO NOT use the Chassis Screw terminal to
make signal connections to external circuitry.
High frequency (>1MHz) on the chassis may
result in higher noise at the output.
Chassis Screw terminal is connected to the metal chassis of the
Series 2600.
1
Chassis
Screw 2
Low-Noise
Chassis Ground
Banana Jack
Signal
Ground