Tektronix KEITHLEY SourceMeter 2600B Series

Series 2600B System SourceMeter® instrument User's Manual Section 4: Operation
2600BS-900-01 Rev. A / August 2021 4-11
The FVR, shown in the following figure, isolates the SMUs from high frequencies that may be present
on the chassis of the 2600B. As frequencies on the chassis increase, the resistance of the FVR
increases to dampen its effects. For dc to 60 Hz, the FVR is a virtual short (0 ohms).
Figure 26: Models 2601B, 2602B, 2604B, 2611B, 2612B, and 2614B low-noise chassis ground
banana jack and chassis screw
1 Low-noise chassis ground banana jack
2 A local signal ground, which is the ow-noise chassis ground banana jack
3 Frequency variable resistor (FVR)
4 Metal chassis of the 2600B
5 Chassis screw terminal; connected to the metal chassis of the 2600B
Figure 27: Model 2634B and 2636B (Model 2635B similar)