Keithley 3761 User Manual page 14

Model 3761 10-Channel Low Current Multiplexer Card User's Manual Section 3: General operation
The 3761 is designed for scanning low-ampere currents into a low-impedance picoammeter. When a
channel is not selected for measurement, the current path is maintained through that channel's
analog grounding relay, which is automatically updated with the channel selection.
You can also configure the 3761 for voltage switching. See the next figure for a schematic of the 3761
card configured for voltage mode.
Figure 5: 3761 voltage switching schematic
3761-900-01 Rev. B / January 2018 3-3