Keithley 3706A High Performance Digital Multimeter (DMM) with Six Slots - Keithley 3706A-S, The Keithley 3706A-S is a six slot system switch mainframe.
This mainframe unit contains six slots for plug-in cards in a compact 2U high enclosure that easily accommodates the needs of medium to high channel count applications.
When fully loaded, a mainframe can support up to 576 two-wire multiplexer channels or 2,688 one-pole matrix crosspoints for unrivalled density and economical per channel costs.
Keithley 3706A-S Six Slot System Switch for 3700A Series Switch/Multimeter