Keithley 7011C

The Keithley 7011-C is a quad 1×10 multiplexer switch card engineered for integration with Keithley 7001 and 7002 mainframes. It delivers 40 channels organized as four independent 1×10 2-pole banks, with configurable architectures ranging from dual 1×20 to single 1×40 2-pole multiplexers, or dual 1×10 to single 1×20 4-pole setups. Two 7011-C cards cascade to form a 1×80 multiplexer via mainframe backplane routing. The card connects to external circuits through a 96-pin male DIN mass-terminated connector and supports row expansion via integration with Keithley 7012 cards. Removable jumpers provide flexible bank isolation from the mainframe backplane.

Technical Specifications Switching Architecture

Four independent 1×10 2-pole multiplexer banks

Configurable as dual 1×20, 1×10 + 1×30, single 1×40, or dual/single 4-pole multiplexers

Two-card configuration yields 1×80 multiplexer capacity

Per-conductor channel resistance: < 1 Ω

Contact potential: < 1 µV per channel contact pair; < 3 µV typical single contact

Actuation time: 3 ms Electrical Performance

DC: 110 V maximum between any two pins, 1 A switched, 30 VA resistive load

AC: 125 V rms / 175 V peak between any two pins, 1 A switched, 60 VA resistive load

Common mode voltage: 175 V peak (any pin to chassis)

Offset current: 10⁹ Ω, 10⁹ Ω, < 50 pF

Key Features

Flexible architecture - combine banks into multiple multiplexer configurations without hardware changes

Low contact resistance and minimal contact potential for precision measurement integrity

Fast 3 ms actuation supports high-speed automated test sequences

Dual-card scaling enables 80-channel multiplexing on a single mainframe

Bank jumpers allow selective isolation for complex routing schemes

96-pin DIN connector simplifies external circuit termination

Compatibility & Integration The 7011-C integrates directly with Keithley 7001 and 7002 switch mainframes via the analog backplane. Outputs interface with Keithley 7012 cards for row expansion in larger matrix configurations. Intercard connections utilize the mainframe backplane, eliminating external wiring complexity.