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.