Keithley 7706 Digital I/O Module 20-Channel Multiplexer

Keithley 7706 Digital I/O Module (20-Channel Multiplexer)

The Keithley 7706 is a high-versatility plug-in multiplexer module engineered to deliver elite operational performance for mixed-signal measurement and system control. By addressing the requirement for multi-functional switching, this module provides 20 channels of 2-pole or 10 channels of 4-pole multiplexing alongside two analog output channels and 16 digital outputs, effectively minimizing measurement uncertainty in complex automated test sequences. The metrological architecture of the 7706 ensures absolute traceability through automatic Cold Junction Compensation (CJC) and latching electromechanical relays, making it an ideal stimulus management tool for RTD, thermistor, and thermocouple applications.

Built for industrial longevity, the 7706 features an integrated event counter/totalizer for monitoring mechanical stimulus such as door closures, revolutions, and limit switches. Its technical sophistication is defined by low contact potential (<3µV) and high-density connectivity, allowing for the concurrent control of pass/fail indicators and external voltage sources. As a professional-grade metrology component for Keithley’s 2700 Series systems, the 7706 module offers a 300V, 1A capacity and on-board memory for relay closure storage, ensuring reliable data acquisition in rigorous production and laboratory environments.

Technical Specifications & Metrological Data

• Multiplexer Logic: 20 channels (2-pole) or 10 channels (4-pole) with automatic CJC.
• Extended I/O: 16 digital outputs, 2 analog outputs, and 1 dedicated event counter/totalizer.
• Metrological Precision: Typical contact potential < ±2µV with < 100pA offset current.
• Switching Capacity: Rated for 300V, 1A (60W or 125VA maximum stimulus).
• Relay Architecture: Latching electromechanical relays with < 1Ω end-of-life resistance.
• System Configuration: Dual independent bank configuration for flexible measurement routing.
• On-Board Intelligence: Integrated memory for storing relay closure states and configurations.