The Keithley 7164 is a 20-channel scanner module card designed for integration into Keithley switch systems. It provides modular signal routing and switching capability for automated test and data acquisition applications. The 7164 uses 2-pole Form A relay architecture with common guard/shield connections, available in dry reed (7164-D) or mercury wetted reed (7164-M) configurations. This card delivers low-noise switching performance suitable for precision measurement environments requiring reliable multi-channel signal control.
Technical Specifications
Switching Architecture
• 20 independent channels
• 2-pole Form A configuration with common guard/shield connection
• Contact resistance: <1Ω at end of contact life
• Contact potential: <±500nV typical per contact; 1µV maximum; <±500nV typical per contact pair; 1µV maximum
• Offset current: 10¹⁰Ω, 10⁹Ω, <200pF
• Cross talk at 10MHz with 50Ω load: <–40dB
• Insertion loss (50Ω source and load): <0.1dB below 1MHz; <3dB below 2MHz
• Common mode voltage rating: 300V between any terminal and chassis
Physical Interface
• Screw terminal connections rated for #20 AWG wire size
– Key Features
• Ultra-low contact potential minimizes measurement errors in sensitive applications
• Exceptional inter-channel isolation prevents signal crosstalk
• Dual relay technology options address varying reliability and cost requirements
• Guarded switching topology protects sensitive analog signals
• Compliant with precision DC and low-frequency AC switching requirements
– Typical Applications
• Multi-channel data acquisition systems
• Automated test equipment for component characterization
• Precision analog signal switching and routing
• Low-level signal measurement and control
– Compatibility & Integration
The 7164 integrates with Keithley switch system mainframes via direct module insertion. Screw terminal connections simplify wiring integration into existing test racks.
