The Keithley 7012-S is a 4×10 matrix switching card delivering two-pole, dual-matrix expansion for the Keithley 7001 and 7002 switch mainframes. This screw-terminal card routes signals with minimal contact potential and offset current, making it ideal for precision analog switching in test systems requiring low-noise signal integrity.
## Technical Specifications
**Matrix & Switching**
• Configuration: 4 rows × 10 columns
• Contact type: 2-pole Form A (Hi, Lo)
• Channel resistance: < 1 Ω per conductor
• Actuation time: 3 ms
• Relay drive current: 16 mA per relay
**Signal Handling**
• DC signals: 110 V DC, 1 A switched; 30 VA resistive load maximum
• AC signals: 125 V RMS or 175 V AC peak, 1 A switched; 60 VA resistive load maximum
• Common mode voltage: 175 V peak (any pin to chassis)
• Contact potential: < 500 nV per contact pair
• Offset current: 10⁹ Ω, 10⁹ Ω, 10⁹ Ω, < 400 pF
• Crosstalk at 1 MHz (50 Ω load): < -40 dB
• Insertion loss: < 0.1 dB below 1 MHz; < 3 dB below 2 MHz (50 Ω source/load)
**Reliability**
• Cold switching contact life: 10⁸ closures
• Contact life at maximum signal levels: 10⁵ closures
**Connectors & Wiring**
• Screw terminal connections support #16 AWG maximum (0.092 inch O.D., up to 28 conductors) or #22 AWG typical (0.062 inch O.D., up to 88 conductors)
**Environmental**
• Operating: 0°C to 50°C, up to 35°C < 80% RH
• Storage: -25°C to 65°C
• EMC: EU Directive 89/336/EEC
• Safety: EU Directive 73/23/EEC (EN61010-1/IEC 1010)
## Key Features
• Low contact potential and offset current minimize measurement errors in sensitive analog circuits
• Flexible wiring options via screw terminals for direct circuit integration
• High isolation and low crosstalk ensure signal fidelity in multi-channel test setups
• Substantial contact life under cold-switch conditions supports high-volume test applications
## Typical Applications
• Precision analog signal routing and multiplexing
• Multi-channel data acquisition and test automation
• Matrix expansion in automated test equipment (ATE)
## Compatibility & Integration
Integrates with Keithley 7001 and 7002 switch mainframes. Rows connect to the analog backplane for matrix expandability. Compatible with Keithley 7011 multiplexer card for row expansion.
