The Keithley 7012-S is a 4×10 matrix card for the 7001 and 7002 switch systems, delivering 2-pole Form A switching with screw terminal connectivity. It routes DC and AC signals across 40 crosspoints with exceptional contact integrity and minimal signal degradation, making it ideal for automated test systems requiring precision measurement and signal multiplexing.
## Technical Specifications
• **Matrix Configuration:** 4 rows × 10 columns (40 crosspoints)
• **Contact Configuration:** 2-pole Form A (Hi, Lo)
• **Connector Type:** Screw terminal; accepts #16 AWG maximum (0.092″ OD, 28 conductors max) or #22 AWG typical (0.062″ OD, 88 conductors max)
• **DC Signal Level:** 110 V DC between any two pins, 1 A switched, 30 VA resistive load
• **AC Signal Level:** 125 V RMS or 175 V AC peak between any two pins, 1 A switched, 60 VA resistive load
• **Common Mode Voltage:** 175 V peak, any pin to chassis
• **Contact Potential:** Less than 500 nV per contact pair (Hi, Lo); less than 1.5 µV typical per single contact
• **Offset Current:** Less than 100 pA
• **Channel Resistance:** Less than 1 Ω per conductor
• **Contact Life:** 10⁸ closures cold switching; 10⁵ closures at maximum signal levels
• **Actuation Time:** 3 ms
• **Isolation (Path):** Greater than 10⁹ Ω, less than 50 pF
• **Isolation (Differential):** Greater than 10⁹ Ω, less than 200 pF
• **Isolation (Common Mode):** Greater than 10⁹ Ω, less than 400 pF
• **Crosstalk:** Less than −40 dB at 1 MHz, 50 Ω load
• **Insertion Loss:** Less than 0.1 dB below 1 MHz; less than 3 dB below 2 MHz (50 Ω source and load)
• **Relay Drive Current:** 16 mA per relay
• **Operating Temperature:** 0°C to 50°C (up to 35°C < 80% RH)
• **Storage Temperature:** −25°C to 65°C
## Key Features
• Detachable connector card design for convenient screw terminal access
• Backplane jumpers enable row isolation from the analog backplane
• Dual-pole switching supports low-level measurement and signal routing
• Sub-microvolt contact potential for precision DC measurement systems
• Exceeds EN61010-1/IEC 1010 safety compliance and EU Directive 89/336/EEC (EMC)
## Compatibility & Integration
The 7012-S card plugs directly into Keithley 7001 and 7002 mainframes. Row connections to the analog backplane enable expansion to larger matrix configurations (4×20) or integration with the 7011 multiplexer card. An optional 7012-ST extra screw terminal connector card is available.
