The Keithley 7154 High Voltage Scanner Card is a field-installable switching component for automated high-voltage test and measurement systems. It routes high-voltage signals within Keithley scanner mainframes, enabling precision switching in demanding test environments where complex signal paths and voltage isolation are critical. The card delivers 10 independent channels of 2-pole relay switching with fused protection on each pole, supporting peak voltages to 1100V and carrying currents to 1.0A RMS.
## Technical Specifications
• **Channels:** 10 per card (2-pole Form A configuration)
• **Maximum Switched Signal:** 1100V peak, 0.5A RMS, 10VA (resistive load), 10mA at 1000V
• **Maximum Carry Current:** 1.0A RMS
• **Contact Resistance:** <200 mΩ initial; 2 Ω to rated life
• **Contact Potential:** <35 µV per contact pair (copper leads)
• **Actuation Time:** 10¹⁰ Ω, 10⁹ Ω
• **Common Mode Voltage:** 1100V peak
• **Contact Life:** >10⁸ closures (cold switching); >5 × 10⁶ closures (maximum signal levels)
• **Connectors:** Screw terminals, #16 AWG maximum
• **Operating Temperature:** 0° to 50°C (up to 35°C at 70% R.H.)
• **Storage Temperature:** -25° to +65°C
• **Dimensions:** 32mm H × 114mm W × 272mm L
• **Weight:** 0.34 kg
## Key Features
• Double-pole, normally open relays with individual fused inputs on each pole
• User-selectable shield or driven guard configuration
• Common guard input applicable to all channels; isolation by jumper removal
• Multiple switched guards achievable via Low input terminal connection
• Fast relay actuation supports high-speed test sequences
• Excellent contact potential minimizes measurement errors in precision circuits
## Typical Applications
High-voltage signal routing, automated switching matrices for power testing, precision measurement multiplexing, and complex test routines requiring galvanic isolation and high voltage capability.
## Compatibility & Integration
Designed for Keithley scanner mainframes (Models 705, 706). Card operates in 2-pole mode when used alone or with other 10-channel cards. Field installation within compatible mainframe chassis.
