Keithley 706 Scanner, 10-Card Capacity

The Keithley 706 Scanner is a modular switching mainframe for automated testing and data acquisition. It accommodates up to 10 plug-in scanner cards, delivering up to 100 2-pole channels at full capacity. IEEE-488 bus control enables programmed operation within ATE systems. The 706 supports daisy-chain expansion to four additional units, reaching 500 2-pole channels on a single IEEE address. Selectable scan rates span 10 milliseconds to 999.999 seconds. Fifteen internal programs configure addressing, settling time, relay setups, digital I/O control, date format, scan sequences, pole configurations, and master/slave operation. Front-panel controls manage scan sequences and rates. The unit features a battery-backed real-time clock for time-dependent procedures and operates in single-pass, continuous, and manual scan modes between selectable channels. Matrix configuration is supported with compatible matrix scanner cards.

– Technical Specifications

• Card Capacity: 10 plug-in scanner cards
• Maximum Channels: Up to 100 2-pole channels (full complement)
• Scan Rate: 10 milliseconds to 999.999 seconds (selectable)
• Scan Modes: Single-pass, continuous, manual (first to last channel selectable)
• Internal Programs: 15 accessible programs
• Matrix Operation: Supported with specific matrix scanner cards
• Real-Time Clock: Battery-backed for time-dependent procedures

– Key Features

• IEEE-488 bus interface for direct ATE integration
• Expandable via daisy-chaining up to 4 additional 706 units for 500 total 2-pole channels on single IEEE address
• 8-line digital I/O (input and output)
• External trigger input: >2 µsec negative-going TTL-compatible pulse
• Channel-ready output: >10 µsec negative-going TTL-compatible pulse upon settling completion
• Alarm output: >10 µsec negative-going TTL pulse at programmed time
• Flexible relay setup storage and recall

– Typical Applications

• Production and characterization testing requiring high-channel-count switching
• Thermocouple and low-voltage signal multiplexing
• Low-current matrix switching
• High-current switching applications
• Automated test sequences with time-dependent control

– Compatibility & Integration

The 706 accepts general-purpose relay cards, thermocouple cards, low-voltage scanner cards, low-current matrix scanner cards, and high-current switching cards. Card selection determines final channel count and signal type compatibility.