The Tektronix VX4820 is a VXIbus-compatible digital test module that delivers programmable stimulus and response capabilities for complex digital circuit validation. It provides 32 or 64 independent TTL digital I/O channels operating at data rates up to 20 MHz, with real-time comparison logic that eliminates post-processing delays during high-speed test execution.
Technical Specifications
• Digital I/O Channels: 32 or 64 independent TTL pins
• Maximum Data Rate: 20 MHz
• Programmable Test Sequences: 16,351 distinct sequences
• Functional Modes: Drive, Inhibit, and Compare
• Branching Logic: Conditional and unconditional branching for dynamic test flow
• Real-Time Data Comparison: Built-in comparison eliminates external post-processing
– Key Features
• Test vectors programmed to control each I/O pin independently during execution
• Bidirectional bus system testing for complex signal validation
• Support for random and sequential logic pattern testing
• TTL-level digital signaling throughout
– Typical Applications
• Random and sequential logic circuit testing
• Bidirectional bus system validation
• High-density digital stimulus-response applications
• Automated test sequence execution with real-time decision logic
– Compatibility & Integration
The VX4820 integrates into VXIbus mainframe systems via standard P1 and P2 connectors, leveraging the VXIbus 4.0 open architecture for modular instrumentation. VXIbus systems deliver high-density channel capacity, increased throughput, and superior synchronization across test instruments. Module weight is approximately 5 lbs.
