The Aeroflex/Tektronix/CDS 53A-516 Digital Input/Analog Comparator Card combines digital input and analog comparison functions on a single module for data acquisition and signal processing. Designed for the CDS 53/63 Series modular instrumentation platform, this card delivers TTL-compatible digital I/O with selectable logic polarity and integrates analog comparator capability for precision signal monitoring in complex test systems.
– Technical Specifications
Digital Input
• TTL logic levels with switch-selectable high or low true configuration
• Data Accept Line: TTL output, switch-selectable polarity with 2.8 µs response time and 10 TTL load fan-out; 25 ns maximum rise and fall times
• Data Ready Line: TTL input, selectable high true, low true, or ignored; 1 TTL load impedance, 30 ns minimum pulse width, 5 µs maximum rise time
• ASCII character programming
Analog Comparator
• Integrated analog comparison functionality for signal threshold detection
Power & Physical
• +5 V DC power supply requirement
• Quiescent current: 0.80 A; peak current: 0.85 A
• Dimensions: 197 mm H × 220 mm D × 13 mm W (7.5 in × 8.66 in × 0.5 in)
• Operating temperature: −10°C to +65°C
• Storage temperature: −40°C to +85°C
• Humidity: <95% RH, non-condensing
– Key Features
• High-speed TTL digital input with configurable handshake logic
• Combined digital and analog signal processing on single card
• Fast data accept response time supports real-time data capture
• Modular form factor integrates into CDS 53/63 card cage systems
• ASCII-based system controller interface
– Typical Applications
• Automated test equipment requiring digital data acquisition and signal comparison
• Real-time data monitoring with analog threshold detection
• Multi-channel instrumentation systems with mixed-signal requirements
– Compatibility & Integration
Designed for CDS 53 Series and 63 Series Card Cages. Controlled via ASCII character interface from system controller. Standard module geometry allows direct integration into existing modular instrumentation platforms.
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