The Aeroflex / Tektronix / CDS 53A-128 Communications Card is an IEEE-488 (GPIB) interface module engineered for integration into the CDS 53/63 Series Card Cage system. This card functions as a communications translator and buffer between the IEEE-488 bus and the host system, enabling the entire chained card cage architecture to be recognized and controlled as a single IEEE-488 instrument compliant with IEEE Standard 488-1978.
Technical Specifications
Interface & Bus Protocol
• IEEE-488 (GPIB) standard with support for ATN, SRQ, EOI, NDAC, NRFD, DAV, REN, and IFC functions
• Data rates up to 1 Mbyte/sec
• Binary and block data transfer modes supported
• TTL-compatible logic levels
Electrical Characteristics
• Power supply: 5 V dc (4.75 V dc to 5.25 V dc range)
• Maximum quiescent current: 0.72 A
• Peak current: 0.75 A
• Bus termination: 3 kΩ to Vcc and 6.2 kΩ to logic common on each of 16 signal lines
Environmental
• Operating temperature: 0 °C to +50 °C
• Storage temperature: -40 °C to +85 °C
• Humidity: Less than 95% RH, non-condensing
Physical & Connectors
• IEEE-488 standard 24-pin connector for bus communication
• Front-edge connector for 53/63 Series Card Cage backplane integration
– Key Features
• Power LED indicates system power status and flashes on data transmission/reception
• Listen LED illuminates when card is addressed to listen
• Integral translator and buffer architecture isolates IEEE-488 protocol from internal system bus
• Power supplied directly from card cage internal supply—no external power required
– Typical Applications
Remote instrument control and data acquisition within automated test systems utilizing IEEE-488 bus architecture. Integration with multi-card test configurations requiring centralized GPIB interface management.
– Compatibility & Integration
Designed exclusively for Aeroflex / Tektronix / CDS 53/63 Series Card Cage systems. Functions as a single instrument interface for chained card cage configurations.
