The Aeroflex/Tektronix/CDS 53A-342 is a dual decade resistance programming card engineered for precision resistance selection within modular test systems. It delivers programmable resistance control across two decades, enabling accurate impedance simulation and component behavior emulation in automated test environments. The card integrates directly into CDS 53/63 Series Card Cage systems, accepting ASCII character commands for remote resistance programming and drawing power from the cage’s regulated supply.
Technical Specifications
Power Requirements
• Input Voltage: 4.75 V dc to 5.25 V dc (supplied by card cage)
• Quiescent Current: 0.30 A maximum (all relays open)
• Peak Current: 0.75 A maximum (all relays closed)
Resistance Programming
Dual decade resistance control with ASCII command interface. Specific resistance range and resolution depend on decade configuration implemented on the card.
Physical Dimensions
• Height: 197 mm (7.75 in)
• Depth: 221 mm (8.69 in)
• Width: 13 mm (0.5 in)
Environmental Operating Range
• Temperature: -10 °C to +65 °C (operating)
• Temperature: -40 °C to +85 °C (storage)
• Humidity: Less than 95% R.H. non-condensing (-10 °C to +30 °C); Less than 75% R.H. non-condensing (+31 °C to +40 °C); Less than 45% R.H. non-condensing (+41 °C to +55 °C)
– Key Features
• Dual decade programmable resistance architecture
• Low quiescent current consumption for power-sensitive applications
• ASCII character-based control protocol
• Compact form factor (13 mm width) for dense card cage installations
• Operates across extended environmental temperature range
– Compatibility & Integration
Designed as a functional module within Aeroflex/Tektronix/CDS 53/63 Series Card Cage systems. Connects directly to cage power distribution and communicates via standard ASCII protocol. Suitable for applications requiring automated resistance programming in production test, characterization, and simulation environments.
