The Aeroflex / Tektronix / CDS 53A-332 Reed Relay Scanner Card routes signals from multiple sources to measurement instruments within the CDS 53/63 Series architecture. Built around a matrix of high-quality reed relays, the card delivers twenty 2-wire channels with low initial contact resistance and extended operational life. This design ensures signal integrity and measurement repeatability in demanding switching applications while minimizing distortion across signal paths.
– Technical Specifications
Channel & Relay Configuration
• Twenty 2-wire channels
• Reed relay matrix construction
• 48-pin connector interface
Electrical Requirements
• Power supply: 5 V DC from 53/63 Series Card Cage
• Operating voltage range: 4.75 V to 5.25 V DC
• Maximum quiescent current (all relays open): 0.30 A
• Peak current (all relays closed): 0.75 A
Contact & Switching Specifications
• Maximum resistive load: 10 W
• Maximum DC switching voltage: 200 V
• Maximum switching current: 0.5 A
• Initial contact resistance: < 100 mΩ
• Contact resistance at end of reed life: 500 mΩ
• Signal path resistance at end of reed life: < 1.4 Ω
• Differential thermal offset: < 15 µV
• Single-line thermal offset: 10 GΩ
– Key Features
• Low contact resistance ensures minimal signal loss and high measurement fidelity
• Extended reed life rated at 10 million operations per channel
• High-speed switching capability up to 150 channels per second
• Excellent thermal stability with sub-50 microvolt offset performance
• Continuous duty cycle operation for uninterrupted test sequences
– Typical Applications
Automated test systems requiring matrix signal routing, high-speed channel selection, and low-noise measurement paths in RF and analog signal environments.
– Compatibility & Integration
Installs directly into any function card slot of a 53 or 63 Series Card Cage. ASCII character programming from system controller. Operates from internal cage power supply and thermal management system.
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