The Marconi IFR Aeroflex 4931 RF Shield is a compact electromagnetic shielding enclosure designed to isolate sensitive RF test equipment from external radio frequency interference. It delivers verified isolation performance tested to military standard VG 95373 Part 15, with absorption characteristics that suppress internal reflections and ensure repeatable measurements across high-volume testing operations. The 4931 represents an evolution of the 4921 platform, optimizing usable internal space through externally mounted gas springs while maintaining dimensional compatibility with established antenna coupler systems.
Technical Specifications
• Shielding Performance: Tested to military standard VG 95373 Part 15 for RF isolation. Exceeds datasheet-specified isolation values. Provides isolation suitable for testing RF devices co-located with radio base stations. High-grade absorption minimizes RF wave reflections and standing waves. Isolation performance remains within specification for 50,000 open-close cycles.
• Internal Usable Space: 340 × 240 × 160 mm (13.4 × 9.4 × 6.3 inches)
• External Dimensions: 410 × 265 × 220 mm (16.1 × 10.4 × 8.7 inches)
• Weight: 4.8 kg (10.5 lbs)
• Service Life: Specifications valid for one year from delivery and up to 50,000 open-close cycles
– Key Features
• Externally mounted gas springs eliminate internal finger stocks, increasing usable chamber volume and simplifying maintenance to gas spring replacement only
• Smooth operation with minimal actuation force
• High-class absorber material ensures consistent test results across multiple enclosures
• Designed for extended service in production lines and high-volume service centers
– Typical Applications
• Testing fixed wireless phones, 3G mobile devices, and WLAN equipment in production environments
• RF characterization of data cards and Wi-Fi routers in service centers
• High-rate open-close cycling in manufacturing test stations
– Compatibility & Integration
Physical dimensions match the 4921 RF Shield, ensuring consistent coupling loss measurements when paired with Aeroflex 4914, 4916, and 4918 Antenna Couplers. Complies with BS EN 61010-1 safety requirements when used with appropriate antenna coupling systems.
