Product Overview

The LK-7900 Automatic Focusing RF Shielding Box is a multifunctional integrated testing enclosure that combines RF electromagnetic shielding, acoustic isolation, and an automatic focusing mechanism. It is specifically designed for audio and RF synchronous testing applications. The enclosure supports both manual and pneumatic opening/closing modes, with sufficient internal space for testing fixtures, audio source components, and wireless devices under test. It provides both electromagnetic signal isolation and acoustic noise isolation, enabling RF performance testing and audio acoustic evaluation within the same workstation. It is widely used for R&D verification and production line testing of TWS earphones, smart speakers, wearable devices, camera audio terminals, and other wireless products, supporting Bluetooth, Wi-Fi, cellular communication, microphone frequency response, call noise reduction, and speaker acoustic performance testing.

Technical Specifications

Parameter Category	Parameter	Specification
RF Shielding Parameters	Effective Shielding Frequency Range	700 MHz–7 GHz
	Shielding Effectiveness	70 dB
Acoustic Sound Insulation Parameters	Sound Isolation (20 Hz–200 Hz)	＞20 dB
	Sound Isolation (200 Hz-500 Hz)	＞25 dB
	Sound Isolation (500 Hz-1 KHz)	＞30 dB
	Sound Isolation (1 KHz-10 KHz)	＞40 dB
	sound insulation(10 KHz-20 KHz)	＞40 dB
Mechanical Dimensions	Effective internal dimensions	430 (W) × 480 (D) × 380 (H) mm
	Overall Dimensions	650 (W) × 610 (L) × 610 (H) mm
Function Configuration	Supported Testing Types	Synchronous Audio and RF Testing
	Opening/Closing Method	Manual/Pneumatic
Standard accessories	Standard Accessories	SMA × 8, BNC × 2, USB Cable × 4, AC 220 V × 1

Typical Application Scenarios

✅ Audio intelligent terminal production line final testing

✅ Bluetooth/Wi-Fi wireless module RF performance verification and EMC testing

✅ Laboratory R&D sample testing and automated mass production testing stations

Selection Tips

The LK-7900 is an integrated audio and RF shielding box designed for synchronous audio and RF testing applications. Liankang also provides standard RF-only shielding boxes and various pneumatic/manual shielding boxes with different cavity sizes for selection. The shielding box can be customized with various feedthrough filtering connectors, including Type-C, RJ45, BNC, audio, and DC power interfaces. Interface layouts can be configured according to specific testing requirements.