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5211 Wireless Interface Test System

5211  Wireless Interface Test System

The ETS Model 5211 Wireless Interface Test System, (WITS™), is a self-contained portable enclosure that can check cell phone transmit and receive functionality with or without direct cable connection to the RF or data ports.

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5211 Datasheet Product Datasheet

Key Features

  • Works with Mobile/Cellular Radio Test Sets: HP 8924
  • >80 dB Typical RF Isolation
  • On-The-Air Test TX, RX Functionality Without Direct Cable connection to Cell Phone Data Port
  • Flat Coupling Response over 700 MHz - 2 GHz
  • Custom Configurations Available
  • Phone Placement Fixture Assures Test Repeatability


This is accomplished using a patent-pending near field coupler in the enclosure that couples with the phone’s own antenna. The coupling coefficient has a flat response over the frequency range of 700 MHz – 2 GHz.

With this (CAI), or common air interface, the operator performs the test faster and simulates a real-world environment. In contrast, the direct connection method bypasses the antenna and adds up to several dB of loss to the measurement. The CAI method provides a shorter signal path and readily detects a faulty antenna. (A connector is provided for testing with a direct connection if desired.) To eliminate nulls and hot spots, each enclosure is lined with ETS-Lindgren RF absorber, which improves test repeatability. Compressible RF gasketing is used to seal the lid on closure. Nominal shielding effectiveness > 80 dB, although higher values are possible.

Consistent orientation of the phone in the enclosure is important for test repeatability. To help the operator position the phone correctly, a sliding clamp and alignment post are built into the bottom of the enclosure. The base is also marked with an illustration of a typical phone position. The enclosure includes one external Type-N connector, which links the antenna coupler to the test set; one Type-N connector feed through for traditional direct connection testing; and a 9-pin filtered D-sub connector for more advanced test procedures.

Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44(0)1438.730700 Tel + Tel +8610.8275.5086 Tel+ 81.3.3813.7100
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44(0)1438.730751 Fax + Fax +8610.8275.5537 Fax +81.3.3813.8068

Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specification.