TIA-5050: Receive Volume Control Requirements for Wireless (Mobile) Devices

TIA 5050 is a US standard with measurement methods and requirements for the receive volume control performance of both narrowband (NB) and wideband (WB) mobile handset phones. The measurements include conversational gain, frequency response, and distortion. Measurements are made at both 2N and 8N handset application forces, with different requirements applied to each. Either Free Field (FF) or Diffuse Field (DF) can be chosen as the Listener Reference Point (LRP) for receive frequency response.

This module is a structured set of sequences and subsequences which perform all the measurements. Curves and values are shown on the screen, and tolerance checks are performed. Data is saved to a pre-formatted Excel test report that includes all measurements on any one device. Completely prompted sequences for calibration of the HATS Right ear and the audio path of the Cellular Phone RF Air Interface are included. After a one-time setup with a sound card and other user-specific interfaces, the sequences are automatic. They run by simply selecting, pressing start, and following prompts where user interaction with the device under test is required. The sequence works with approved sound cards for connection to the transducers and Air Interface.

The performance requirements of the standard apply only to handset mobile phones, but the measurement methods may also be applicable to single headsets connected to a mobile phone. (Note: No measurements in the sending direction are included.)

These sequences are available for SoundCheck version 18.