The developments in technology have changed the shape and size of telephone handsets and headsets.

To ensure these latest handsets and headsets are tested to the appropriate regulatory standards according to the design principles used by the manufacturer, Comtest has invested in a Head and Torso Simulator (HATS) which incorporates a Type 3.3 artificial ear.

Comtest has been aware for some time that the major manufacturers of telephony products have been designing their product for the world market using the Type 3.3 ear and HATS. In the past it has been difficult or impossible for these devices to prove compliance to the regulatory standards using the Type 1 or Type 3.2 Artificial Ears.

The HATS purchased by Comtest is a Type 4128 D-002 with both left and right ears.

The Head and Torso Simulator Type 4128-D-002 is a mannequin with built-in mouth simulator and calibrated ear simulators (according to IEC 60318.4/ITU T Rec. P.57 Type 3.3) that provide realistic reproduction of the acoustic properties of an average adult human head and torso. It is ideal for performing in-situ electroacoustic tests on, for example, telephone handsets (including mobile and cordless), headsets, audio conference devices, microphones, headphones, hearing aids and hearing protectors.

Handset Positioner for HATS

The HATS Type 4128-D-002 includes Handset Positioner Type 4606, with pressure/force and position read-outs this allows for accurate, repeatable mounting of telephone handsets on the HATS in both standardised and user-defined positions. This makes the HATS measurements very repeatable.