DATA SHEET APPLICATION HRT I HEAD acoustics Remote-operated Turntable HEAD acoustics GmbH 1 data sheet HRT I_ subject to change, last update: 01/23

Rotating unit with high-precision step motor Unlimited 360° rotation with 0.1 ° step width Sturdy mechanical design LCD display with switchable mode (-180° to +180° or 0° to 360°) No noise emission in measurement position, low noise emission during rotation Buttons for manual control Configuration, control and automation via ACQUA, RC-HRT I software tool or scripting Side-mounted handles for easy transportation HRT ICode 6498HEAD acoustics Remote-operated Turntable HRT I is a high-precision remote-operated turntable developed by HEAD acoustics. It allows orientation-dependent acoustic measurements...

DETAILS In any type of appliance generating or receiving sound, directivity is an important subject. Testing such devices, e.g. acoustic transducers or microphone arrays, therefore often requires them to be measured at different angles. In a measurement session, manual rotation between each single measurement is error-prone and often cumbersome. A remotely controlled, automatable rotation of the device under test is a convenient alternative. The HEAD Rotating Turntable HRT I was developed by HEAD acoustics for this purpose. HRT I comprises a rotary aluminium plate housed in a sturdy body with...

When a test case contains many repetitive steps (e.g. clockwise rotation by 10° after each measurement run), the measurement and turntable operation can be combined in an appropriate control program to fully automate the process. In idle, HRT I is virtually noise-free at 17 dBSPL(A). When rotating, noise emission is low (see technical data). In case of an emergency, rotation can be stopped at any time with the push-button on the front panel. To simulate a typical table surface to devices, the extension plate TEP-100 is available for HRT I. The plate is mounted on top of the rotary plate and has...

For measurements in which a HMS needs to be rotated, e.g. when testing directional performance of headsets, the optional Stand Base SB HRT (shown on page 6) is available. It is fixed in the center of the rotary plater after removing the center cover. SB HRT can be used with the original platter of HRT I as well as with TEP‑100. FEATURES ROTARY PLATE CENTER COVER EMERGENCY STOP The solid aluminium rotary plate has 24 threaded (M6) holes to fasten devices. The central cover plate can be removed, e.g. to duct cabling through the turntable. This button doubles as an on/off -switch as well as for...

OPTIONAL ACCESSORIES SCOPE OF DELIVERY HRT I (Code 6498) › HEAD acoustics Remote-operated Turntable RC-HRT I › Remote Configuration Software for HRT I TEP-100 (Code 6499) › HRT I Turntable Expansion Plate (100 cm Diameter, incl. Emergency Stop Push-button) CUD III (Code 6092) › Adapter USB ↔ D-sub 9-pin for Control HRT I (for connection to ACQUA PC) SB HRT (Code 6501) › Stand Base for HMS II.x Mounting on HRT I CAB II.10 (Code 6093-10) › Cable D-sub 9-pin, 10 m (RS485 Connection HRT I ↔ ACQUA PC) Power Supply › 24 V DC, 60 W User Manual GENERAL REQUIREMENTS Hardware 1 × Windows-PC › For Software...

IN PRACTICE APPLICATION EXAMPLES Measurement of a Personal Speakerphone with MS Teams This exemplary test scenario depicts testing a personal speakerphone as laid out in the Microsoft Teams test specification. This test is designed to assess the device’s performance in a quiet environment and in the absence of acoustic reflections (an anechoic room). The speakerphone is placed on HRT I equipped with its extension plate TEP-100, simulating a table with 100 cm diameter for the device. Rotating the DUT is part of the frequency response tests in an anechoic room as well as of the optional tests of...

Measurement of a smart speaker with HQS Smart Home This exemplary test scenario depicts testing a voicecontrolled smart speaker with the HEAD Quality Standard HQS‑Smart Home. This test is designed to assess the device’s directional behavior. The test suite allows to choose between a full rotation of HRT I for omnidirectional devices or ±90 degrees for directional appliances. The smart speaker is placed on HRT I equipped with its extension plate TEP-100, simulating a table with 100 cm diameter for the device under test. LEMO ® is a registered trademark of LEMO S.A. Microsoft, Windows are trademarks...