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09/11/2021
MEASUREMENT

DASY8 Module HAC2019 (ANSI C63.19-2019)

SPEAG has released DASY8 Module HAC2019. The new module provides a guided workflow that demonstrates the compliance of any wireless device with the latest Hearing Aid Compatibility standard ANSI C63.19-2019 and the latest Federal Communication Commission requirements. Module HAC2019 is also available for DASY6.

Demonstrating Hearing Aid Compatibility (HAC) is important for warranting the electromagnetic and operational compatibility of hearing aids and wireless devices. In February 2021, the Federal Communication Commission (FCC) announced the adoption of the 2019 edition of ANSI C63.19, the “American National Standard Methods of Measurement Compatibility Between Wireless Communications Devices and Hearing Aids,” which became effective June 4, 2021. The FCC is giving manufacturers a two-year transition period (i.e., until June 4, 2023) to adopt the requirements of the updated ANSI C63.19-2011 standard. It has also extended the volume control deadline to match this transition period. Beginning June 5, 2023, only test reports that comply with ANSI C63.2019 will be accepted.

Following SPEAG’s tradition of staying ahead of requirements, we started early with the development of Module HAC2019 for DASY8/6 users. This is a completely new software solution based on SPEAG’s latest graphical user interface technology that guides users through the compliance workflow by using specific Jupyter Notebooks. The DASY8/6 system is interfaced via a dedicated application programming interface.

During development, we have been meticulous in ensuring that we reuse as much as possible of the previous HAC hardware in order to save resources and costs for our customers. The only element that has been replaced is the audio interference analyzer (AIA), which has been superseded by the modulation and audio interference analyzer (MAIA) to evaluate the modulation interference factor (MIF).

DASY8/6 Module HAC2019 consists of four Jupyter Notebooks that represent the different steps of the compliance workflow:

  • MIF measurements with MAIA
  • Simplified verification of the radiofrequency (RF) test setup using RF emission calibration dipoles
  • Evaluation of the wireless device RF interference potential by determining the RF audio interference level (RFail)
  • Measurement of the baseband (audio frequency) magnetic T-Coil (Tele-Coil) signal from a wireless device.

The workflow can easily be implemented, as shown in this video:

MIF Measurements with MAIA

The MAIA allows verification of the MIF values used to calculate the RFail. The MAIA can be operated over the air interface using the built-in ultra-broadband planar log spiral antenna (supported frequency range: 698–6000 MHz) or in conducted mode using the coaxial SMA 50 Ω connector (supported frequency range: 300–6000 MHz).

MIF

Figure 1: MIF Measurement of a 5G new radio frequency range 1 frequency division duplex signal

RF Test Setup Verification

A dedicated Notebook has been developed for verifying the RF interference measurement setup. The user can select and optimize the measurement configuration in a list of predefined templates. Peak values are automatically detected for easy comparison with the measurement targets.

SystemCheck

Figure 2: Interpolated E-field Distribution of a CD2450V3 Dipole

RF Audio Interface Level Determination

In Module HAC2019, the RFail is assessed using the (preferred) indirect test procedure described in ANSI C63.19-2019. A 50x50 mm region centered on the speaker location is scanned and the root mean square (RMS) electric field values are recorded at each point. Once the scan is completed, the RFail is obtained by adding the MIF value to the average steady RMS field strength averaged over the measurement area.

RF

Figure 3: Interpolated E-field distribution of a wireless device after MIF scaling

Baseband Magnetic T-Coil Signal

The Jupyter Notebook developed for baseband magnetic T-Coil testing guides the users through the measurement steps described in the ANSI C63.19-2019:

  • Validation of the measurement equipment using a telephone magnetic field simulator (TMFS) or a Helmholtz coil
  • Determination of the wireless device drive levels for each audio signal
  • Measurement of the desired magnetic field with a voice-like signal (desired audio band magnetic (ABM) signal)
  • Measurement of the frequency response at the maximum location of the desired ABM signal
  • Measurement of the undesired broadband audio magnetic signal (undesired ABM signal)

The T-Coil coupling qualifying strengths, including determination of the primary and secondary groups, as well the magnetic field frequency response are computed by the post-processor and are available for visualization and reporting.

Groups2

Figure 4: Evaluation of Primary and Secondary Groups according to ANSI C63.19-2019

The software installer will be available on November 15th.

For further information, please contact us at info@speag.swiss or any of our sales channels.

 

MEASUREMENT

13/07/2016

Contact
info@speag.swiss

 

cSAR3D V2.6 Release - Faster Automation

Our new cSAR3D software release 2.6 features a further improved reconstruction algorithm, more precise determination of the peak spatial SAR close to the border of the sensor array, and faster and more reliable handovers of 2G, 3G and 4G signals. We are also pleased to announce that this quarter we are releasing both automated testing of devices with dynamic antenna tuners and autonomous DUT positioning based on DASY robots with integrated camera and device charger. 

 
MEASUREMENT

01/07/2016

Contact
info@speag.swiss

 

ISO/IEC 17025 Accreditation for Calibration

ISO/IEC 17025 Accreditation for Calibration of probes & validation sources extended down ot 4 MHz and Calibration of dielectric materials awarded

 
MEASUREMENT

31/03/2016

Contact
info@speag.swiss

 

DASY Measurement Protocol for Capacitively Coupled SAR Distribution

SPEAG recommends an updated measurement protocols for compliance testing with DASY52 to account for new technology trends and regulator requirements. cDASY6 will have a more advanced automated approach.

 
MEASUREMENT

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info@speag.swiss

 

Chinese OTA Hand Phantoms

Release of the first Chinese OTA hand phantom developed in collaboration with HWA-Tech for the Chinese Academy of Broadcasting Planning (ABP).

 
CORPORATE

11/03/2016

Contact
info@speag.swiss

 

SPEAG Fast SAR Solutions Featured at MIC MRA Workshop in Tokyo

The performance of SPEAG’s products for fast measurement of specific absorption rate (SAR) – DASY6 and cSAR3D – were featured in a presentation by Prof. Niels Kuster at the MIC MRA International Workshop held March 2 – 3, 2016 in Tokyo hosted by the Japanese Ministry of Internal Affairs and Communications.

 
SIMULATION

08/03/2016

Contact
semx-support@speag.swiss

 

SEMCAD Matterhorn V15.6.3 Update Release

The SEMCAD X Team is pleased to announce the release of SEMCAD Matterhorn V15.6.3, an updated version of SEMCAD Matterhorn  V15.6.

 
MEASUREMENT

23/02/2016

Contact
info@speag.swiss

 

Still Groovin’ to the E-Field Probe Blues by Prof. Howard Bassen

The first paper to describe the design and fabrication of a miniature broad-band electric field probe was published more than 40 years ago in the Annals of the New York Academy of Sciences, Biological Effects of Nonionizing Radiation.

 
MEASUREMENT

10/02/2016

Contact
info@speag.swiss

 

Anritsu MT8820C Integrates with DASY6 and cSAR3D

Anritsu Corporation’s MT8820C Radio Communication Analyzer now integrates with both DASY6 and cSAR3D from Schmid & Partner Engineering AG (SPEAG) to provide seamless Specific Absorption Rate (SAR) compliance testing that significantly reduces assessment costs and maximizes flexibility.

 
MEASUREMENT

06/02/2016

Contact
info@speag.swiss

 

Notice: Limited warranty on phantoms

Important notice to avoid shell degradation of SPEAG phantoms due to exposure to aggressive liquids.

 
CORPORATE

04/02/2016

Contact
info@speag.swiss

 

IT'IS/Speag/ZMT Retreat in Melchsee-Frutt on Mastering Sales/Funding, Spotting Trends and Shaping the Future

Twenty IT'IS Foundation, SPEAG, and ZMT co-workers convened for two-day retreat, 01 – 02 February 2016, held at the Hotel Frutt Lodge & SPA, in Melchsee-Frutt, Canton Obwalden. The goal of the retreat was to learn how to spot trends and become a trend setter, to master sales, to assess the current status of the organization, and to establish measures for improvement.

 
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