The Federal Communications Commission (FCC) in the United States requires that starting from December 5, 2023, all handheld terminal devices must meet the requirements of the ANSI C63.19-2019 standard (i.e. the HAC 2019 standard). Compared to the old version of ANSI C63.19-2011 (HAC 2011), the main difference between the two lies in the addition of volume control testing requirements in the HAC 2019 standard. The testing items mainly include distortion, frequency response, and session gain. The relevant requirements and testing methods need to refer to the standard ANSI/TIA-5050-2018.
The US FCC issued the 285076 D05 HAC Waiver DA 23-914 v01 exemption regulation on September 29, 2023, with an exemption period of 2 years starting on December 5, 2023. It is required that new certification applications must comply with the requirements of 285076 D04 Volume Control v02 or in conjunction with the temporary exemption procedure document KDB285076 D05 HAC Waiver DA 23-914 v01 under 285076 D04 Volume Control v02. This exemption allows handheld terminal devices participating in certification to lower certain testing requirements in accordance with ANSI/TIA-5050-2018 testing methods to pass Volume Control testing.
For the Volume Control test, the specific exemption requirements are as follows:
(1) For testing narrowband and broadband coding of wireless network telephone services (such as AMR NB, AMR WB, EVS NB, EVS WB, VoWiFi, etc.), the requirements are as follows:
1) Under 2N pressure, the applicant chooses a narrowband encoding rate and a broadband encoding rate. At a certain volume, for all voice services, band operations, and air port settings, the session gain must be ≥ 6dB, and the distortion and frequency response must meet the standard requirements.
2) Under 8N pressure, the applicant chooses a narrowband encoding rate and a broadband encoding rate, and for all voice services, band operations, and air port settings at the same volume, the session gain must be ≥ 6dB, instead of the standard ≥ 18dB. The distortion and frequency response meet the requirements of the standard.
(2) For other narrowband and broadband encodings not mentioned in item (1), the session gain should be ≥ 6dB under pressure conditions of 2N and 8N, but there is no need to test distortion and frequency response.
(3) For other encoding methods not mentioned in item (1) (such as SWB, FB, OTT, etc.), they do not need to meet the requirements of ANSI/TIA-5050-2018.
After December 5, 2025, if the FCC does not issue further documentation, the Volume Control testing will be strictly carried out in accordance with the requirements of ANSI/TIA-5050-2018.
BTF Testing Lab has the HAC 2019 certification testing capability, including RF Emission RF interference, T-Coil signal testing, and Volume Control volume control requirements.
Post time: Jan-04-2024
