Chiyambi cha FCC HAC 2019 Volume Control Requirements and Standards ku United States

Bungwe la Federal Communications Commission (FCC) ku United States likufuna kuti kuyambira pa Disembala 5, 2023, zida zonse zogwira pamanja ziyenera kukwaniritsa zofunikira za ANSI C63.19-2019 muyezo (ie muyezo wa HAC 2019). Poyerekeza ndi mtundu wakale wa ANSI C63.19-2011 (HAC 2011), kusiyana kwakukulu pakati paziwirizi kwagona pakuwonjezera zofunikira zoyezera voliyumu mu muyezo wa HAC 2019. Zinthu zoyeserera zimaphatikizapo kupotoza, kuyankha pafupipafupi, komanso kupindula kwa gawo. Zofunikira zoyenera ndi njira zoyesera ziyenera kutsata muyezo wa ANSI/TIA-5050-2018.
US FCC idapereka lamulo la 285076 D05 HAC Waiver DA 23-914 v01 pa Seputembara 29, 2023, ndi nthawi yazaka 2 kuyambira pa Disembala 5, 2023. Ndikofunikira kuti zofunsira zatsopano za certification zigwirizane ndi zofunikira za 28507670 D04 Volume Control v02 kapena molumikizana ndi chikalata chakanthawi chomasulidwa KDB285076 D05 HAC Waiver DA 23-914 v01 pansi pa 285076 D04 Volume Control v02. Kukhululukidwa kumeneku kumalola zida zogwiritsira ntchito m'manja zomwe zikuchita nawo certification kuti zichepetse zofunikira zina zoyeserera malinga ndi njira zoyesera za ANSI/TIA-5050-2018 kuti zithe kuyesa Volume Control.
Pakuyesa kwa Volume Control, zofunikira zenizeni zomwe sizikuloledwa ndi izi:
(1) Poyesa makhodi ang'onoang'ono ndi ma burodibandi a matelefoni opanda zingwe (monga AMR NB, AMR WB, EVS NB, EVS WB, VoWiFi, ndi zina), zofunikira ndi izi:
1) Pansi pa kukakamizidwa kwa 2N, wopemphayo amasankha kuchuluka kwa kabisidwe ka bandendi yocheperako komanso kuchuluka kwa kabisidwe ka burodibandi. Pa voliyumu inayake, pa mautumiki onse a mawu, machitidwe a bandi, ndi makonzedwe a doko la ndege, phindu la gawoli liyenera kukhala ≥ 6dB, ndipo kusokoneza ndi kuyankha pafupipafupi kuyenera kukwaniritsa zofunikira.
2) Pansi pa kukakamizidwa kwa 8N, wopemphayo amasankha kuchuluka kwa kabisidwe ka bandi ndi kuchuluka kwa ma encoding a burodibandi, ndi mautumiki onse a mawu, magwiridwe antchito a bandi, ndi makonzedwe a doko la ndege pa voliyumu yomweyo, phindu la gawoli liyenera kukhala ≥ 6dB, m'malo mwa muyezo ≥ 18db pa. Kusokoneza ndi kuyankha pafupipafupi kumakwaniritsa zofunikira za muyezo.
(2) Kwa ma encodings ena ocheperako ndi ma Broadband omwe sanatchulidwe mu chinthu (1), phindu la gawoli liyenera kukhala ≥ 6dB pansi pa zovuta za 2N ndi 8N, koma palibe chifukwa choyesa kupotoza ndi kuyankha pafupipafupi.
(3) Kwa njira zina zolembera zomwe sizinatchulidwe mu chinthu (1) (monga SWB, FB, OTT, etc.), siziyenera kukwaniritsa zofunikira za ANSI/TIA-5050-2018.
Pambuyo pa Disembala 5, 2025, ngati FCC sipereka zolembedwa zina, kuyesa kwa Volume Control kudzachitidwa mosamalitsa malinga ndi zofunikira za ANSI/TIA-5050-2018.
BTF Testing Lab ili ndi kuthekera koyesa ziphaso za HAC 2019, kuphatikiza kusokoneza kwa RF Emission RF, kuyesa ma siginolo a T-Coil, ndi zofunikira zowongolera voliyumu ya Volume Control.