The FCC requires that from December 5, 2023, hand-held terminal must meet the ANSI C63.19-2019 standard (HAC 2019).
The standard adds Volume control testing requirements, and the FCC has granted ATIS 'request for a partial exemption from the volume control test to allow hand-held terminal to pass the HAC certification by waiving part of the volume control test.
Technical test requirements for modifying the dialogue gain, distortion, and frequency response tests of the KDB 285076 D04 volume control under exemption condition DA 23-914
1.According to the exemption, only CMRS Narrowband and CMRS Wideband voice encoders are required to meet the volume control requirements of the TIA 5050-2018 Volume Control standard:
1)Test for applying 2N force
For tests that apply 2N forces, voice services and operating bands for all embedded handheld devices and the volume control settings of one narrowband and one wideband voice codec in the air interface using the encoder ratio chosen by the applicant must have at least one session gain≥6dB.
2)Test for applying 8N force
For tests that apply 8N forces, voice services and operating bands for all embedded handheld devices and the volume control settings of one narrowband and one wideband voice codec in the air interface using the encoder ratio chosen by the applicant must have at least one session gain≥6dB.. There is no need to meet or exceed the full 18dB session gain requirements specified in TIA 5050 Section 5.1.1.
2. For other audio codecs not evaluated in 2), the reception distortion, noise performance, and audio reception frequency in TIA 5050-2018 are also not required, but these audio codecs need to evaluate the session gain of greater than 6dB at 2N and 8N states for all voice services, operating bands and air interfaces of the wireless terminal.
Other certification requirements
1.The packaging label shall comply with the requirements of 47 CFR Part 20.19(f)(1) and indicate the actual session gain obtained under the codec exemption conditions adopted in 1) and 2) above and the 2N and 8N applied force states.
2.In addition to the requirements mentioned in 1) and 2) above, all voice services, coDEC, operating bands, and air interfaces that qualify for HAC exemptions must comply with 2019 ANSI Standard Section 4 WD RF Interference, Section 6 WD T-Coil signal testing.
3.After December 5, 2023, handheld terminals must be certified by exemption conditions or fully meet the 2019 ANSI standard and TIA 5050 Volume control standard. After the waiver period expires, if no further action is taken by the Commission, handheld terminals will be considered compliant with hearing aid compatibility requirements if they meet the full 2019 ANSI standard and the associated TIA 5050 volume control standard.
4.The exemption conditions expire two years after the date of issue of the Exemption Order DA 23-914, and handheld terminals obtained under this condition will be exempt as hearing aid compatible.
5.In order to prove its compliance in the test report, the handheld terminal can refer to the corresponding simplified test method according to experience to reduce the amount of testing.
Since not all codecs supported by the device must meet the requirements, it does not matter whether these codecs meet the requirements or whether the session gain needs to be evaluated against the exemption, the test report should contain a list of all codecs supported by the device.
Post time: Dec-13-2023
