泰国DAB法规 学习英语~

Technical Standard for Digital Broadcasting Radio
Receiver (NBTC BS 3004-2567)

1. Scope
   This standard specifies the technical requirements for digital broadcasting radio
   receivers intended for use in Thailand. It covers the performance, safety, and
   compatibility aspects of digital radio receivers.
2. Normative References
   The following documents are referenced in this standard: - NBTC regulations on
   radio frequency allocation - International standards for digital broadcasting -
   Relevant safety standards for electrical equipment
3. Terms and Definitions
   For the purpose of this standard, the following definitions apply:
   3.1 Digital Broadcasting Radio Receiver A device capable of receiving and decoding
   digital radio signals for audio playback.
   3.2 DAB+ Digital Audio Broadcasting Plus, an enhanced version of the DAB standard.
4. Technical Requirements
   4.1 General Requirements
   4.1.1 The receiver shall be capable of receiving digital radio signals in the frequency
   bands allocated for digital broadcasting in Thailand.
   4.1.2 The device shall comply with all relevant electromagnetic compatibility
   requirements.
   4.2 Performance Requirements
   4.2.1 Sensitivity The receiver shall have a minimum sensitivity of −98 dBm for
   reliable reception.
   4.2.2 Selectivity The receiver shall have adequate selectivity to reject adjacent
   channel interference.
   4.2.3 Audio Quality The audio output shall meet the following requirements: - Signalto-noise ratio: ≥ 60 dB - Total harmonic distortion: ≤ 3% - Frequency response: 50
   Hz - 15 kHz (±3 dB)
   4.3 Language Requirements
   4.3.1 The receiver shall support Thai language display for all user interfaces.
   4.3.2 The device shall be capable of displaying Thai characters correctly.
   4.4 Safety Requirements
   4.4.1 The device shall comply with electrical safety standards for household electrical
   appliances.
   4.4.2 The receiver shall not pose any electrical shock hazard to users.
5. Testing and Certification
   5.1 Test Procedures
   5.1.1 All tests shall be conducted in accordance with the procedures specified in this
   standard.
   5.1.2 Test equipment shall be calibrated and traceable to national standards.
   5.2 Certification Requirements
   5.2.1 Manufacturers or importers shall submit test reports from accredited
   laboratories.
   5.2.2 The device shall bear the NBTC certification mark when placed on the market.
6. Marking and Labeling
   6.1 Required Markings
   Each device shall be marked with: - Manufacturer’s name and address - Model
   number - NBTC certification number - Power rating
   6.2 User Documentation
   6.2.1 The user manual shall be provided in Thai language.
   6.2.2 The manual shall contain instructions for installation, operation, and
   maintenance.
7. Conformity Assessment
   7.1 Initial Assessment
   7.1.1 The initial type approval shall be based on testing of representative samples.
   7.1.2 The assessment shall verify compliance with all technical requirements.
   7.2 Ongoing Compliance
   7.2.1 Manufacturers shall implement quality control procedures to ensure ongoing
   compliance.
   7.2.2 NBTC reserves the right to conduct market surveillance and 抽检 (random
   sampling).
8. Implementation and Enforcement
   8.1 Effective Date
   This standard shall be effective from the date of publication in the Government
   Gazette.
   8.2 Transitional Period
   A transitional period of six months shall be provided for compliance.
   Annex A: Test Methods
   A.1 Sensitivity Test
   A.1.1 Test Setup - Signal generator - Attenuator - Receiver under test
   A.1.2 Procedure 1. Connect the signal generator to the receiver input 2. Set the
   signal level to −98 dBm 3. Verify that the receiver can decode the signal with
   acceptable audio quality
   A.2 Adjacent Channel Rejection Test
   A.2.1 Test Setup - Two signal generators - Combiner - Receiver under test
   A.2.2 Procedure 1. Generate the desired signal at the nominal frequency 2. Generate
   an interfering signal at the adjacent channel 3. Measure the receiver’s ability to
   reject the interference
   Annex B: Measurement Uncertainty
   All measurements shall include uncertainty analysis in accordance with
   international standards.
   This standard is approved by the National Broadcasting and Telecommunications
   Commission (NBTC) of Thailand.

范围
本标准规定了拟在泰国使用的数字广播收音机的技术要求。内容涵盖了数字收音机的性能、安全性和兼容性等方面。

规范性引用文件
以下文件中的条款通过本标准的引用而成为本标准的条款：
NBTC（泰国国家广播电视和电信委员会）关于无线电频率分配的规定
数字广播相关的国际标准
电气设备相关的安全标准

术语和定义
就本标准而言，适用以下定义：
3.1 数字广播收音机：一种能够接收和解码数字无线电信号以进行音频播放的设备。
3.2 DAB+：数字音频广播增强版（Digital Audio Broadcasting Plus），是 DAB 标准的增强版本。

技术要求
4.1 一般要求
4.1.1 接收机应能够接收泰国分配用于数字广播的频段内的数字无线电信号。
4.1.2 设备应符合所有相关的电磁兼容性（EMC）要求。

4.2 性能要求
4.2.1 灵敏度：接收机的最小灵敏度应达到 −98 dBm，以确保可靠接收。
4.2.2 选择性：接收机应具备足够的选择性，以抑制邻道干扰。
4.2.3 音频质量：音频输出应满足以下要求：
信噪比：≥ 60 dB
总谐波失真：≤ 3%
频率响应：50 Hz - 15 kHz (±3 dB)

4.3 语言要求
4.3.1 接收机的所有用户界面应支持泰语显示。
4.3.2 设备应能够正确显示泰文字符。

4.4 安全要求
4.4.1 设备应符合家用电器的电气安全标准。
4.4.2 接收机不得对用户造成任何触电危险。

测试与认证
5.1 测试程序
5.1.1 所有测试均应按照本标准规定的程序进行。
5.1.2 测试设备应经过校准，并可溯源至国家标准。

5.2 认证要求
5.2.1 制造商或进口商应提交经认可的实验室出具的测试报告。
5.2.2 设备投放市场时，应带有 NBTC 认证标志。

标识与标签
6.1 必需标识
每台设备应标注以下信息：
制造商名称和地址
型号
NBTC 认证编号
额定功率

6.2 用户文档
6.2.1 用户手册应提供泰语版本。
6.2.2 手册应包含安装、操作和维护说明。

符合性评定
7.1 初始评定
7.1.1 初始型号核准应基于对代表性样品的测试。
7.1.2 评定应核实是否符合所有技术要求。

7.2 持续合规
7.2.1 制造商应实施质量控制程序，以确保持续合规。
7.2.2 NBTC 保留进行市场监督和抽检（random sampling）的权利。

实施与执行
8.1 生效日期
本标准自政府在政府公报上公布之日起生效。
8.2 过渡期
将提供六个月的过渡期以供合规。

附录 A：测试方法
A.1 灵敏度测试
A.1.1 测试设置：信号发生器、衰减器、待测接收机
A.1.2 程序：
将信号发生器连接到接收机输入端
将信号电平设置为 −98 dBm
验证接收机是否能在可接受的音频质量下解码信号

A.2 邻道抑制测试
A.2.1 测试设置：两个信号发生器、合路器、待测接收机
A.2.2 程序：
在标称频率上生成所需信号
在相邻频道上生成干扰信号
测量接收机抑制干扰的能力

附录 B：测量不确定度
所有测量均应按照国际标准包含不确定度分析。

本标准经泰国国家广播电视和电信委员会（NBTC）批准。