Circular No. 17/2020/TT-BTTTT Issuing "National Technical Regulations on Ground Digital Television Receivers DVB-T2"

CIRCULAR

Issuing "National Technical Regulation on Digital Terrestrial Television Receivers
DVB-T2 Standard"

On the basis of Law on Standards and Technical Regulations June 29, 2006;

On the basis of Law on Telecommunications November 23, 2009;

On the basis of Law on Radio Frequency November 23, 2009;

Decree No. Decision No. 127/2007/NĐ-CP August 1, 2007, of the Government detailing and guiding the implementation of certain provisions of the Law on Standards and Technical Regulations;

Decree No. 78/2018/NĐ-CP May 16, 2018 of the Government amending and supplementing certain provisions of Decree No. Decision No. 127/2007/NĐ-CP pursuant to Article 5 of the Law on Standards and Technical Regulations dated August 1, 2007 issued by the Government detailing the implementation of certain provisions of the Law on Standards and Technical Regulations;

Decree No. Resolution No. 17/2017/NĐ-CP dated February 17, 2017 of the Government detailing the functions, tasks, powers, and organizational structure of the Ministry of Information and Communications;

Pursuant to the proposal of the Director of the Science and Technology Department,

The Minister of Information and Communications issues this Circular stipulating the National Technical Regulation on Digital Terrestrial Television Receivers DVB-T2.

Article 1. Attached herewith is the National Technical Regulation on Digital Terrestrial Television Receivers DVB-T2 (QCVN 63:2020/BTTTT).

Article 2. Effective Date

1. This Circular takes effect from July 1, 2021.

2. The National Technical Regulation on Digital Terrestrial Television Receivers DVB-T2, designated as QCVN 63:2012/BTTTT, prescribed in Clause 1, Article 1 of Circular No. 20/2012/TT-BTTTT dated December 4, 2012 issued by the Minister of Information and Communications regarding National Technical Regulations on Telecommunications and Clause 1, Article 1 of Circular No. 15/2013/TT-BTTTT dated July 1, 2013 issued by the Minister of Information and Communications amending and supplementing Circular No. 20/2012/TT-BTTTT dated December 4, 2012 of the Minister of Information and Communications on National Technical Regulations shall cease to be effective from July 1, 2021.

Article 3. The Director of the Office, Heads of Departments under the Ministry of Information and Communications, Heads of Provincial Departments of Information and Communications, and organizations and individuals related to this matter are responsible for implementing this Circular./.

QCVN 63:2020/BTTTT

NATIONAL TECHNICAL REGULATION ON DIGITAL TERRESTRIAL TELEVISION RECEIVERS DVB-T2

National technical regulation on digital receiver used in DVB-T2 digital terrestrial television broadcasting

Foreword

QCVN 63:2020/BTTTT TO REPLACE QCVN 63:2012/BTTTT.

QCVN 63:2020/BTTTT compiled by the Telecommunications Department, submitted for review by the Science and Technology Department, examined by the Ministry of Science and Technology, and issued together with Circular No. 17/2020/TT-BTTTT dated August 20, 2020.

NATIONAL TECHNICAL REGULATION ON DIGITAL TERRESTRIAL TELEVISION RECEIVERS DVB-T2

National technical regulation on digital receiver used in DVB-T2 digital terrestrial television broadcasting

Chapter 1. GENERAL PROVISIONS

1.1. Scope of Application

This national technical regulation sets out the minimum technical requirements for free-to-air (FTA) digital terrestrial television receivers not encrypted according to the DVB-T2 standard, supporting SDTV and/or HDTV in Vietnam.

This regulation applies to both standalone set-top boxes (STBs) and integrated digital television receivers (iDTVs) that support SDTV and/or HDTV.

This regulation applies to DVB-T2 digital terrestrial television receivers with HS codes specified in Appendix B.

1.2. Applicability

This regulation applies to organizations and individuals engaged in the production and importation of DVB-T2 digital terrestrial television receivers in Vietnam.

1.3. Referenced Documents

TCVN 5712:1999, Information Technology. 8-bit Vietnamese Character Code Set.

CI Plus Specification V1.3.

ETSI EN 300 468 V1.15.1 (2016-03), Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems.

ETSI EN 300 743 V1.6.1 (2018-07), Digital Video Broadcasting (DVB); Subtitling systems.

ETSI EN 300 744 V1.6.2 (2015-10), Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television.

ETSI EN 302 755 V1.4.1 (2015-07), Digital Video Broadcasting (DVB); Frame structure channel coding and modulation for a second generation digital terrestrial television broadcasting system (DVB-T2).

ETSI EN 50221, Common Interface Specification for Conditional Access and other Digital Video Broadcasting Decoder Applications, Feb. 1997.

ETSI TR 101 154 V2.4.1 (2018-02), Digital Video Broadcasting (DVB); Specification for the use of Video and Audio Coding in Broadcasting Applications.

ETSI TR 101 211 V1.12.1 (2013-12), Digital Video Broadcasting (DVB); Guidelines on implementation and usage of Service Information (SI).

ETSI TS 102 114, DTS Coherent Acoustics; Core and Extensions with Additional Profiles.

IEC 48B sec 316 RCA.

IEC 60603-14, Connectors for frequencies below 3 MHz for use with printed boards.

IEC 6169-2, Radio-frequency connectors - Part 2: Sectional specification - Radio frequency coaxial connectors of type 9,52.

ISO/IEC 11172-3, Information technology- Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mb/s.

ISO/IEC 13818-1, Information technology- Generic coding of moving pictures and associated audio information: Systems.

ISO/IEC 13818-2, Information technology- Generic coding of moving pictures and associated audio information: Video.

ISO/IEC 14496-3, Information technology- Coding of audio-visual objects- Part 3: Audio.

ISO/IEC 14496-10, Information technology- Coding of audio-visual objects- Part 10: Advanced Video Coding.

1.4. Terms and Definitions

1.4.1. Mode A (mode A)

DVB-T2 signal mode using Single PLP.

1.4.2. Mode B (mode B)

DVB-T2 signal mode using Multi PLP. Mode B may have Multi PLP without Common PLP or may have Multi PLP and Common PLP.

1.4.3. iDTV (integrated Digital Television)

User terminal device with display screen, RF input connector with 75 Ohm impedance jack interface, decoded service output delivered to the display screen of the device.

1.4.4. STB (Set-Top-Box)

User terminal device without display screen, decoded service output delivered to external display through audio and video interface (e.g., HDMI).

1.4.5. Receiver (receiver)

Device receiving digital terrestrial television signals transmitted according to the DVB-T2 standard. The receiver must have RF channel scanning, demodulation, channel de-multiplexing, and decoding functions. The receiver can be either a standalone device (STB) or integrated within a television set (iDTV). The receiver may also be a type that only supports SDTV (SDTV receiver) or supports both SDTV and HDTV (HDTV receiver).

1.4.6. HDTV Level Receiver (HDTV level receiver)

Device capable of receiving high-definition (HDTV) and standard-definition (SDTV) signals for display on a screen at original resolution.

1.4.7. SDTV Level Receiver (SDTV level receiver)

Device that only supports receiving standard-definition (SDTV) signals for display on a screen at original resolution, does not support high-definition (HDTV).

1.4.8. Up Converter

Frequency upconverter.

1.4.9. QEF Evaluation (Quasi Error Free)

The quality is considered to meet requirements when there is no more than one unexpected event within 1 hour, corresponding to a BER=10^-10 in the TS data at the input of the MPEG-2 decoder.^-11 in the transmitted TS data at the input of the MPEG-2 decoder.

1.5. Abbreviations

Chapter 2. TECHNICAL PROVISIONS

2.1. General Requirements

2.1.1. Requirements for Signal Reception and Decoding

The receiver must be capable of receiving and decoding DVB-T2 signals transmitted according to the standard ETSI EN 302 755 in both single-frequency networks (SFN) and multi-frequency networks.

2.1.2. Power Supply Requirements for STB

The STB must be able to operate under the following power supply conditions:

- Voltage: from 100 VAC to 240 VAC;

- Voltage frequency: 47.5 Hz to 52 Hz.

2.1.3. Software Upgrade

The receiver must have at least one mechanism for software system upgrades.

The receiver must have a mechanism to detect errors in the downloaded software system before it is used to replace the currently running software system. If the received software system is found to be erroneous, the receiver must retain the current version of the software system to continue normal operation. In cases where downloading takes too long due to poor network conditions, the receiver must support users in aborting the download and continuing with the current version of the software.

For each new version of the software system, manufacturers must provide instructions on how to download the new software. Manufacturers are responsible for providing and distributing new versions of the software system.

2.2. Functional Requirements

2.2.1. Display of Signal Quality Indicators and Signal Strength Indicators

The receiver must support the display of signal quality indicators (SQI) and signal strength indicators (SSI) on the television screen. The method of displaying SQI and SSI information is determined by the manufacturer.

2.2.2. Service Information

2.2.2.1. Processing of PSI/SI Tables

The receiver must have software to analyze and process active service information while controlling hardware/software according to standards EN 300 468 and ETSI TR 101 211.

The receiver must be capable of processing the following tables: NIT, PAT, PMT, SDT, EIT, TDT. These information tables are described in the specifications for the DVB-T2 transmission signal.

The device must be able to monitor, update correctly and sufficiently the status of channels or services without user intervention in the following situations:

- When there is no change in channel or service status: The receiver must maintain the current status of the channel or service.

- When there is a change in channel name: Within 40 seconds of the channel name change, the receiver must automatically update the new channel name.

- When a program channel is deleted: Within 40 seconds of the channel deletion, the receiver must remove the channel from the channel list.

- In case of deleting one program channel while simultaneously changing the position of another channel: Within 40 seconds from the deletion of one channel and the change of position of another channel, the receiver device must be able to delete the deleted channel while correctly updating the new position of the channel that has been moved in the channel list.

- In case there is only one audio channel: The receiver device must be able to receive exactly one audio channel and decode the correct name label of that audio channel.

- In case of inserting a new audio channel into a program channel: Within 40 seconds from the insertion of an additional audio channel into a program channel, the receiver device must be able to receive an additional new audio channel and decode the correct name label of that audio channel.

2.2.2.2. Real-time clock

The receiver device must have a real-time clock which must be updated with data from the TDT tables.

2.2.2.3. Features of EPG for the actual EIT table and other EIT tables

The receiver device must provide basic EPG functions as follows:

- Actual EIT (current/next/schedule);

- Other EIT (current/next/schedule).

The EPG function of the receiver device must be capable of providing information about programs expected to be broadcast within at least the next 7 days. Information about the program includes: program name, start and end time of the program/event, short bulletins (if any).

2.2.3. Program management module

The receiver device must have a program management module allowing users access to system information and control the operations of the receiver device. The program management module must include the function of managing the service list and the basic EPG event management function.

The program management module must support Vietnamese and English languages. Vietnamese characters must comply with the UTF-8 code table in TCVN 5712:1999. - Service list management function: The device has the ability to scan channels, delete channels, move channel positions.

1. Clarify the thoughts of cadres and workers, unite cadres, unite workers, unite old and new members, and unite Northern and Southern compatriots. Resolve political and material benefits for those who were wrongly treated, first restoring political rights; restore normal activities in all aspects in enterprises, construction sites, and agricultural farms.

- Event management function: The device has the ability to display current time, start and end time of the program, channel order, program/event name, short bulletins (if any).

2.2.4. Subtitles

The receiver device must have the capability to decode and display DVB subtitles transmitted according to the standard ETSI EN 300 743. The receiver device must support Vietnamese subtitles.

- The receiver device has the capability to support English and Vietnamese subtitle languages in programs.

1. Clarify the thoughts of cadres and workers, unite cadres, unite workers, unite old and new members, and unite Northern and Southern compatriots. Resolve political and material benefits for those who were wrongly treated, first restoring political rights; restore normal activities in all aspects in enterprises, construction sites, and agricultural farms.

- The device has the ability to display the correct subtitle language based on language option settings.

- In the case where there is no preferred subtitle language, the receiver device must display the first available subtitle language in the list.

2.2.5. Logical Channel Numbering

The receiver device must have the capability to process service information from the logical channel number (LCN) table to support numbering, sorting, and searching for channels.

The receiver device supports LCN by using a logical channel descriptor with the descriptor_tag set to 0x83 with the structure and syntax as follows:

Syntax

Within thedescriptor_tag:

set to 0x83; service_id:

16-bit field used to identify the service in the transport stream (TS); visible_service_flag:

display service flag, value is '1' if the service can be displayed and selected in the service menu on the receiver; value is '0' if the service cannot be displayed and selected in the service menu on the receiver; reserved:

reserved field for future use, consisting of 5 bits set to '1'; logical_channel_number:

10-bit field indicating the priority level when sorting services. LCN will be numbered from 1 to 999. Among them, channels are numbered from 1 to 799 by the service provider; the backup LCN channel is numbered from 800 to 999.

The receiver device must have the capability to number channel sequence, sort, and scan channels in cases where channels have sufficient LCN information, some channels do not carry LCN information, and two channels have the same LCN number.

2.3. Interface Requirements

2.3.1. RF Input Connector Port

The receiver device must have an RF input connector port according to the IEC 61169-2 jack type, 75 ohm impedance standard.

2.3.2. HDMI

STBs supporting HDTV must have an HDMI interface to output video and audio signals.

2.3.3. Composite Video Output

STBs must have a composite video output compatible with the requirements for the PAL interface standard in IEC 48B-316 (RCA phono).

2.3.4. RCA Audio Interface

STBs must have an analog RCA audio output, jack type according to the IEC 60603-14 standard.

2.3.5. Conditional Access Interface Support

If there is a conditional access interface, the receiver device must have at least one CI interface compliant with the ETSI EN 50221 standard or CI Plus version 1.3 interface.

2.4. Technical Requirements

2.4.1. Channel Frequency and Bandwidth

The receiver device must be able to receive all channels provided for terrestrial digital television (DTT) within the frequency planning of the VHF/UHF band in Vietnam as shown in Table 1.

Table 1 - VHF/UHF Band Frequency Channel Allocation Table of Vietnam

Band

2.4.2. Signal Bandwidth

For DVB-T2, the receiver device must support both standard carrier bandwidth modes and extended carrier bandwidth modes. For DVB-T2, the receiver device must automatically follow changes in network parameter settings from the standard carrier bandwidth mode to the extended carrier bandwidth mode without any user intervention.

2.4.3. RF Modes

The receiver device must be able to receive DVB-T2 signals with parameters being any combination of the parameters in Table 2.

Table 2 - Supported DVB-T2 RF Modes

Parameters

2.4.4. HSupport for Multi PLP

The receiver device must be capable of receiving input signals in Mode B using Multiple PLP without using Common PLP.

2.4.5. Support for Multi PLP and Common PLP

The receiver device must be capable of receiving input signals in Mode B using Multiple PLP and Common PLP.

2.4.6. Support for Normal Mode

The receiver device must support Normal Mode.

2.4.7. Adaptability to Changes in Modulation Parameters

The receiver device must have the ability to automatically adapt to changes in the modulation parameters of data P1, data L1 before and after signaling. The time for the output transmission stream to reach an error-free state shall not exceed 5 seconds from the moment of change in the parameter of data P1 and/or data L1 before signaling. The time for the output transmission stream to reach an error-free state shall not exceed 2 seconds from the moment of change in the parameter of data L1 after signaling.

2.4.8. C/N Requirement for Gaussian Channel

The minimum C/N for the receiver device to meet the QEF requirement shall not exceed the corresponding value determined by expression (Eq. 1).

2.4.9. C/N Requirement for 0 dB Echo Channel

The minimum C/N for the receiver device to meet the QEF requirement with interference from a 0 dB echo channel shall not exceed the corresponding value determined by expression (Eq. 1).

2.4.10. Minimum Input Signal Level on the Gaussian Channel

The receiver device must be capable of receiving and decoding to meet the QEF requirement for input signals with levels not less than those determined by expressions (Eq. 2) (for standard signal bandwidth) and (Eq. 3) (for extended signal bandwidth) across the entire operating frequency range.

2.4.11. Minimum Input Signal Level on the 0 dB Echo Channel

The receiver device must be capable of receiving and decoding to meet the QEF requirement for input signals with levels not less than those determined by expressions (Eq. 2) (for standard signal bandwidth) and (Eq. 3) (for extended signal bandwidth) across the entire operating frequency range.

2.4.12. Noise Figure (NF) on the Gaussian Channel

The receiver device must have a noise figure (NF) not exceeding the value in Table A.7.

2.4.13. Maximum Input Signal Level

The receiver device must be capable of receiving to meet the QEF requirement when the input DVB-T2 signal level reaches -25 dBm.

2.4.14. Interference Resistance to Analog Signals in Other Channels

The receiver device must be capable of receiving to meet the QEF requirement when there is a high-power adjacent VSB/PAL carrier or analog signals on other channels outside the adjacent channel with power up to 33 dB higher or 44 dB higher respectively.

The requirements in this section apply when the receiver device receives DVB-T2 signals with the 32k mode, 256 QAM, R=4/5, Δ/Tu=1/8.

2.4.15. Interference Resistance to Digital Signals in Other Channels

On supported frequency bands, the receiver device must be capable of receiving to meet the QEF requirement when there is a DVB-T2 interfering signal causing a minimum signal-to-interference ratio (I/C) as specified in Table 3.

Table 3 - Minimum I/C Requirements for Receiving QEF with DVB-T2 Interfering Signals on Adjacent Channels, Image Channels, and Other Channels

Requirements in this section apply to DVB-T2 signals at all possible RF modes as in 2.4.3.2.4.16. Interference Resistance to Co-channel Analog TV Signals

The receiver device must be capable of receiving to meet the QEF requirement with a maximum C/I as specified in Table 4 when the 8 MHz DVB-T2 signal is interfered by a co-channel PAL D/K analog carrier including video and FM audio.

Table 4 - Interfering Signal C/I for Receiving QEF When the DVB-T2 Signal is Interfered by an Analog TV Carrier

Signal Diagram

On supported frequency bands, the receiver device must be capable of receiving to meet the QEF requirement when there is a 4G LTE 700 MHz interfering signal causing a minimum signal-to-interference ratio (I/C) as specified in Table 5 while maintaining QEF reception.The LTE signal power, both BS and UE, varies according to traffic load and type of traffic. The LTE signal power is defined as the power within the active portion of the LTE signal varying over time, called the permitted power level (I).

The I/C values must meet for the LTE signal with traffic load from 0% to 100% (BS) and for traffic load from low bit rate to high bit rate (UE). Low traffic load may be the most stringent requirement. The minimum I/C requirement must be met to cause interference to the signal level of the permitted power level within the range of -25 dBm for the UE signal and -15 dBm for the BS signal, identified as the permitted power level of the interfering signal, at the receiver input.

The requirements of this section apply to modes {32KE, 256 QAM R, PP4, R=2/3, ΔTu = 1/16, 8 MHz} and {32KE, 256 QAM R, PP4, R=3/5, Δ/Tu = 19/256, 8 MHz}.

Table 5 - Minimum I/C Requirements for Receiving QEF with 700 MHz LTE Interfering Signals on Adjacent Channels and Other Channels. The I/C values are defined for the LTE signal with a bandwidth of 9.015 MHz on the 10 MHz LTE system.

Signal Bandwidth and Channel Bandwidth [MHz]

Minimum I/C [dB] for Receiver (Deployment after 1/1/2019)

With a given echo strength, when the delay of the multipath interference changes within the range from 1.95 µs to 0.95 times the guard interval (GI) length, the minimum C/N value for the receiver device to meet the QEF requirement shall not change more than 1 dB from the median value.Carrier-to-Noise-plus-Interference ratio (C/(N+I)) when interference occurs within the protection interval in an SFN network

For DVB-T2 modes as specified in Table 2, when there is multipath interference with delay ranging from 1.95 µs to 0.95 times the length of the protection interval (Guard Interval - GI), the receiver must be capable of receiving and meeting the QEF requirement with a minimum C/N level not exceeding the value specified for Profile 2 defined by Equation (Eq. 1).

With a given level of multipath interference, when the delay of the multipath interference changes within the range of 1.95 µs to 0.95 times the length of the protection interval (Guard Interval - GI), the minimum C/N level required for the receiver to meet QEF can only vary by no more than 1 dB from the median value.

2.4.19. Carrier-to-Noise-plus-Interference ratio (C/(N+I)) requirements when multiple interferences occur outside the protection interval in an SFN network

When there is an out-of-protection-zone multipath signal with attenuation levels relative to the DVB-T2 signal as specified in Table 6, the receiver must be capable of receiving the DVB-T2 8 MHz signal meeting the QEF requirement.

Table 6 - Out-of-protection-zone multipath signals for the DVB-T2 8 MHz signal

2.4.20. BMPEG demultiplexer

2.4.20.1. Maximum data stream rate

The MPEG demultiplexer of the receiver must comply with the MPEG-2 transport layer requirements set forth in ISO/IEC 13818-1, conforming to the standard ETSI TS 101 154, and must be capable of decoding ISO/IEC 13818-1 data at a rate of 50.34 Mbit/s for DVB-T2.

2.4.20.2. Support for changing bit rate (statistical multiplexing)

The MPEG demultiplexer of the receiver must support changing bit rate within a constant bit rate transport stream.

2.4.21. Video decoder

2.4.21.1. Video-audio synchronization

The receiver must ensure that the DVB-T2 signal is decoded such that audio does not precede video by more than 20 ms and does not lag behind video by more than 20 ms.

2.4.21.2. Minimum video bit rate decoding

The receiver must be capable of decoding video signals with a resolution of 720x576 pixels and a bit rate of 600 kbps.

2.4.21.3. MPEG-2 SD decoding

a) General requirements

- The receiver must be capable of decoding 25 Hz MPEG-2 SDTV "MPEG-2 Main Profile at Main Level" according to the ISO/IEC 13818-2 standard and conforming to the requirements in ETSI TS 101 154;

- The receiver must be capable of decoding video with resolutions of 720x576, 544x576, 480x576, and 352x576;

b) Aspect ratio

The receiver must be capable of decoding 25 Hz MPEG-2 SDTV signals with aspect ratios of 4:3 and 16:9;

The receiver must support user selection of display aspect ratio conversion modes on the screen as follows:

- Displaying the full frame of a 16:9 video signal on a 4:3 screen in letterbox mode (compressing the height while maintaining the width of the screen);

- Displaying the full height and frame of a 16:9 video signal on a 4:3 screen (cutting off part of the width of the image);

- Displaying the full frame of a 4:3 video signal on a 16:9 screen in pillarbox mode (compressing the width while maintaining the height of the screen).

2.4.21.4. MPEG-4 SD decoding

a) General requirements

The receiver must be capable of decoding 25 Hz MPEG-4 SDTV "H.264/AVC Main Profile at Level 3" according to the ISO/IEC 14496-10 standard and conforming to the requirements in ETSI TS 101 154 (sections 5.5 and 5.6, applicable to 25 Hz SDTV);

The receiver must be capable of decoding video with resolutions of 720x576, 544x576, 480x576, and 352x576;

b) Aspect ratio

The receiver must be capable of decoding 25 Hz MPEG-4 SDTV "H.264/AVC Main Profile at Level 3" signals with aspect ratios of 4:3 and 16:9.

The receiver must support user selection of display aspect ratio conversion modes on the screen as follows:

- Displaying the full frame of a 16:9 video signal on a 4:3 screen in letterbox mode (compressing the height while maintaining the width of the screen);

- Displaying the full height and frame of a 16:9 video signal on a 4:3 screen (cutting off part of the width of the image);

- Displaying the full frame of a 4:3 video signal on a 16:9 screen in pillarbox mode (compressing the width while maintaining the height of the screen).

2.4.21.5. MPEG-4 HD decoding

The receiver must be capable of decoding "H.264/AVC High Profile at Level 4" according to the ISO/IEC 14496-10 standard and conforming to the requirements in the ETSI TS 101 154 standard (section 5.7 - H.264/AVC HDTV);

The receiver must support resolutions of 1920x1080i and 1280x720p.

2.4.21.6. Conversion of HD signal to SD output

STBs supporting HDTV must be capable of converting received HD signals to SD signals with a resolution of 720x576 through external interfaces (YPbPr or other interfaces). The converted SD signal must be capable of displaying in "letterbox" format 16:9 (compressing the height while maintaining the width of the screen) on a 4:3 screen.

2.4.22. Audio decoder

2.4.22.1. MPEG-1 Layer II decoding

The receiver must have a stereo audio decoder capable of meeting the minimum decoding requirements based on the MPEG 1 Layer II standard ("Musicam," ISO/IEC 11172-3) and complying with the DVB implementation guidelines for MPEG-2 systems, images, and sound in satellite, cable, and terrestrial broadcasting applications according to the ETSI TS 101 154 standard.

2.4.22.2. MPEG-4 HE-AAC decoding

The receiver must have an HE-AAC decoder that meets the following requirements:

- Capable of decoding HE-AAC Level 2 (mono, stereo) at a sampling frequency of 48 kHz according to ETSI TS 101 154, Annex H.

- Capable of decoding HE-AAC Level 4 (multi-channel, up to 5.1) at a sampling frequency of 48 kHz according to ETSI TS 101 154, Annex H.

2.4.22.3. Support for HE-AAC on HDMI output interface

If it has an HDMI port, the receiver must be capable of providing the following audio formats through the HDMI port:

- Original HE-AAC audio:

- PCM stereo from the decoded audio bitstream or downmixed;

- Multi-channel PCM from the decoded audio bitstream.

2.4.22.4. Support for HE-AAC on analog audio output interface

If it has an RCA analog audio port, the receiver must be capable of decoding and downmixing HE-AAC encoded audio to output through the RCA analog audio port.

3. MEASUREMENT METHODS

3.1. Functional Requirements

3.1.1. Display of signal quality and signal strength indicators

3.1.1.1. Measurement configuration

TS used: TS B

3.1.1.2. Measurement procedure

1. Prepare the measurement environment and configure the measuring equipment.

2. Set the measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7.

3. Configure the input signal level to the receiver to be -50 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Transmit the transport stream.

6. Perform channel scanning.

7 After scanning, one channel will be obtained.

8. Check on the receiver whether signal strength (Signal Strength) and signal quality (Signal Quality) indicators are displayed.

9. Change the input signal level from -60 dBm to -99 dBm. Observe changes in signal strength and signal quality.

3.1.1.3. Evaluation of measurement results

The measurement results are considered satisfactory if they meet the following conditions simultaneously:

1. The receiver displays information about signal strength and signal quality.

2. The signal strength and signal quality change correspondingly with the actual input signal level.

3.1.2. Service Information

3.1.2.1. Processing of PSI/SI tables

3.1.2.1.1. Measurement configuration

TS used: TS H, TS I

3.1.2.1.2. Measurement procedure

1. Prepare the measurement environment and configure the measuring equipment.

2. Set the measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7

3. Set the input signal level to the receiver to be -60 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Transmit the transport stream for testing.

6. Perform channel scanning.

7. Check the results after channel scanning.

8. Perform on remaining transmission streams.

3.1.2.1.3. Evaluate measurement results

Measurement results are deemed appropriate when they satisfy the requirements of 2.2.2.1 simultaneously.

3.1.2.2. Real-time clock

3.1.2.2.1. Measurement configuration

TS used: TS B

3.1.2.2.2. Measurement procedure

Steps to perform:

1. Prepare the measurement environment and configure the measuring equipment.

2. Set measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7.

3. Set the input signal level of the receiving device to -60 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Determine the time and date displayed within the user interface.

6. Turn on the TDT information display mode in the transmission stream.

7. Transmit the transmission stream.

8. Conduct channel scanning.

9. Check the time information displayed on channels.

10. Turn off the TDT information display mode in the transmission stream.

11. Transmit the transmission stream.

12. Conduct channel scanning.

13. Check the time information displayed on channels.

3.1.2.2.3. Evaluate measurement results

The measurement results are considered satisfactory if they meet the following conditions simultaneously:

1. For the TDT information display mode in the transmission stream: The receiving device displays the actual real-time time.

2. For the TDT information non-display mode in the transmission stream: The receiving device displays the time of the transmission stream.

3.1.2.3. EPG features for the actual EIT table and other EIT tables

3.1.2.3.1. Measurement configuration

Used TS: TS I

3.1.2.3.2. Measurement procedure

Steps to perform:

1. Prepare the measurement environment and configure the measuring equipment.

2. Set measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7.

3. Set the input signal level of the receiving device to -60 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Set measurement parameters.

6. Turn off the TDT information display mode in the transmission stream.

7. Transmit the transmission stream.

8. Conduct channel scanning.

9. Check program information.

3.1.2.3.3. Evaluate measurement results

The measurement results are considered satisfactory if they meet the following conditions simultaneously:

1. The receiving device receives the correct number of channels with the correct channel names.

2. For each channel, the receiving device displays current program information, next program information, and a seven-day program information table. Program information includes the program name, start and end times of the program, and short news (if available).

3.1.3. Program management module

3.1.3.1. Measurement configuration

Used TS: TS I

3.1.3.2. Measurement procedure

Steps to perform:

1. Prepare the measurement environment and configure the measuring equipment.

2. Set measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7.

3. Set the input signal level of the receiving device to -60 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Transmit the transport stream.

6. Perform channel scanning.

7. Check the EPG event management function.

8. Check channel program information.

3.1.3.3. Evaluate measurement results

The measurement results are considered satisfactory if they meet the following conditions simultaneously:

1. The receiving device lists channels in the channel list and performs channel list management functions such as channel scanning, channel deletion, and channel movement.

2. The receiving device displays the current time, program start/end times, channel order, event/program name, and short news (if available).

3. The receiving device displays EPG event information in the received channels. Events must be displayed in both English and Vietnamese. Vietnamese characters follow the UTF-8 encoding standard in TCVN 5712:1999 .

3.1.4. Subtitles

3.1.4.1. Measurement configuration

3.1.4.2. Measurement procedure

1. Prepare the measurement environment and install the measuring equipment.

2. Set measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7.

3. Configure the input signal level to the receiver to be -50 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Transmit the transport stream.

6. Perform channel scanning.

7. Select the Vietnamese audio channel, set the subtitle language option to Vietnamese. Check the audio channel name and the ability to display Vietnamese subtitles.

8. Switch the subtitle language option to automatic subtitle reception mode. Check the audio channel name and the ability to display Vietnamese subtitles.

9. Select the English audio channel, set the subtitle language option to English. Check the audio channel name and the ability to display English subtitles.

10. Switch the subtitle language option to automatic subtitle reception mode. Check the audio channel name and the ability to display English subtitles.

11. Select the original audio channel, set the language preference option to English first priority and Vietnamese second priority (or vice versa). Check the audio channel name and the ability to display subtitles.

12. Turn off the language preference setting. Check the audio channel name and the ability to display subtitles according to the original language.

3.1.4.3. Evaluate measurement results

The measurement results are considered satisfactory if they meet the following conditions simultaneously:

1. The receiving device receives one program channel, including English, Vietnamese audio channels, and the original language audio channel.

2. Result of Step 7: Correct channel name, subtitles displayed correctly in Vietnamese.

3. Result of Step 8: Correct channel name, subtitles displayed correctly in Vietnamese.

4. Result of Step 9: Correct channel name, subtitles displayed correctly in English.

5. Result of Step 10: Correct channel name, subtitles displayed correctly in English.

6. Result of Step 11: Correct channel name, subtitles displayed according to language preference.

7. Result of Step 12: Correct channel name, subtitles displayed according to the first available language in the list.

3.1.5. Logical channel numbering

3.1.5.1. Measurement configuration

Used TS: TS Q

3.1.5.2. Measurement procedure

1. Prepare the measurement environment and install the measuring equipment.

2. Set measurement parameters FFT Size: 32K EXT, Guard Interval: 1/128, Pilot pattern: PP7.

3. Configure the input signal level to the receiver to be -50 dBm.

4. Set the Up Converter to channel 35 (frequency 586 MHz).

5. Transmit the transport stream.

6. Perform channel scanning.

7. Check the updated logical channel numbering, sorting, and search content in the channel list.

3.1.5.3. Evaluate measurement results:

The measurement results are considered satisfactory if they meet the following conditions simultaneously:

1. For fully informative channels about LCN: The device numbers, sorts channels in the correct order in the channel list.

2. In case some channels lack LCN information: Channels without LCN information will be moved to the backup channel range from 800 to 999, while other channels retain their original channel order in the channel list.

3. In case two channels have the same LCN number: One channel will be moved to the backup channel range from 800 to 999, while the other retains its original channel order in the channel list.

3.2. Technical Requirements

3.2.1. Frequency

3.2.1.1. Measurement configuration

Used TS: TS P.

3.2.1.2. Measurement procedure

1. Set up the measuring devices.

2. Use the DVB-T2 mode corresponding to: 32k extended, 256 QAM rotated, GI 1/16, PP4, R2/3, TR-PAPR.

3. Use the input level of -50 dBm.

4. Start at frequency 178 MHz (Channel 6).

5. Use QMP1 to evaluate at the center frequency and frequencies with a deviation of -50 kHz, 50 kHz from the center frequency of the channel. Before changing the frequency and frequency deviation, disconnect the initial signal from the receiving device.

6. Repeat the measurement from Step 4 to 5 for the smallest and largest channel frequency bands of DTT.

3.2.2. Signal Bandwidth

3.2.2.1. Measurement configuration

Used TS: TS P.

3.2.2.2. Measurement procedure

1. Set up the measuring devices.

2. Use the UHF IV/V 586 MHz transmission frequency and set the receiving device input level to -50 dBm. Choose the corresponding DVB-T2 mode:

- Single PLP mode;

- UHF: 32k standard/extended, 256 QAM rotated, GI1/16, PP4, R2/3, TR-PAPR; 32k, 256 QAM, 011/128, PP7, R5/6.

3. Connect the receiver device and perform automatic or manual channel search. The search is conducted with a signal bandwidth that has a random value, not predetermined.

4. Use QMP1.

3.2.3. RF modes

3.2.3.1. Measurement configuration

Used TS: TS P.

3.2.3.2. Measurement procedure

1. Set up the measuring devices.

2. Use channel frequency 586 MHz and input level -50 dBm.

3. Measure all DVB-T2 parameter combinations listed in the tables below using QMP1.

Table 7 - Measurement of DVB-T2 modes - FFT sizes

BTable 8 - Measurement of DVB-T2 modes - Signal diagram (rotated/non-rotated)

BTable 9 - Measurement of DVB-T2 modes - Pilot pattern

BTable 10 - Measurement of DVB-T2 modes - Guard interval

BTable 11 - Measurement of DVB-T2 modes - PAPR reduction

3.2.4. Support for Multi PLP

3.2.4.1. Measurement configuration

The measurement uses the parameter settings for Mode B (Multi PLP) defined in Table A.4.

3.2.4.2. Measurement procedure

1. Configure the system.

2. Perform automatic channel search on the receiver device.

3. Check the ability to decode services in the TSs of the receiver device.

3.2.5. Support for Multi PLP and Common PLP

3.2.5.1. Measurement configuration

The measurement uses the parameter settings for Mode B (Multi PLP) defined in Table A.4.

PLP₀ corresponding to Common PLP and carrying information about the device's support capability. In this measurement, the information used is EIT and the measurement is performed to confirm that the receiver device can decode the content information used.

PLP₀ PSI/SI information, TS₁ transmitted in PLP mode₁, TS₂ transmitted in PLP mode₂.

The receiver device must be capable of decoding the service and EIT information of the two TSs used.

3.2.5.2. Measurement procedure

1. Configure the system.

2. Perform automatic channel search on the receiver device.

3. Check the ability to decode services in the TSs of the receiver device.

3.2.6. Support for Normal Mode

3.2.6.1. Measurement configuration

The measurement uses the parameter settings for Mode A (Single PLP) defined in Table 12.

Table 12 - Parameters for Mode A (Single PLP) input

3.2.6.2. Measurement procedure

1. Configure the system.

2. Perform automatic channel search on the receiver device.

3. Check the ability to decode services in the TSs of the receiver device according to QMP1.

3.2.7. Adaptability to changes in modulation parameters

3.2.7.1. Measurement configuration

Used TS: TS P.

3.2.7.2. Measurement procedure

1. Set up the measuring devices.

2. Use channel frequency 586 MHz.

3. Use DVB-T2 mode: FFT size extended 32k, 256 QAM rotated, GI 1/16, R 2/3, and signal bandwidth 8 MHz.

4. Change the transmission parameters in the P1 signaling fields as follows: FFT size: 32K, 16K, 8K, 4K, 2K, and 1K.

5. Change the transmission parameters in the L1 pre-signaling fields as follows:

- Extended bandwidth mode: yes/no;

- PAPR: none, TR;

- Guard interval: G1/32, G1/16, G1/8, G1/4, G1/128, G19/128, G19/256;

- Pilot pattern: PP2, PP4, PP6, PP7;

- Number of data symbols in the frame: 60, 62;

6. Change the transmission parameters in the L1 post-signaling fields as follows:

- Coding rate: R 3/5, R 2/3, R 3/4;

- Modulation: 256 QAM;

7. Check the adaptability to new parameter settings within the specified time period of the receiver device.

3.2.8. C/N requirements for Gaussian channel

3.2.8.1. Measurement configuration

Use Mode A (Single PLP) and parameter settings with the following requirements:

3.2.8.2. Measurement procedure

1. Set up the measuring devices.

2. Use DVB-T2 mode as follows: 32k extended, 256 QAM rotated, R2/3, GI1/128.

3. Set the Up Converter to channel 21 (frequency 474 MHz).

4. Measure the input level delivered to the attenuator.

5. Determine the attenuation and cable losses.

6. Configure the receiver device input signal level to -50 dBm.

7. Use the C/N value for the DVB-T2 mode determined by expression (Eq. 1).

8. Perform channel search.

9. Increase C/N from low to high values until QMP2 is completed.

10. Enter the measured dB values into the measurement report.

11. Repeat the measurement for the remaining frequencies, signal bandwidths, and DVB-T2 modes in the measurement report.

Table 13 - Frequencies and signal bandwidths used for measurement

NOTE: The shaded areas are modes that do not need to be measured.

3.2.9. C/N requirements for 0 dB echo channel

3.2.9.1. Measurement configuration

The 0-degree channel center must be used in the simulation (0 dB echo signal). Use the parameter settings for Mode A (Single PLP) defined in Table 14.

Table 14 - DVB-T2 mode parameters used in measurements

3.2.9.2. Measurement procedure

Check synchronization status with SFN.

1. Set up the measuring devices.

2. Use DVB-T2 mode according to: 32K extended, 256 QAM, PP7, R2/3, G1/128 and signal bandwidth 8 MHz.

3. Set Up Converter to frequency 586 MHz (Channel 35).

4. Set fading simulation equipment to echo signal 0 dB. (second path: delay 1.95 µs, phase equal to 0 at channel center and attenuation 0 dB)

5. Measure input level to the attenuator.

6. Determine the attenuation of the attenuator and cables.

7. Configure to have the input signal level to the receiver device at -50 dBm.

8. Increase C/N from low value to high value until QMP2 is completed.

9. Enter measured C/N values into the measurement report.

10. Check if the channel search has found services at the measured C/N value.

11. Repeat the measurement for the remaining DVB-T2 modes with signal bandwidth of 8 MHz as reported in the measurement report.

Table 15 - Mandatory measurements for C/N specified for echo signal 0 dB, delay 1.95 µs

3.2.10. Minimum input signal level on Gaussian channel

3.2.10.1. Measurement configuration

Use Mode A (Single PLP) and differences in parameter settings defined in Table 14.

3.2.10.2. Measurement procedureasurement procedure

1. Set up the measuring devices.

2. Use DVB-T2 mode according to: 32k extended, 256 QAM rotated, R2/3, GI1/128.

3. Set Up Converter to Channel 21.

4. Measure input level to the attenuator.

5. Determine the attenuation of the attenuator and cables.

6. Calculate the input signal level to the receiver device.

7. Perform channel search.

8. Increase input signal level to the receiver device from low value to high value until QMP2 is completed.

9. Enter measured values into the measurement report.

10. Repeat the measurement for the remaining frequencies, signal bands, and DVB-T2 modes in the measurement report.

Table 16 - Measurement report of input signal level satisfying QMP2 - DVB-T2

NOTE: The shaded areas are modes that do not need to be measured.

3.2.11. Minimum input signal level on echo 0 dB channel

3.2.11.1. Measurement configuration

Use parameter settings Mode A (Single PLP) defined in Table 14. TS used: TS P.

3.2.11.2. Measurement procedure

Check synchronization status SFN.

1. Set up the measuring devices.

2. Use DVB-T2 mode according to 32K extended, 256 QAM, PP7, R2/3, GI1/128 and information table 8 MHz.

3. Set Up Converter to frequency 586 MHz (Channel 35).

4. Set fading simulation equipment to echo signal 0 dB (delay 1.95 µs, phase equal to 0 at channel center and attenuation 0 dB for second path).

5. Determine the attenuation of the attenuator and cables.

6. Measure input level to the attenuator.

7. Calculate the input signal level to the receiver device.

8. Increase input signal level to the receiver device from low value to high value until QMP2 is completed.

9. Enter measured values into the measurement report.

10. Check if the channel search has found services on the minimum input signal level.

11. Repeat the measurement for the remaining DVB-T2 modes with signal bandwidth of 8 MHz in the measurement report.

Table 17 - Frequencies and signal tables required for measurement

NOTE: The shaded areas are modes that do not need to be measured.

3.2.12. Noise figure on Gaussian channel

Determine the minimum carrier levels C_{Maximum Downhill Gradient} for the Gaussian channel measured according to 2.4.10.

Determine C/N_{Maximum Downhill Gradient} requirement for the Gaussian channel measured according to 2.4.8.

Calculate the noise figure NF[dB] for supported frequencies according to the formula for DVB-T2 8 MHz extended signal:

NF[dB] = N + 105.1dBm = C_{Maximum Downhill Gradient} - C/N_{Maximum Downhill Gradient} + 105.1dBm

For the normal DVB-T2 8 MHz signal:

NF[dB] = N + 105.2dBm = C_{Maximum Downhill Gradient} - C/N_{Maximum Downhill Gradient} + 105.2dBm.

Table 18 - Required frequencies and signal bandwidths

3.2.13. Maximum input signal level

3.2.13.1. Measurement configuration

TS used: TS P (DVB-T2)

3.2.13.2. Measurement procedure

1. Set up measuring equipment.

2. Check the attenuator (ATT).

3. Use mode 32K ext, 256 QAM, PP2, R=4/5, ΔTu=1/8 for DVB-T2.

4. Set the UP converter to Channel 35.

5. Check the attenuator and connecting cables.

6. Turn on the receiver device.

7. Check video decoding capability.

8. Determine the relationship between input signal level to the receiver device and the attenuator value.

9. Use the attenuator to set the input signal level to the receiver device at -25 dBm.

10. Check QEF compliance using QMP1 procedure.

11. Enter measurement results into Table 19.

12. Repeat the measurement with other modes in Table 19.

Table 19 - Measurement modes to check maximum input signal level

3.2.14. Interference resistance to analog signals in other channels

3.2.14.1. Measurement configuration

Transport stream: TS P (DVB-T2).

3.2.14.2. Measurement procedure

1. Set up measuring equipment.

2. Use PAL signal with: Color bar 75%

3. Modulate the audio carrier with FM with a base frequency of 1 kHz and a modulation index of 50 kHz.

4. Check the signal levels of the DVB-T2 signal and the analog signal using a spectrum analyzer.

5. Adjust the FM carrier level to -13 dB relative to the video carrier.

6. Use DVB-T2 mode according to {32k, 256 QAM, R=4/5, Δ/Tu=1/8} and signal bandwidth 8 MHz.

7. Set the Up Converter (desired) for the DVB-T2 carrier to frequency 586.0 MHz (Channel 35)

8. Set the Up Converter (noise) for the analog TV carrier to Channel 36 (594 MHz)

9. Set the input signal level to the analog TV receiver to -25 dBm using "ATT I"

10. Reduce the DVB-T2 signal level using "ATT C" to a level where QMP2 is completed.

11. Enter the measured signal level difference between the DVB-T2 signal and the analog TV signal in dB into the measurement report.

12. Repeat the measurement for analog TV on frequency 578 MHz (Channel 34).

13. Repeat the measurement for analog TV on frequencies 570 MHz (Channel 33), 602 MHz (Channel 37) and Channel 658 MHz (Channel 44).

Table 20 - Measurement results

3.2.15. Interference resistance to digital signals on other channels

3.2.15.1. Measurement configuration

Ensure that the digital TV signal on adjacent or other channels does not cause out-of-band emission when receiving the desired digital TV signal.

Use the parameter settings of Mode A (Single PLP) defined in Table 14.

3.2.15.2. Measurement Procedure

1. Set up the measuring devices.

2. Use the DVB-T2 mode according to: {32K extended, 256 QAM rotated, PP4, R=2/3, Δ/TU=1/16} and signal bandwidth of 8 MHz.

3. Set the Up Converter channel A to frequency 586 MHz (Channel 35).

4. Set the Up Converter channel B to frequency 594 MHz (Channel 36).

5. Set the input level of the receiving device for the DVB-T2 signal on channel B to -20 dBm.

6. Reduce the DVB-T2 signal level in channel A to the level when QMP 2 is completed.

7. Enter the measured signal level difference between the signals of channel A and channel B in decibels into the measurement report.

8. Repeat the measurement when the Up Converter channel B is set to frequencies 578 MHz (Channel 34), 570 MHz (Channel 33), 602 MHz (Channel 37).

9. Repeat the measurement according to the above procedure for the video channel. Set the input level of the receiving device for the DVB-T2 signal in channel B to -20 dBm.

10. Set the Up Converter channel A to 666 MHz (Channel 45).

11. Set the Up Converter channel B to 674 MHz (Channel 46).

12. Set the input level for the DVB-T2 signal in channel B to -20 dBm.

13. Reduce the DVB-T2 signal level in channel A to the signal level when QMP 2 is completed.

14. Enter the measured signal level difference between the signals of channel A and channel B in decibels into the measurement report.

15. Repeat the measurement when the Up Converter channel B is set to frequencies 650 MHz (Channel 43), 658 MHz (Channel 44), 682 MHz (Channel 47).

16. Repeat the measurement according to the above procedure for the video channel. Set the input level of the receiving device for the DVB-T2 signal in channel B to -20 dBm.

Table 21 - Frequencies within UHF Band IV/V and Required Signal Bandwidths

BTable 22 - Frequencies within UHF Band IV/V and Required Signal Bandwidths

3.2.16. Co-channel Interference Resistance from Analog TV Signals

3.2.16.1. Measurement Configuration

The frequency offset between the carrier of the DVB-T2 signal and the carrier of the analog TV signal is 0 Hz.

The DVB-T2 source and the analog TV source must be connected to the same reference signal (10 MHz).

Use the parameter settings of Mode A (Single PLP) defined in Table 14.

3.2.16.2. Measurement Procedure

1. Set up the measuring devices.

2. Set the Up Converter for DVB-T2 to frequency 586 MHz (Channel 35).

3. Set the Up Converter for the corresponding video carrier of the analog TV to frequency 583.25 MHz (Channel 35).

4. Use the PAL signal: Color bar 75%.

5. Modulate the FM carrier with a 1 kHz audio tone with a modulation index of 50 kHz.

6. Adjust the level of the FM carrier to -13 dB relative to the video carrier.

7. Use the DVB-T2 modulation mode according to: {32K extended, PP2, 256 QAM rotated, R=3/4, Δ/TU=1/8} and signal bandwidth of 8 MHz.

8. Determine the C/I value used in the "ATT C" and "ATT I" attenuators.

9. Measure the levels of the DVB-T2 signal and the analog signal (e.g., using a spectrum analyzer or appropriate measuring instrument).

10. Set the input level of the receiving device to -50 dBm for the DVB-T2 signal.

11. Increase C/I from a low value to a high value until QMP2 is completed according to "30 s error-free video".

12. Enter C/I into the measurement report.

13. Repeat the measurement for the DVB-T2 mode: {32K extended, PP4, 256 QAM rotated, R=2/3,

14. Δ/TU = 1/16} with signal bandwidth of 8 MHz.

15. Repeat the measurement for the DVB-T2 mode: {32K extended, PP4, 256 QAM rotated, R=3/5,

16. Δ/TU = 19/256} with signal bandwidth of 8 MHz

Table 23 - Measurement Results

3.2.17. Interference Resistance to LTE 700 MHz Signals on Other Channels

3.2.17.1. Measurement Configuration

Use Mode A (Single PLP) and the parameter settings defined in Table 14.

3.2.17.2. Measurement Procedure

1. Set up the measuring devices.

2. Use the DVB-T2 mode according to: {32KE, 256 QAM R, PP4, R = 2/3, G = 1/16, 8MHz}.

3. Set the Up Converter of channel A to frequency 690 MHz (channel 48).

4. Set the Up Converter of channel B to frequency 708 MHz.

5. Set the LTE interference generator to the user equipment traffic mode.

6. Set the input level of the receiver for the LTE signal on channel B to the authorized power level -25 dBm (Note that the RMS power is measured by an average power meter sufficient to eliminate the significant power reduction to -42.7 dBm).

7. Reduce the desired signal level in channel A to the level when the quality measurement procedure in step 2 is still performed.

8. Enter the measured signal level difference between the signal of channel A and channel B (authorized power level) in decibels into the measurement report.

9. Repeat the measurement when the Up Converter of channel B is set to frequencies 718.0 MHz, 728.0 MHz.

10. Set the Up Converter of channel B to frequency 763 MHz.

11. Set the LTE interference generator to the base station traffic load mode 0%.

12. Set the input signal level of the receiver for the LTE signal in channel B to the authorized power level -15 dBm (Note that the RMS power is measured by an average power meter sufficient to eliminate the significant power reduction to -23.3 dBm).

13. Reduce the desired signal level in channel A to the level when the quality measurement procedure in step 2 is still performed.

14. Enter the measured signal level difference between the signal of channel A and channel B (authorized power level) in decibels into the measurement report.

15. Repeat the measurement when the Up Converter of channel B is set to frequencies 773.0 MHz, 783.0 MHz.

16. Repeat the measurement for the DVB-T2 mode {32KE, 256 QAM R, PP4, R=3/5, G=19/256, 8MHz}.

Table 24 - Measurement Results of Interference User Equipment Traffic Load

BTable 25 - Measurement Results of Interference Base Station Traffic Load 0%

3.2.18. C/(N+I) Requirements When There Is Interference Within the Protection Band in the SFN Network

3.2.18.1. Measurement Configuration

The typical DVB-T2 parameters in this measurement:

3.2.18.2. Procedureasurement procedure

Check synchronization status SFN.

1. Set up the measuring devices.

2. Use the DVB-T2 mode according to: {32K extended, 256 QAM, PP4, R=2/3, Δ/TU=1/16} and signal bandwidth of 8 MHz.

3. Set the Up Converter to central frequency 586 MHz (Channel 35).

4. Turn on the switch.

5. Set the input level of the receiving device to -50 dBm for the desired signal.

6. Set the delay difference related to the channel simulator to 1.95 μs for the echo signal.

7. Set the attenuation level related to the channel simulator to 0 dB for the echo signal.

8. Set C/N to the ratio at which the receiver device locks and reception cannot be performed.

9. Close the switch.

10. Increase the C/N value until QMP2 is completed.

11. Enter the required C/N value in dB into the measurement report.

12. Measure the remaining required C/N values for the -0 dB and +0 dB echo signals. Record the results in the measurement report. While changing the delay, the RF input signal must be disconnected.

13. Measure the remaining combinations (unmarked gray) of delays and related attenuations. The echo signal delay is maintained unchanged while the attenuation is changed from 21 dB to 1 dB. Find the required C/N value when reception completes QMP2. While changing the delay and attenuation, the RF input signal must be disconnected.

14. Continue measuring from step 4 by repeating the measurement for the remaining modes of DVB-T2 and 8 MHz signal bandwidth in the measurement report.

Table 26 - Measurement Results

NOTE: The shaded areas are modes that do not need to be measured.

3.2.19. Requirement for C/(N+I) outside the protection range in SFNs

3.2.19.1. Measurement Configuration

The standard DVB-T2 parameters in this measurement:

3.2.19.2. Thasurement procedure

Check synchronization status SFN.

1. Set up the measuring devices.

2. Use mode DVB-T2: {32K, 256 QAM, PP4, R=3/5, Δ/Tu=1/16} and 8 MHz signal bandwidth.

3. Set the Up Converter to 586 MHz frequency (Channel 35).

4. Turn on the switch.

5. Set the input level of the receiving device to -50 dBm for the desired signal.

6. Set the delay difference related to the channel simulator to 230 μs for the echo signal.

7. Close the switch.

6. Increase the echo signal attenuation from low to high value until QMP2 is completed.

9. Enter the echo signal attenuation result in dB into the measurement report.

10. Repeat the measurement with the remaining combinations of delays and attenuations defined in the measurement report. Open the switch before changing the delay and attenuation.

11. Repeat the measurement for the remaining DVB-T2 modes in the measurement report for 8 MHz signal bandwidth.

Table 27 - Measurement Results

NOTE: The blackened parts are the modes that do not need to be measured.3.2.20. Requirements for the MPEG demultiplexer

3.2.20.1. Maximum data stream rate

3.2.20.1.1. Measurement configuration

Data used: TS G, TS P

3.2.20.1.2. Measurement procedure

1. Prepare and connect the measurement equipment.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3. Choose the corresponding transport stream program with high data rate.

4. Check compliance using the QMP1 procedure.

3.2.20.2. Support for variable bit rate

3.2.20.2.1. Measurement configuration

TS used: TS E.

3.2.20.2.2. Measurement procedure

2. Select the program using variable bit rate from the receiver device menu.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3. Configure the measurement without using the noise generator.

4. Set the input signal level to -60 dBm.

5. Check the image for 5 minutes according to the QMP1 procedure.

3.2.21. Video decoding

3.2.21.1. Video-audio synchronization

3.2.21.1.1. Measurement configuration

TS used: TS A.

3.2.21.1.2. Measurement procedure

STB:

2. Set the input signal level of the receiver device to -50 dBm.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3. Use TS A to measure the audio-video delay.

4. Determine the audio-video delay.

5. Confirm that the audio-video delay meets the requirements.

iDTV:

2. Use subjective evaluation method QMP1 to assess the audio-video delay.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3.2.21.2. Minimum bit rate

3.2.21.2.1. Measurement configuration

TS used: TS P (DVB-T2).

3.2.21.2.2. Measurement procedure

2. Select the program from the measured data with a bit rate of 600 kbps, video resolution 720x576 containing audio.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3. Check the ability to decode images.

3.2.21.3. MPEG-2 SD decoding

3.2.21.3.1. Measurement configuration

TS used: TS H.

3.2.21.3.2. Measurement procedure

2. Select the MPEG-2 encoded television program.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3. Set the input signal level of the receiver device to -50 dBm.

4. Use TS H data and perform testing by the QMP1 method to evaluate the ability to display resolutions in Table 28.

Table 28 - MPEG-2 SDTV Decoding - Resolution

Resolution

3.2.21.4.1. Measurement configuration

3.2.21.4.2. Measurement procedure

TS used: TS B

2. Select the MPEG-4 SD encoded television program.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

4. Use TS B data and perform testing by the QMP1 method to evaluate the ability to display resolutions in Table 29.

4. Use TS H data and perform testing by the QMP1 method to evaluate the ability to display resolutions in Table 28.

Table 29 - MPEG-2 SDTV Decoding - Resolution

3.2.21.5. MPEG-4 HD decoding

3.2.21.5.1. Measurement configuration

TS used: TS M.

3.2.21.5.2. Measurement procedure

2. Select the MPEG-4 HD encoded television program.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

4. Use TS M data and perform testing by the QMP1 method to evaluate the ability to display resolutions 1920x1080i and 1280x720p.

4. Use TS H data and perform testing by the QMP1 method to evaluate the ability to display resolutions in Table 28.

3.2.21.6. Signal conversion from HD to SD output

3.2.21.6.1. Measurement configuration

3.2.21.6.2. Measurement procedure

3.2.21.5.2. Measurement procedure

2. Select the MPEG-4 HD encoded television program with resolution 1920x1080i and 1280x720p.

2. Select the 586 MHz frequency channel on the Up Converter and set the measurement parameters: FFT size 32k, 256 QAM, R=5/6, Δ/Tu=1/128 for DVB-T2.

3. Use TS M data and perform testing by the QMP1 method to evaluate the ability to display the converted SD signal on the screen.

3.2.22. Audio decoding

3.2.22.1. MPEG-1 Layer II decoding

3.2.22.1.1. Measurement configuration

TS used: TS D, TS I.

3.2.22.1.2. Measurement procedure

1. Prepare the measurement environment and install the equipment.

2. Adjust the receiver service device to only contain audio content encoded by MPEG-1 Layer II.

3. On the user interface, set the stereo output to MPEG-1 Layer II.

4. Check the sound on the stereo output and record the results.

Required Result

The receiver device decodes the MPEG-1 Layer II audio signal.

3.2.22.2. MPEG-4 HE-AAC decoding

3.2.22.2.1. Measurement configuration

The transport stream must include services with:

- HE-AAC Level 2 audio component at 48 kHz sampling rate (mono, stereo) with corresponding signaling streams.

- HE-AAC Level 2 audio component at a sampling rate of 48 kHz (mono, stereo) with corresponding signaling streams.

- The HE-AAC Level 4 audio component at a sampling frequency of 48 kHz (mono, stereo) with corresponding bitstream indicators.

Used TS: TS O.

3.2.22.2.2. Measurement Procedure

1. Set up the system.

2. Run the transport stream and select the appropriate service.

3. Check that the HDMI output has the correct bitstream format and that the audible sound is accurate.

4. Select the stereo sound mode from the menu system.

5. Check that the HDMI output has the correct bitstream format and that the audible sound is accurate for both digital and analog audio outputs at the selected bit rate and sampling rate.

6. Select the multi-channel sound mode from the menu system.

7. Check that the HDMI output has the correct bitstream format and that the audible sound is accurate for both digital and analog audio outputs at the selected bit rate and sampling rate.

3.2.22.2.3. Required Results

The receiving device decodes the HE-AAC Level 2 and 4 audio signals at a sampling frequency of 48 kHz.

3.2.22.3. Support for HE-AAC on HDMI Output Interface

3.2.22.3.1. Measurement Configuration

- HE-AAC Level 2 audio component at 48 kHz sampling rate (mono, stereo) with corresponding signaling streams.

- HE-AAC Level 2 audio component at a sampling rate of 48 kHz (mono, stereo) with corresponding signaling streams.

- The HE-AAC Level 4 audio component at a sampling frequency of 48 kHz (mono, stereo) with corresponding bitstream indicators.

Used TS: TS O.

3.2.22.3.2. Measurement Procedure

1. Set up the system.

2. Check that the HDMI output has the correct bitstream format and that the audible sound is accurate.

3. Select the stereo sound mode from the menu system.

4. Check that the HDMI output has the correct bitstream format and that the audible sound is accurate for both digital and analog audio outputs.

5. Select the multi-channel sound mode from the menu system.

6. Check that the HDMI output has the correct bitstream format and that the audible sound is accurate for both digital and analog audio outputs.

3.2.22.3.3. Required Results

When the stereo mode is set in the menu system of the receiving device, HE-AAC Level 2 stereo is decoded to PCM stereo at the HDMI output.

When the multi-channel mode is set in the menu system of the receiving device, decoding of HE-AAC Level 4 multi-channel must support all the following formats:

- Original HE-AAC;

- PCM stereo downmix;

- PCM multi-channel.

3.2.22.4. Support for HE-AAC on Analog Audio Output Interface

3.2.22.4.1. Measurement Configuration

- HE-AAC Level 2 audio component at 48 kHz sampling rate (mono, stereo) with corresponding signaling streams.

- HE-AAC Level 2 audio component at a sampling rate of 48 kHz (mono, stereo) with corresponding signaling streams.

- The HE-AAC Level 4 audio component at a sampling frequency of 48 kHz (mono, stereo) with corresponding bitstream indicators.

Used TS: TS O.

3.2.22.4.2. Measurement Procedure

1. Set up the system.

2. Select the stereo sound mode from the menu system.

3. Check that the audible sound at the analog audio output is accurate.

4. Select the multi-channel sound mode from the menu system.

5. Check that the audible sound at the analog audio output is accurate.

3.2.22.4.3. Required Results

- When the stereo mode is set in the menu system of the receiving device, HE-AAC Level 2 (stereo) decoding must be present at the analog audio interface.

- When the multi-channel mode is set in the menu system of the receiving device, HE-AAC Level 4 (multi-channel) decoding must be present at the analog audio interface.

Chapter 4. MANAGEMENT PROVISIONS

Digital terrestrial television receivers DVB-T2 within the scope of regulation as specified in Article 1.1 must comply with the technical requirements stipulated in this Standard.

5. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS

Organizations and individuals related to such equipment have the responsibility to implement conformity declarations for digital terrestrial television receivers DVB-T2 within the scope of regulation as specified in Article 1.1 and are subject to inspection by state management agencies according to current regulations.

6. IMPLEMENTATION ORGANIZATION

6.1. The Telecommunications Authority and Provincial Departments of Information and Communications are responsible for organizing guidance and managing digital terrestrial television receivers DVB-T2 according to this Standard.

6.2. This Standard replaces QCVN 63:2012/BTTTT "National Technical Regulation on Digital Terrestrial Television Receivers DVB-T2".

6.3. In case there are changes, additions, or replacements to the provisions stated in this Standard, they shall be implemented according to the new document.

6.4. During the implementation of this Standard, if any issues arise or problems occur, organizations and individuals should report them in writing to the Ministry of Information and Communications (Science and Technology Department) for guidance and resolution./.

ANNEX A

Product Name, Goods According to QCVN

Requirements for measurements

A.1. Method of Quality Measurement in DVB-T2

A.1.1. Procedure for Direct Subjective Quality Measurement

The direct subjective evaluation method is performed on the transport stream (TS) data flow. Measurement parameters are configured to ensure no more than one error in the decoded data within one hour, equivalent to the requirement that the bit error rate (BER) of the TS data stream at the input of the MPEG-2 channel demultiplexer does not exceed 10^-11.

A.1.2. Procedure for Indirect Subjective Quality Measurement 1 (QMP1)

QMP1 is carried out over a period of 15 seconds. During this time, the decoded video signal must not contain errors. If errors occur in the decoded video signal, measurement configuration parameters are adjusted so that the interval between two consecutive errors in the decoded video signal is not less than 15 seconds.

A.1.3. Procedure for Indirect Subjective or Objective Quality Measurement 2 (QMP2)

The measurement is conducted using one of the following methods:

Using the BER measurement result after the LDPC decoder performed by the receiver;

Watching the decoded video for 30 seconds.

If the BER measurement method after the LDPC decoder is used, the required BER for meeting the QEF is 10^-7. In case the BER after the LDPC decoder exceeds 10^-7 , the measurement configuration parameters are adjusted so that the received BER does not exceed 10^-7.

If the subjective evaluation method by watching the decoded video for 30 seconds is used, during this period, the decoded video signal must not contain errors. If errors occur in the decoded video signal, measurement configuration parameters are adjusted so that the interval between two consecutive errors in the decoded video signal is not less than 30 seconds.

A.2. DVB-T2 Parameters Used in Measurement Methods

Common parameters in the DVB-T2 signal configuration used in measurements are listed in Tables A.1, A.2, and A.3.

Parameters that can be changed in the DVB-T2 signal configuration used in measurements are listed in Table A.4.

In cases where the measurement uses parameters in the DVB-T2 configuration different from those listed, the changes will be specifically described in the measurement.

Table A.1 - Common Parameters in DVB-T2 Signal Configuration - Overview

NOTE: (*) The value may be permitted..

TABLE A.2 - Common Parameters in DVB-T2 Signal Configuration - Single PLP Mode

NOTE: (*) The value may be permitted..

TABLE A.3 - Common Parameters in DVB-T2 Signal Configuration - Multi PLP Mode

TABLE A.4 - Adjustable Parameters in DVB-T2 Signal Configuration

NOTE. (**) The maximum value depends on specific information in the PLP..

Characteristics of Stream Parameters

A.5.12. Transport stream TS Q for DVB-T2 measurement

TS Q consists of the following three transport streams:

TS1-LCN1.ts

H.264/10 AVC - resolution 544x576;

CBR content at 600 kbit/s - MPEG2;

H.264/10 AVC - resolution 1280 x 720p;

H.264/10 AVC - resolution 1920 x 1080p;

H.264/10 AVC - resolution 352x576+TTX;

H.264/10 AVC - resolution 352x576+TTX;

- Content LCN: full information channels numbered in sequence.

TS-LCN2.ts

A.5.4. Transport Stream D

- Data containing services:

H.264/10 AVC - resolution 1280 x 720p;

H.264/10 AVC - resolution 1920 x 1080p;

H.264/10 AVC - resolution 352x576+TTX;

H.264/10 AVC - resolution 352x576+TTX;

- Content LCN: one channel will not carry any LCN information;

TS-LCN3.ts

H.264/10 AVC - resolution 544x576;

- Data containing services:

H.264/10 AVC - resolution 1280 x 720p;

H.264/10 AVC x resolution 1920 x 1080p;

H.264/10 AVC - resolution 352x576+TTX;

H.264/10 AVC - resolution 352x576+TTX;

- Content LCN: two channels with the same LCN number.

A.6. Measurement equipment

Table A.8 lists the necessary measurement equipment to perform measurements according to the measurement method in the standard.

Table A.8 - List of equipment

HS code for DVB-T2 terrestrial digital television receivers

Provisions on the HS Code of Terrestrial Mobile Radio Equipment and Terrestrial Radio Relay Equipment

Product Name, Goods According to QCVN

Signal decoding device for terrestrial digital television using DVB-T2 technology, without interactive information function.

Bibliography

[2] NorDig Unified Requirements for Integrated Receiver Decoders for use in cable, satellite, terrestrial and managed IPTV based networks version 3.1.1, 03.09.2019.

[3] NorDig Unified Test plan for Integrated Receiver Decoders for use in cable, satellite, terrestrial and managed IPTV based networks version 3.1.1, 03.09.2019.

[4] Regional Receiver Specification - Recommendations, South East Europe-Digi.TV, Version A-1, 02/2012.

[5] Conformance Test Specification- Recommendations, South East Europe - Digi.TV, Version A-1, 02/2012.

CONTENTS

2.4.4. Support for Multi PLP

Chapter 1. GENERAL PROVISIONS

1.1. Scope of Application

1.2. Applicability

1.3. Referenced Documents

1.4. Terms and Definitions

1.5. Abbreviations

Chapter 2. TECHNICAL PROVISIONS

2.1. General Requirements

2.1.1. Requirements for Signal Reception and Decoding

2.1.2. Power Supply Requirements for STB

2.1.3. Software Upgrade

2.2. Functional Requirements

2.2.1. Display of Signal Quality Indicators and Signal Strength Indicators

2.2.2. Service Information

2.2.3. Program management module

The receiver device must have the capability to decode and display DVB subtitles transmitted according to the standard ETSI EN 300 743. The receiver device must support Vietnamese subtitles.

The receiver device must have the capability to process service information from the logical channel number (LCN) table to support numbering, sorting, and searching for channels.

2.3.1. RF Input Connector Port

The receiver device must have an RF input connector port according to the IEC 61169-2 jack type, 75 ohm impedance standard.

STBs supporting HDTV must have an HDMI interface to output video and audio signals.

STBs must have a composite video output compatible with the requirements for the PAL interface standard in IEC 48B-316 (RCA phono).

STBs must have an analog RCA audio output, jack type according to the IEC 60603-14 standard.

If there is a conditional access interface, the receiver device must have at least one CI interface compliant with the ETSI EN 50221 standard or CI Plus version 1.3 interface.

2.4.1. Channel Frequency and Bandwidth

The receiver device must be able to receive all channels provided for terrestrial digital television (DTT) within the frequency planning of the VHF/UHF band in Vietnam as shown in Table 1.

For DVB-T2, the receiver device must support both standard carrier bandwidth modes and extended carrier bandwidth modes. For DVB-T2, the receiver device must automatically follow changes in network parameter settings from the standard carrier bandwidth mode to the extended carrier bandwidth mode without any user intervention.

The receiver device must be able to receive DVB-T2 signals with parameters being any combination of the parameters in Table 2.

2.4.17. Interference resistance capability against 700 MHz LTE signals on other channels

2.4.5. Support for Multi PLP and Common PLP

2.4.6. Support for Normal Mode

2.4.7. Adaptability to Changes in Modulation Parameters

2.4.8. C/N Requirement for Gaussian Channel

2.4.9. C/N Requirement for 0 dB Echo Channel

2.4.10. Minimum Input Signal Level on the Gaussian Channel

2.4.11. Minimum Input Signal Level on the 0 dB Echo Channel

2.4.12. Noise Figure (NF) on the Gaussian Channel

2.4.13. Maximum Input Signal Level

2.4.14. Interference Resistance to Analog Signals in Other Channels

2.4.15. Interference Resistance to Digital Signals in Other Channels

The receiver device must be capable of receiving to meet the QEF requirement with a maximum C/I as specified in Table 4 when the 8 MHz DVB-T2 signal is interfered by a co-channel PAL D/K analog carrier including video and FM audio.

2.4.18. C/(N+I) requirements when interference occurs within the protection band in SFN network

2.4.19. C/(N+I) requirements when interference occurs outside the protection band in SFN network

2.4.20. MPEG demultiplexer

Appendix A (Requirements) Measurement requirements

2.4.21. Video decoder

2.4.22. Audio decoder

3. MEASUREMENT METHODS

3.1. Functional Requirements

3.1.1. Display of signal quality and signal strength indicators

3.1.2. Service Information

3.1.3. Program management module

3.1.4. Subtitles

3.1.5. Logical channel numbering

3.2. Technical Requirements

3.2.1. Frequency

3.2.2. Signal Bandwidth

3.2.3. RF modes

3.2.4. Support for Multi PLP

3.2.5. Support for Multi PLP and Common PLP

3.2.6. Support for Normal Mode

3.2.7. Adaptability to changes in modulation parameters

3.2.8. C/N requirements for Gaussian channel

3.2.9. C/N requirements for 0 dB echo channel

3.2.10. Minimum input signal level on Gaussian channel

3.2.11. Minimum input signal level on echo 0 dB channel

3.2.12. Noise figure on Gaussian channel

3.2.13. Maximum input signal level

3.2.14. Interference resistance to analog signals in other channels

3.2.15. Interference resistance to digital signals on other channels

3.2.16. Co-channel Interference Resistance from Analog TV Signals

3.2.17. Interference Resistance to LTE 700 MHz Signals on Other Channels

3.2.18. C/(N+I) Requirements When There Is Interference Within the Protection Band in the SFN Network

3.2.19. Requirement for C/(N+I) outside the protection range in SFNs

3.2.20.1. Maximum data stream rate

3.2.21.1. Video-audio synchronization

3.2.22.1. MPEG-1 Layer II decoding

Chapter 4. MANAGEMENT PROVISIONS

5. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS

6. IMPLEMENTATION ORGANIZATION

Appendix B (Requirements) HS code for DVB-T2 terrestrial digital television receivers

Appendix B (Regulatory) Harmonized System (HS) Codes for DVB-T2 Terrestrial Digital Television Receivers

Bibliography