Circular No. 13/2024/TT-BTTTT Issuing "National Technical Regulations on Electromagnetic Compatibility for Ground Mobile Radio Equipment and Ground Radio Relay Equipment"

CIRCULAR

Issuing the "National Technical Regulation on Electromagnetic Compatibility for Ground Mobile Radio Equipment and Ground Radio Relay Equipment"
                                                     

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

On the basis of Law on Telecommunications November 24, 2023;

On the basis of Law on Radio Frequency dated November 23, 2009, and Law Amending and Supplementing Certain Provisions of the Law on Radio Frequency dated November 9, 2022;

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

Decree No. April 19, 2022 of the Government dated July 26, 2022, of the Government stipulating 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 to regulate the National Technical Regulation on Electromagnetic Compatibility for Ground Mobile Radio Equipment and Ground Radio Relay Equipment.

Article 1. Attached to this Circular is the National Technical Regulation on Electromagnetic Compatibility for Ground Mobile Radio Equipment and Ground Radio Relay Equipment (QCVN 100:2024/BTTTT).

Article 2. Effective Date

1. This Circular shall take effect from January 1, 2025.

2. Circular No. 39/2015/TT-BTTTT dated December 25, 2015, of the Minister of Information and Communications issuing the "National Technical Regulation on Electromagnetic Compatibility for Ground Radio Relay Equipment (TETRA)" shall cease to be effective from the date specified in Article 3 of this Circular regarding the implementation timeline.

Article 3. Implementation Schedule

1. From July 1, 2025, ground mobile radio equipment and ground radio relay equipment imported and produced domestically must comply with the provisions of QCVN 100:2024/BTTTT before being circulated in the market.

2. From January 1, 2025, to June 30, 2025: Enterprises, organizations, and individuals may choose to test according to QCVN 100:2015/BTTTT or QCVN 100:2024/BTTTT for conformity declaration purposes.

Article 4. Organization of Implementation

The Director of the Office, Heads of Departments under the Ministry of Information and Communications, Heads of agencies and units under the Ministry, Directors of Provincial Departments of Information and Communications, and related organizations and individuals are responsible for implementing this Circular./.

QCVN 100:2024/BTTTT

NATIONAL TECHNICAL REGULATION ON ELECTROMAGNETIC COMPATIBILITY FOR PRIVATE LAND MOBILE RADIO AND TERRESTRIAL TRUNKED RADIO

National technical regulation on Electromagnetic compatibility for Private land mobile radio and Terrestrial Trunked Radio

Table of Contents

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. Test Conditions

2.1.1. General Provisions

2.1.2. Signal Layout for Testing

2.1.3. Excluded Bands

2.1.4. Narrow Band Response for Receivers

2.1.5. Typical Modulation for Testing

2.2. Quality Assessment

2.2.1. General

2.2.2. Equipment Capable of Providing Continuous Information Connection

2.2.3. Equipment Not Capable of Providing Continuous Information Connection

2.2.4. Auxiliary Equipment

2.2.5. Equipment Classification

2.2.6. Quality Assessment of Equipment Providing Voice Channels

2.3. Quality Criteria

2.3.1. Quality Criteria for Continuous Phenomena Applicable to Transmitters (CT)

2.3.2. Quality Criteria for Sudden Phenomena Applicable to Transmitters (TT)

2.3.3. Quality Criteria for Continuous Phenomena Applicable to Receivers (CR)

2.3.4. Quality Criteria for Sudden Phenomena Applicable to Receivers (TR)

2.3.5. Quality Criteria for Independent Testing of Auxiliary Equipment

2.4. Overview of Applicability

2.4.1. Emission

2.4.2. Immunity

3. MANAGEMENT PROVISIONS

4. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS

Chapter 5. ORGANIZATION OF IMPLEMENTATION

Appendix A (Reference) Examples of Radio Equipment within the Scope of the Regulation

Appendix B (Regulatory) Regulations on HS Codes for Ground Mobile Radio Equipment and Ground Radio Relay Equipment

Bibliography

Foreword

QCVN 100:2024/BTTTT replaces QCVN 100:2015/BTTTT.

The technical requirements and measurement methods of QCVN 100:2024/BTTTT are based on the European Telecommunications Standards Institute (ETSI) standard ETSI EN 301 489-5 V2.2.1 (2019-04).

QCVN 100:2024/BTTTT was compiled by the Frequency Management Department, reviewed by the Science and Technology Department, and approved by the Minister of Information and Communications through Circular No. 13/2024/TT-BTTTT dated October 25, 2024.

NATIONAL TECHNICAL REGULATION ON ELECTROMAGNETIC COMPATIBILITY FOR PRIVATE LAND MOBILE RADIO AND TERRESTRIAL TRUNKED RADIO

National technical regulation on Electromagnetic compatibility for Private land mobile radio and Terrestrial Trunked Radio

Chapter 1. GENERAL PROVISIONS

1.1. Scope of Application

This regulation specifies electromagnetic compatibility (EMC) requirements for digital and analog ground mobile radio equipment, ground radio relay equipment, and auxiliary equipment.

Technical parameters related to antenna ports and emissions from housing ports of ground mobile radio equipment and ground radio relay equipment are not covered by this regulation but will be regulated in corresponding product standards to effectively utilize radio frequency spectrum.

This regulation specifies test conditions, quality assessment criteria, and quality criteria for electromagnetic compatibility for ground mobile radio equipment, ground radio relay equipment, and auxiliary equipment.

Examples of ground mobile radio equipment and ground radio relay equipment are listed in Appendix A. HS codes for equipment within the scope of this regulation are specified in Appendix B.

In case of discrepancies (for example, related to special conditions, definitions, abbreviations) between this regulation and QCVN 18:2022/BTTTT this regulation shall prevail.

The environmental conditions and emission and immunity requirements specified in this regulation are referenced from QCVN 18:2022/BTTTT, except for specific conditions provided in this regulation.

1.2. Applicability

This regulation applies to domestic and foreign organizations and individuals engaged in production, business, and operation of equipment within the scope of this regulation on the territory of Vietnam.

1.3. Referenced Documents

QCVN 18:2022/BTTTT, National Technical Regulation on Electromagnetic Compatibility for Wireless Telecommunication Equipment.

ETSI EN 300 394-1 (V3.3.1) (04-2015): "Terrestrial Trunked Radio (TETRA); Conformance testing specification; Part 1: Radio".

ETSI EN 300 395-2 (V1.3.1) (01-2005): "Terrestrial Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 2: TETRA codec".

ETSI EN 302 561 V2.1.1 (2016-03): "Land Mobile Service; Radio equipment using constant or non-constant envelope modulation operating in a channel bandwidth of 25 kHz, 50 kHz, 100 kHz or 150 kHz; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

ETSI EN 300 086 V2.1.2 (2016-08): “Land Mobile Service; Radio equipment with an internal or external RF connector intended primarily for analogue speech; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

ETSI I-ETS 300 219/A1 ed.1 (1996-11): "Radio Equipment and Systems (RES); Land mobile service; Technical characteristics and test conditions for radio equipment transmitting signals to initiate a specific response in the receiver".

ETSI EN 300 113 V3.1.1 (2020-06): "Land Mobile Service; Radio equipment intended for the transmission of data (and/or speech) using constant or non-constant envelope modulation and having an antenna connector; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

ETSI EN 300 296 V2.1.1 (2016-03): "Land Mobile Service; Radio equipment using integral antennas intended primarily for analogue speech; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

ETSI EN 300 341 V2.1.1 (2016-03): "Land Mobile Service; Radio equipment using an integral antenna transmitting signals to initiate a specific response in the receiver; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

ETSI EN 300 390 V2.1.1 (2016-03): "Land Mobile Service; Radio equipment intended for the transmission of data (and speech) and using an integral antenna; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

ETSI EN 301 166 V2.1.1 (2016-11): "Land Mobile Service; Radio equipment for analogue and/or digital communication (speech and/or data) and operating on narrow band channels and having an antenna connector; Harmonised Standard covering the essential requirements of Article 3.2 of the Directive 2014/53/EU".

1.4. Terms and Definitions

Using the terms defined at QCVN 18:2022/BTTTT.

1.5. Abbreviations

Chapter 2. TECHNICAL PROVISIONS

2.1. Test Conditions

2.1.1. General Provisions

The tests must be conducted under the test conditions specified in Appendix A of QCVN 18:2022/BTTTT. Other relevant test conditions for PMR equipment are set forth in this standard.

For emission and immunity tests, the test signal configuration, test setup will apply the provisions from 2.1.2 to 2.1.5 of this standard.

2.1.2. Signal Layout for Testing

2.1.2.1. Test signal arrangement at the transmitter input

In accordance with A.2.2, QCVN 18:2022/BTTTT.

2.1.2.2. Test signal arrangement at the transmitter output

In accordance with A.2.3, QCVN 18:2022/BTTTT with the following modification:

The transmitter must operate at its maximum rated RF output power, modulated in the normal test mode (see 2.1.5).

2.1.2.3. Test signal arrangement at the receiver input

In accordance with A.2.4, QCVN 18:2022/BTTTT with the following modification:

At the start of testing and throughout the testing process, a connection must be established and maintained.

2.1.2.4. Test signal arrangement at the receiver output

In accordance with A.2.5, QCVN 18:2022/BTTTT.

2.1.2.5. Test signal arrangement for the transmitter and receiver together (as a system)

The transmitter and receiver may be tested for immunity as a system when combined as a transceiver. In such cases, the transceiver or the transmitter and receiver must be placed within the test environment and simultaneously exposed to the immunity test signals.

For dual transceivers or transceivers and receivers operating on the same frequency, the desired output signal of the transmitter can be used through an appropriate attenuator and fed to the receiver input as a desired reception signal.

For immunity tests of dual transceivers, the EUT is configured in repeat mode, in accordance with the above conditions.

2.1.3. Excluded Bands

2.1.3.1. Exclusion band for the receiver or the receiving part in the transceiver

The exclusion band for the receiver and the receiving part in the transceiver is a range of frequencies determined based on the operating band, which is published by the manufacturer:

• The lower frequency of the exclusion band is the lowest frequency obtained by subtracting 5% of the center frequency of the operating band or 10 MHz from the lower frequency of the operating band, whichever results in the lowest frequency.

• The upper frequency of the exclusion band is the highest frequency obtained by adding 5% of the center frequency of the operating band or 10 MHz to the upper frequency of the operating band, whichever results in the highest frequency.; depending on which value will result in the highest frequency.

The operating bandwidth is the widest frequency range that the receiver can operate without requiring programming or rearrangement.

NOTE: The exclusion band segments of the receiver must be consistent with the blocking range during testing.

2.1.3.2. Exclusion Band for Transmitters

The exclusion band for transmitters is the frequency range extended on both sides of the transmitter's nominal operating frequency by ±25 kHz.

For TETRA equipment, the exclusion band for transmitters is the frequency range extended on both sides of the transmitter's nominal operating frequency by ±50 kHz.

2.1.4. Narrow Band Response for Receivers

Narrowband responses occurring on the receiver or the receiving part of the transceiver (duplex) during immunity testing at discrete frequencies are narrowband responses (false responses) determined according to the following method.

If during testing, the RF immunity test signal (see 2.2.3 and 2.2.6, QCVN 18:2022/BTTTT) causes the non-compliance of the receiver or the receiving part of the transceiver with specific criteria (see 2.3), this non-compliance must be determined as either a narrowband response or a broadband phenomenon. Therefore, the frequency of the test signal is increased by twice the nominal 6 dB bandwidth of the IF filter immediately preceding the receiver or the receiving part of the transceiver, or if appropriate, the bandwidth of the device used for operation is determined according to the manufacturer. The test is repeated with the test signal frequency reduced by the same amount. If the receiver or the receiving part of the transceiver complies with the specific criteria in one or both frequency offset cases, the response is considered a narrowband response.

If the receiver or the receiving part of the transceiver still does not comply with the specific criteria in one or both frequency offset cases, it may be that the frequency offset performed corresponds to another narrowband response at the frequency of the unwanted signal. In this case, the procedure above is repeated with the test signal frequency increased or decreased by 2.5 times the reference bandwidth above.

If the receiver or the receiving part of the transceiver still does not comply with the specific criteria in one or both frequency offset cases, the phenomenon is considered broadband and therefore the device fails the EMC test.

For immunity testing, narrowband responses must be disregarded.

2.1.5.1. Overview

2.1.5. Typical Modulation for Testing

The manufacturer provides the modulation/demodulation test equipment.

The test signal generator (modulator) must be capable of generating a continuous data stream or a repeating message.

The test signal receiver (demodulator) must be capable of displaying the bit error rate (BER) of the continuous data stream or the content of the received message.

2.1.5.2. Analog Voice Equipment

2.1.5.2.1. Angle Modulated Equipment

The desired input signal of the receiver must be set at the receiver's nominal frequency, modulated by a 1 000 Hz sine wave tone at 60% deviation from peak;

• The transmitter of the EUT must be modulated by a 1 000 Hz sine wave tone at 60% deviation from peak.

• 2.1.5.2.2. Non-Angle Modulated Equipment

• The desired input signal of the receiver must be set at the receiver's nominal frequency, modulated by a 1 000 Hz sine wave tone to indicate normal operation;

• The transmitter of the EUT must be modulated by a 1 000 Hz sine wave tone to indicate normal operation; • Details regarding the modulation used must be recorded in the test report.

2.1.5.3. Digital Voice Equipment

• The desired input signal of the receiver must be set at the receiver's nominal frequency, the receiver operating normally with a signal modulated according to the manufacturer's specifications, conforming to the radio equipment standard; • The transmitter operates normally with a signal modulated according to the manufacturer's specifications, conforming to the radio equipment standard;

• The manufacturer may have to provide the modulation/demodulation test equipment;

• Details regarding the modulation used must be recorded in the test report.

2.1.5.4. Non-Voice Equipment (data, specific response, etc.)

• The desired input signal of the receiver must be set at the receiver's nominal frequency, modulated with a test signal specified by the manufacturer, which operates normally in accordance with the radio equipment standard;

2.1.5.5. TETRA Equipment

The desired input signal of the receiver must be set at a frequency close to the center frequency of the receiver's operating bandwidth, modulated by one of the listed test signals, and the transmitter must be set at a frequency close to the center frequency of the transmitter's operating bandwidth, modulated by one of the listed test signals:

For voice equipment, the voice traffic channel (TETRA TCH/S) follows ETSI EN 300 395-2 corresponding to a single-tone 1 020 Hz signal at a level 17 dB below the peak level;

2.1.5.4. Non-Voice Equipment (data, specific response, etc.)

• The desired input signal of the receiver must be set at the receiver's nominal frequency, modulated with a test signal specified by the manufacturer, which operates normally in accordance with the radio equipment standard;

2.1.5.5. TETRA Equipment

• For DMO or V+D non-voice equipment, a T1 TCH/7.2 test signal following 5.3 of ETSI EN 300 394-1;

• For DMO or V+D non-voice equipment, a T1 SCH/F test signal following 5.3 of ETSI EN 300 394-1;

• • For equipment capable of voice operation, a voice traffic channel (TETRA TCH/S) following ETSI EN 300 395-2 corresponding to the silent state;

• For voice and/or data equipment connected to auxiliary devices for data operation or connected to auxiliary devices capable of direct connection to a data application, the BER or MER test method must be agreed between the testing organization and the manufacturer.

In accordance with Appendix E,

For radio equipment or radio equipment tested in combination with auxiliary equipment, typical test arrangements, modulation methods... must be applied.

If the radio equipment cannot establish a continuous information connection and/or in the case where the auxiliary equipment is tested independently, the manufacturer of the equipment must specify the minimum acceptable quality level or quality degradation

2.2. Quality Assessment

2.2.1. General

and/or after the EMC test process. QCVN 18:2022/BTTTT.

2.2.2. Equipment Capable of Providing Continuous Information Connection

For radio equipment or radio equipment tested in combination with auxiliary equipment, typical test modulation, test arrangements..., must be applied.

2.2.3. Equipment Not Capable of Providing Continuous Information Connection

If the radio equipment cannot establish a continuous information connection and/or in the case where the auxiliary equipment is tested independently, the manufacturer of the equipment must specify the minimum acceptable quality level or quality degradation level during and/or after the EMC testing process.

The manufacturer must define the testing method to assess the actual quality level or the quality degradation during and/or after the EMC testing process. The manufacturer must provide the following additional information for inclusion in the test report:

• The functions of the relevant EUT type during and after the EMC testing;

• The required functions of the relevant EUT type must comply with the accompanying documentation;

• The pass/fail criteria of the relevant EUT type;

• The method for monitoring the actual quality level and/or the actual quality degradation of the EUT;

• The duration of the test phenomenon at each frequency must not be less than the time necessary for the EUT to operate and be capable of responding.

The assessment of the actual quality level or actual quality degradation conducted during and/or after the EMC testing must be simple but must also provide a basis to ensure that the main functions of the equipment are operational.

2.2.4. Auxiliary Equipment

According to the manufacturer's announcement, auxiliary equipment tested and evaluated:

• Shall apply the provisions of this Standard:

- Per individual auxiliary equipment; or

- As a combination of auxiliary equipment and radio equipment;

• Shall apply other applicable EMC standards.

In each case, compliance allows the auxiliary equipment to be used with different receivers, transmitters, or transceivers.

2.2.5. Equipment Classification

For the purpose of evaluating EMC quality in this Standard, the radio equipment and/or related auxiliary equipment tested must be classified into one of the following three types:

• Fixed-use equipment (e.g., base station equipment); or

• Equipment used on transport means (e.g., mobile equipment); or

• Hand-held equipment (e.g., hand-held devices).

See the definitions in Clause 1.4 of this standard.

This classification determines the extent of application of EMC tests. However, the following guidelines must also be applied to multi-functional radio equipment and/or auxiliary equipment.

• Radio equipment and/or auxiliary equipment intended for portable use or combinations thereof powered from the vehicle battery must be considered as equipment for transport means.

• Radio equipment and/or auxiliary equipment intended for portable use, for transport means, or combinations thereof powered from AC mains or DC networks must be considered as fixed-use equipment.

For multi-functional radio equipment and/or auxiliary equipment, more requirements for testing equipment listed in Table 1 and Table 4 of QCVN 18:2022/BTTTT.

2.2.6. Quality Assessment of Equipment Providing Voice Channels

2.2.6.1. Introduction

Voice quality evaluation using the interference method specified in 2.2.6.2 or the distortion method specified in 2.2.6.3.

2.2.6.2. Evaluation of voice channel using the interference method

Measurement applies only to equipment capable of voice communication. Voice channels must be in ready mode.

Establish a link connection using a TETRA transceiver system simulator or a measuring device (hereinafter referred to as "test system"). The test unit and the equipment manufacturer must agree on the desired RF signals.

The EUT in transmit/receive mode must meet the following conditions:

• Must establish The EUT operates at maximum transmission power;

• Before testing, the reference level of the voice output signal on both uplink and downlink directions of the measuring device must be recorded, see Figure 2. The reference level at the ear reference point (ERP) must be 0 dBPa at 1020 Hz or +5.0 dBPa at the speaker for the downlink direction and -5 dBPa at the mouth reference point (MRP) at 1020 Hz or at the microphone for the uplink direction. These defined sound pressure levels need to match the types of TETRA equipment and other sound measurement arrangements;

• The level of the voice output signal from the EUT's downlink channel at the mobile or handheld device's earpiece must be determined by measuring the sound pressure level (SPL), see Figure 1;

• Measure the level of the restored voice channel uplink signal from the test system. Background noise must be minimized for the microphone. NOTE: In the case of mobile device measurement, ERP is the speaker and MRP is the microphone.

Figure 1 - Measurement diagram - Interference method

NOTE 1: During calibration for the uplink direction, the EUT is present, but during calibration for the downlink direction, the EUT is absent.

NOTE 2: When the EUT has a speaker, the reference level must be +5.0 dBPa at 1020 Hz.

Figure 2 - Calibration diagram - Interference method

2.2.6.3. Evaluation of voice channel using the distortion method

Establish a loopback information link through the TETRA test system. The laboratory and the equipment manufacturer must agree on the desired RF signals:

Measurement applies only to equipment capable of voice communication. Voice channels must be in ready mode.

• Must establish the EUT operating at maximum transmission power; • Must establish a connection between the EUT and the test system. In this system, the uplink signal received from the EUT is repeated back to the EUT as a downlink signal. The repetition in the test system must maintain the repeated signal in digital form or in some way so that the repeated signal does not change.

• Apply a 1020 Hz signal level within the dynamic range of the microphone voice channel at the mouth reference point (MRP).

• After being repeated, the audio signal is recorded at the ear reference point (ERP) using an acoustic coupler without a metal tube. The signal from the acoustic coupler is sent to a distortion analyzer placed outside the test environment.

• Minimize background noise for the EUT's microphone or the acoustic coupler at the ear reference point (ERP).

The equipment must meet the minimum quality criteria as specified in 2.3.1, 2.3.2, 2.3.3, and 2.3.4.

The establishment of the link connection at the beginning of the test is maintained and the restored signal will be used as quality criteria to evaluate the basic functions of the equipment during and after the measurement. background noise for the EUT microphone or sound converter at the reference ear point (ERP).

2.3. Quality Criteria

The equipment must meet the minimum quality criteria as specified in 2.3.1, 2.3.2, 2.3.3 and 2.3.4.

The initial transmission connection setup at the beginning of the test is maintained and the restored signal evaluation will serve as quality criteria to assess the basic functions of the equipment during and after measurement.

If a device has special characteristics and quality criteria specified in the following items are not met, the device manufacturer must publish an alternative technical specification for the accepted level of quality or quality degradation. Record this technical specification in the test report and device description documents and accompanying documents.

The equipment must meet the minimum quality criteria as specified in 2.3.1, 2.3.2, 2.3.3 and 2.3.4.

Handheld devices powered by batteries on transport vehicles must meet the requirements for mobile devices used on transport vehicles. QCVN 18:2022/BTTTT for mobile devices used on transport vehicles.

Handheld or mobile devices powered from AC mains supply must meet the applicability requirements for base station equipment, although measurements are only made on the input/output ports of the device, the corresponding quality criteria for the equipment classification must be applied. QCVN 18:2022/BTTTT for base station equipment although the measurements are only performed on the device's input/output ports, the corresponding equipment classification quality criteria must be applied.

2.3.1. Quality Criteria for Continuous Phenomena Applicable to Transmitters (CT)

For voice devices, signal distortion must be measured during each measurement process, and the distortion must not exceed 25% when separated by a 3 dB bandwidth filter ranging from 300 Hz to 3 kHz without using weighted noise filters.

For devices tested with continuous bit streams, bit errors must not exceed 1×10^-2_.

For non-voice equipment, four out of five messages or 90% of the total number of transmitted messages must be received correctly.

Upon completion of all measurements, the EUT must operate as intended, without losing initial functions or device data storage, and communication links must be maintained throughout the testing process.

When the EUT is solely a transmitter, measurements must be repeated with the EUT in standby mode to ensure that unintended transmission does not occur.

2.3.2. Quality Criteria for Sudden Phenomena Applicable to Transmitters (TT)

After each measurement, the EUT must function normally, and the user must not notice any signs of communication link loss.

After completing all measurements, the EUT must operate as intended without losing control functions or data storage as published by the manufacturer, and communication links must be maintained during the testing process.

When the EUT is solely a transmitter, measurements must be repeated with the EUT in standby mode to ensure that unintended transmission does not occur.

2.3.3. Quality Criteria for Continuous Phenomena Applicable to Receivers (CR)

For voice devices, signal distortion must be measured during each measurement process, and the distortion must not exceed 25% when separated by a 3 dB bandwidth filter ranging from 300 Hz to 3 kHz without using weighted noise filters.

For devices tested with continuous bit streams, bit errors must not exceed 10^-2.

For non-voice equipment, four out of five messages or 90% of the total number of transmitted messages must be received correctly.

Upon completion of all measurements, the EUT must operate as intended, without losing initial functions or device data storage, and communication links must be maintained throughout the testing process.

In the case where the EUT is a transceiver, under no circumstances should the transmitter operate unintentionally during the testing process.

2.3.4. Quality Criteria for Sudden Phenomena Applicable to Receivers (TR)

After each measurement, the EUT must function normally, and the user must not notice any signs of communication link loss.

After completing all measurements, the EUT must operate as intended without losing control functions or data storage as published by the manufacturer, and communication links must be maintained during the testing process.

In the case where the EUT is a transceiver, under no circumstances should the transmitter operate unintentionally during the testing process.

2.3.5. Quality Criteria for Independent Testing of Auxiliary Equipment

If auxiliary equipment designed for independent testing does not comply with the quality criteria described in 2.3.1 and 2.3.2, the manufacturer must declare (to be included in the test report) technical specifications for the accepted level of quality or quality degradation before and/or after immunity tests. Quality specifications must be reflected in product descriptions and technical documentation. The relevant technical specifications mentioned in 2.2.3 must also be considered.

Quality criteria established by the manufacturer must provide the same level of immunity protection as required in 2.3.1 and 2.3.2.

2.4. Overview of Applicability

2.4.1. Emission

2.4.1.1. Overview

Table 1, QCVN 18:2022/BTTTT lists the emission EMC measurement procedures for radio devices and/or auxiliary equipment.

2.4.1.2. Special Provisions

No special provisions apply to terrestrial mobile radio (PMR) devices within the scope of this Standard.

2.4.2. Immunity

2.4.2.1. Overview

Table 4, QCVN 18:2022/BTTTT lists the immunity EMC measurement procedures for radio devices and/or auxiliary equipment.

2.4.2.2. Special Provisions

Special provisions for TETRA equipment regarding immunity testing methods and quality criteria are applied in the following Table 1:

Table 1 - Special Provisions for EMC Immunity Testing of TETRA Equipment

3. MANAGEMENT PROVISIONS

3.1. Terrestrial mobile radio devices and terrestrial radio relay devices within the scope of regulation in Article 1.1 must comply with the provisions of this Standard.

3.2. Terrestrial mobile radio devices and terrestrial radio relay devices within the scope of this Standard must undergo conformity declaration.

3.3. Measurement instruments and equipment: Comply with legal regulations on metrology.

4. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS

4.1. Radio devices within the scope of regulation in Article 1.1 must comply with technical regulations in this Standard.

4.2. Conformity declaration for devices within the scope of this Standard shall be carried out according to the conformity declaration assessment method in Article 4.3 and current regulations.

4.3. Conformity Declaration Assessment Method

Conducted in accordance with one of the three methods prescribed in Circular No. 28/2012/TT-BKHCN and amendments, supplements, and replacements to Circular No. 28/2012/TT-BKHCN below:

- Method 1: Typical sample testing.

- Method 5: Typical sample testing and production process evaluation; monitoring through production site or market sampling combined with production process evaluation.

- Method 7: Batch product testing and evaluation.

Chapter 5. ORGANIZATION OF IMPLEMENTATION

5.1. The Telecommunications Administration, the Radio Frequency Management Department, and Provincial Departments of Information and Communications are responsible for guiding and organizing the implementation of quality management of terrestrial mobile radio devices and terrestrial radio relay devices in accordance with this Standard.

5.2. In cases where the provisions set forth in this Standard are changed, supplemented, or replaced, they shall be implemented according to the new document.

5.3. During the implementation of this Technical Regulation, if any issues arise or difficulties occur, organizations and individuals involved shall reflect them in writing to the Ministry of Information and Communications (Science and Technology Department) for guidance and resolution./.

ANNEX A

(For reference)

Examples of radio equipment within the scope of this Technical Regulation

A.1. Introduction

The provisions of this Technical Regulation apply to terrestrial mobile radio equipment and related auxiliary equipment for use in mobile terrestrial operations. The following sections list terrestrial mobile radio equipment (PMR) and terrestrial radio relay equipment.

A.2. PMR Equipment with Detachable Antennas

This Technical Regulation applies to terrestrial mobile radio equipment using constant-envelope modulation operating in the frequency range from 30 MHz to 1 000 MHz, with channel spacings of 12.5 kHz and 25 kHz:

• PMR equipment primarily used for analog voice communication, see ETSI EN 300 086;

• PMR equipment and the non-voice portion of combined voice/non-voice equipment, used for transmitting non-voice data to initiate a specific response in the receiver, see ETSI I-ETS 300 219;

• Digital PMR equipment or combined analog/digital PMR equipment and auxiliary equipment designed for data and/or voice transmission, see ETSI EN 300 113.

A.3. PMR Equipment with Integrated Antennas

This Technical Regulation applies to terrestrial mobile radio equipment using constant-envelope modulation operating in the frequency range from 30 MHz to 1 000 MHz, with channel spacings of 12.5 kHz and 25 kHz:

• PMR equipment primarily used for analog voice communication, see ETSI EN 300 296;

• PMR equipment and the non-voice portion of combined voice/non-voice equipment, used for transmitting non-voice data to initiate a specific response in the receiver, see ETSI EN 300 341;

• Digital PMR equipment or combined analog/digital PMR equipment and auxiliary equipment designed for data and/or voice transmission, see ETSI EN 300 390.

A.4. Narrowband PMR Channel Equipment with Detachable Antennas

This Technical Regulation also applies to radio equipment operating in the frequency range from 30 MHz to 3 GHz, with narrow channel spacing (less than 10 kHz) and accompanying auxiliary equipment:

• PMR equipment used for transmitting voice/data and/or digital data, with narrow channel spacing (less than 10 kHz and permitted by CEPT) using fixed or non-fixed envelope modulation, see ETSI EN 301 166;

A.5. Mobile Telephones, Base Stations, and Mobile Equipment of Terrestrial Trunked Radio (TETRA) Systems

This Technical Regulation applies to TETRA terrestrial radio relay equipment mentioned in ETSI EN 302 561. It includes the following types of equipment:

• Mobile telephone (MS); • Base station equipment (BS);

• Direct mode mobile telephone (DM-MS);

• DW mobile telephone (DW-MS);

• Direct mode gateway equipment (DM-GATE);

• Direct mode repeater equipment (DM-REP);

• Direct mode repeater/gateway equipment (DM-REP/GATE);

• Repeater equipment in direct mode (TMO-REP);

• Mobile equipment of TETRA radio communication systems.

ANNEX B (Provisions)

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

Product Name, Goods According to QCVN

Product Description, Goods Description

Bibliography

 [1] ETSI EN 301 489-5 V2.2.1 (2019-04): ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 5: Specific conditions for Private land Mobile Radio (PMR) and ancillary equipment (speech and non-speech) and Terrestrial Trunked Radio (TETRA); Harmonised Standard covering the essential requirements of Article 3.1(b) of Directive 2014/53/EU.