GB/T 22450.1-2008Limits and measurement methods of electromagnetic compatibility for 900/1800MHz TDMA digital cellular telecommunications system - Part 1: Mobile station and ancillary equipment (English PDF)

3.1 Terms and Definitions

For the purposes of this Part, the following terms and definitions apply.

3.1.2 Fixed equipment

MS that is intended for operation at a fixed location and powered by AC power supply.

3.1.3 Idle mode

A kind of operating mode of MS receiver or transceiver. Under this mode, the equipment under test (EUT) has already been powered up and can provide services and also make response to the demand of setting up calls.

3.1.4 Integral antenna equipment

The antenna that such kind of equipment does not need external terminal and is a part of the equipment; the integral antenna may be internal or external antenna.

3.1.5 Port

Particular interface, of the specified equipment, with the external electromagnetic environment.

3.1.6 RXQUAL

Evaluation on received signal quality that is generated by mobile station, being taken as the basis for control and switching of radio-frequency power in mobile communication.

3.2 Abbreviations

The following abbreviations are adopted in this Part.

4.1 Universal Test Conditions and Configuration

The test shall be carried out under normal test conditions specified in the relevant product standards.

4.2 Test Arrangement

4.2.3 Test arrangement at input port of receiver

SS shall be located outside the test environment.

4.2.4 Test arrangement at output port of receiver

The audio output of EUT shall be coupled via a nonmetallic acoustic tube to an audio analyzer outside the test environment and may also adopt other feasible methods, but they shall be recorded in the test report.

4.3 Test-exempted Frequency Band

4.4 Measurement Conditions for Spurious Emissions

4.4.1 Initialization of MS operating mode

When measuring spurious emissions, the measurement shall be carried out when EUT is at the special and idle operating modes respectively.

4.5 Measurement Conditions and Arrangement for Continuous Emissions

Measurement shall be carried out at the mode that EUT generates maximum emission during normal operation.

4.6 Immunity Test Conditions and Arrangement

During the immunity test of transmitter, the transmitter shall operate at the maximum rated output power, normal test modulation shall be adopted, and communication link shall be established.

4.7 Narrow-band Response of Receiver and Transceiver

The narrow-band responses on receiver and transceiver occurring during the tests at discrete frequencies are identified by the following method.

5 Performance Criteria EMC test system Converter Anechoic chamber Acoustic tube

5.1 Performance Evaluation Method

The establishment and maintaining of communication link, the assessment of RXQUAL, the audio assessment by monitoring speech output signal level at the mobile and portable state as well as assessment of BLER when operating under the GPRS/EGPRS functions are taken as the performance criteria to ensure the basic functions of transmitter and receiver being assessed in the immunity test.

Additionally, the test shall be carried out at the idle mode of transceiver or standby mode of transmitter so as to guarantee the transmitter not generating mis-operation.

The maintaining of communication link shall be assessed through indicator which may be a part of SS or EUT.

5.2 Performance Criteria for Transmitter under Continuous Emissions

In the test, communication link shall be established and maintained.

5.3 Performance Criteria for Transmitter under Transient Emissions

In the test, communication link shall be established and maintained.

5.4 Performance Criteria for Receiver under Continuous Emissions

In the test, communication link shall be established and maintained.

5.5 Performance Criteria for Receiver under Transient Emissions

In the test, communication link shall be established and maintained.

After the test, EUT shall be able to operate normally without communication quality reduction detectable to users, user control function loss or stored data loss, and also shall maintain communication link.

5.6 Performance Criteria under Discontinuity Condition

In the test, performance degradation and function loss are allowable; EUT transmitter shall not generate unintentional transmitting at idle state.

6.1 Measurement of Emission (See Table 2)

6.2 Immunity Test (See Table 3)

7.1 Total Radiant Power

Measurement shall be carried out according to YD/T 1484; both three-dimensional test chart and total radiant power value shall be recorded in the report.

7.2 Conducted Spurious Emissions

This measurement item is applicable to EUT with permanent RF antenna connector.

Measurement shall be carried out under the typical configuration of EUT or combination of EUT with its ancillary equipment.

The measurement under the limit voltage condition will not be carried out on the EUT that cannot connect with external power supply.

7.2.1 Measurement methods

7.2.2 Limits

7.3 Radiated Spurious Emissions

This measurement item is applicable to the enclosure port of EUT.

Measurement shall be carried out under the typical configuration of EUT or combination of EUT with its ancillary equipment.

7.3.1 Measurement methods

Refer to the relevant contents in YD/T 1483 for the measurement method of this item.

7.3.1.2 Idle mode

7.4 Enclosure Port of Ancillary Equipment

This measurement item is applicable to the enclosure port of ancillary equipment.

7.4.1 Measurement methods

When the ancillary equipment is measured together with EUT, both the radiated emission and spurious emission of the transmitter/transceiver operating frequency shall be neglected but shall be recorded in the test report.

7.4.2 Limits (see Table 13 and Table 14)

7.5 Telecommunication Port

This measurement is applicable to transmitter, receiver, transceiver and their auxiliary equipment.

7.10 Transient Conducted Emissions (Input/Output Ports of DC Power

Supply)

7.10.1 Measurement methods

The test shall be carried out according to ISO 7637-2.

7.10.2 Limits

Limits for transient conducted emissions of EUT are as shown in Table 18.

8.1 Electrostatic Discharge Immunity Test

This test item is applicable to the MS for fixed, vehicular and portable use as well as its ancillary equipment.

Test shall be carried out under the typical configuration of MS or combination of MS with its ancillary equipment.

8.2 Radiated Emission Immunity Test

This test item is applicable to the MS for fixed, vehicular and portable use as well as its ancillary equipment.

8.4 Surge Immunity Test

This test item is applicable to the MS for fixed use and its ancillary equipment.

Test shall be carried out under the typical configuration of MS or combination of MS with its ancillary equipment.

8.5 Immunity Test of Conducted Emissions Induced by Radio-frequency

Fields

8.6 Immunity Test of Voltage Dips, Short Interruptions and Voltage Variation

8.6.2 Performance criteria

8.6.2.1 AC power supply performance criteria

As for the voltage dip with 30% voltage drop and 10ms duration, the following performance criteria shall be adopted.

8.6.2.2 DC power supply performance criteria

See Tables 20, 21 and 22 for the DC power supply performance criteria.

8.8 Power Frequency Magnetic Field Immunity Test

8.8.1 Test method and grade

This test item is applicable to the EUT fitted with sensor (such as CRT monitor, Hall device, electric microphone and magnetic field sensors) to magnetic field. Test method is stated in GB/T 17626.8.

8.8.2 Performance criteria

As for the transmitter, the performance criteria in 5.2 shall be adopted.

As for the receiver or the receiver as a part of transceiver, the performance criteria in 5.4 shall be adopted. […]