GA/T 1255-2016 English PDF (GAT1255-2016)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GA/T 1255-2016
Historical versions: GA/T 1255-2016
Preview True-PDF (Reload/Scroll if blank)

GA/T 1255-2016: Police digital trunking communication system Technical requirements and measurement methods for radio frequency equipment
GA/T 1255-2016
GA
PUBLIC SECURITY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 33.060.01
A 90
Police Digital Trunking Communication System - Technical
Requirements and Measurement Methods for Radio
Frequency Equipment
ISSUED ON: SEPTEMBER 8, 2016
IMPLEMENTED ON: SEPTEMBER 8, 2016
Issued by: The Ministry of Public Security of the People’s Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms, Definitions, Symbols and Abbreviations ... 7
3.1 Terms and Definitions ... 7
3.2 Symbols and Abbreviations ... 10
4 Classification ... 10
5 Requirements ... 11
5.1 RF Performance Requirements ... 11
5.2 Electromagnetic Compatibility Requirements ... 13
5.3 Electrical Safety Requirements ... 14
5.4 Environmental Adaptability Requirements ... 14
6 RF Performance Parameter Test Conditions and Test Methods ... 17
6.1 RF Performance Parameter Test Conditions ... 17
6.2 Transmitter RF Performance Parameter Test Methods... 19
6.3 Receiver RF Performance Parameter Test Methods ... 26
7 Electromagnetic Compatibility Test Methods ... 34
7.1 Conducted Disturbance ... 34
7.2 Radiated Disturbance ... 34
7.3 Electrostatic Discharge Immunity ... 34
7.4 RF Electromagnetic Field Radiation Immunity ... 34
7.5 Electrical Fast Transient Pulse Group (Power Port) Immunity ... 35
7.6 Surge (Power Port) (Impact) Immunity ... 35
7.7 Conducted Disturbance Immunity of RF Induction (Power Port) ... 35
7.8 Immunity to Voltage Sags, Short Interruptions and Voltage Variations (Power Port) ... 35
8 Electrical Safety Test Methods ... 35
9 Environmental Adaptability Test Methods ... 35
9.1 Test Methods for Mechanical Environmental Adaptability ... 35
9.2 Test Methods for Climate and Environmental Adaptability ... 37
9.3 Test Methods for Enclosure Protection Level ... 40
9.4 Test Methods for Adaptability to Hazardous Environments ... 40
Appendix A (normative) Test Sites and Site Layout Guide for Radiation Test ... 41
Appendix B (normative) General Test Methods for Radiated Spurious Emissions... 44
Police Digital Trunking Communication System - Technical
Requirements and Measurement Methods for Radio
Frequency Equipment
1 Scope
This Standard stipulates the terms, definitions, symbols and abbreviations, classification,
requirements and measurement methods for radio frequency equipment of the police digital
trunking communication system.
This Standard is applicable to the transceiver stations, mobile stations and portable stations of
the police digital trunking communication system, as well as their related systems and other
equipment.
2 Normative References
The following documents are indispensable to the application of this document. In terms of
references with a specified date, only versions with a specified date are applicable to this
document. In terms of references without a specified date, the latest version (including all the
modifications) is applicable to this document.
GB/T 2423.1-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test
Methods - Tests A: Cold
GB/T 2423.2-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test
Methods - Tests B: Dry Heat
GB/T 2423.3-2006 Environmental Testing for Electric and Electronic Products - Part 2:
Testing Method - Test Cab: Damp Heat, Steady State
GB/T 2423.5-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test
Methods - Test Ea and Guidance: Shock
GB/T 2423.8-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test
Methods - Test Ed: Free Fall
GB/T 2423.10-2008 Environmental Testing for Electric and Electronic Products - Part 2: Tests
Methods - Test Fc: Vibration (Sinusoidal)
GB/T 2423.17-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test
Methods - Test Ka: Salt Mist
The electrical fast transient pulse group (power port) immunity of the transceiver station shall
comply with the requirements of test level 3 in GB/T 17626.4-2008. During the test, the
transceiver station allows temporary loss or reduction of functions or performance. After the
test is stopped, the transceiver station shall be able to resume normal operating state by itself
without human intervention.
5.2.6 Surge (power port) (impact) immunity
The surge (impact) immunity of the transceiver station using AC power supply shall comply
with the requirements of test level 3 in GB/T 17626.5-2008. The surge (impact) immunity of
the transceiver station using DC power supply shall comply with the requirements of test level
2 in GB/T 17626.5-2008. During the test, the transceiver station allows temporary loss or
reduction of functions or performance. After the test is stopped, the transceiver station shall be
able to resume normal operating state by itself without human intervention.
The surge (impact) immunity of the mobile station shall comply with the requirements of test
level 2 in GB/T 17626.5-2008. During the test, the mobile station allows temporary loss or
reduction of functions or performance. After the test is stopped, the mobile station shall be
able to resume normal operating state by itself without human intervention.
5.2.7 Immunity to conducted disturbances induced by RF field (power port)
The immunity to conducted disturbances induced by RF field of the transceiver station and
mobile station shall comply with the requirements of test level 3 in GB/T 17626.6-2008.
During the test, the transceiver station and mobile station allow temporary loss or reduction of
functions or performance. After the test is stopped, the transceiver station and mobile station
shall be able to resume normal operating state by themselves without human intervention.
5.2.8 Immunity to voltage sags, short interruptions and voltage variations
The transceiver station powered by AC power grid is subjected to 40% voltage sag for 10
cycles, 70% voltage sag for 25 cycles and short interruption for 250 cycles. During the test,
the transceiver station allows temporary loss or reduction of functions or performance. After
the test is stopped, the transceiver station shall be able to resume normal operating state by
itself without human intervention.
5.3 Electrical Safety Requirements
It shall comply with the requirements of Chapter 12 of GA/T 1056-2013.
5.4 Environmental Adaptability Requirements
5.4.1 Test criteria and configuration requirements
In the environmental adaptability test, basic electrical performance (carrier output power,
carrier frequency error and static sensitivity) is used as the performance criterion after the test.
In the environmental adaptability test of the portable station, the basic electrical performance
test uses the portable station’s standard battery.
5.4.2 Mechanical environmental adaptability
5.4.2.1 Impact
After the mobile station, portable station and transceiver station are tested according to the
method specified in 9.1.1, the appearance of the mobile station, portable station and
transceiver station and their internal structural units shall not produce permanent structural
deformation, mechanical damage, electrical failure and loose fastening parts. The internal
circuits, circuit boards, interfaces and other plug-ins of the mobile station, portable station and
transceiver station shall not fall off, become loose or have poor contact. After the test, the
mobile station and portable station shall be able to communicate no...