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GB/T 4312.3-1987Technical parameters and measuring methods for FM broadcasting transmitters of dual programmes (English PDF)

调频广播发射机技术参数和测量方法双节目

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 13, 1987

Implementation date

November 1, 1987

Scope

GB/T 4312.3-1987 is the English-translated version of 调频广播发射机技术参数和测量方法双节目.

GB/T 4312.3-1987 is the Chinese standard "Technical parameters and measuring methods for FM broadcasting transmitters of dual programmes". This standard applies to dual program FM radio transmitter, which include the main technical parameters and methods of measurement end to the audio input of the transmitter from the transmitter frequency output. Issued on 3/13/1987, in force from 11/1/1987.

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Document preview — GB/T 4312.3-1987

National Standard of the People's Republic of China

ICS: 33.060.20
Classification: M74

[Preview only]
1 Scope
1.2 Normative References
1.3 Picture types
2.1 Definitions
2.2 Types of Receivers
2.3 Peripheral Connectors
2.4 Measurements
2.5 Equipment classification
2.6 Receiver and transmitter
2.7 Power controls and supply network impedances
2.8 Voltage change and flicker
2.9 Plastic pipes and fittings
3 1 test device
3.1 General Conditions
3.2 Test Signals
3.3 Radiofrequency (r.f.) Television Signal
3.4 Radiofrequency Input Signals
3.5 Measuring System and Test Instruments
3.6 Standard Measuring Conditions
4 Sample 1 and Sample Preparation
4.1 Electrical and Mechanical Performance
4.2 Power Consumption
4.3 REQUEST/RESPOND ser vice
5 Test Procedure 2
5.1 Tuning Characteristics
5.2 Sensitivity
5.3 Selectivity and Response to Undesired Signals
5.4 Cement mortar
6 2 eligibility criteria
6.1 Characteristics of the Luminance Channel
6.2 Characteristics of Chrominance Channel
6.3 Balanced transmission procedures
6.4 Manhole (handhole) overlay and tunnel trench cover slab
6.5 Hole rings and covers
7 Results
7.1 General Properties of the Picture
7.2 Synchronizing Quality
7.3 Picture Size Stability Versus Changes of CRT Beam Current
7.4 Characteristics Inherent in Projection Type Displays
7.5 Characteristics Inherent in DCD Displays
7.6 Characteristics Inherent in Widescreen Displays
8 Characteristics Inherent in the Receivers Using Double-rate Scan Display
8.1 General
8.2 Preliminary acceptance
8.3 Final acceptance
9 Disturbance on the Picture Due to Signals Inserted into the Field Blanking Interval
9.1 Introduction
9.2 Method of Measurement
9.3 Presentation of Results

1 Foreword

GB/T 4312.3-1987 was issued by State Administration for Market Regulation; Standardization Administration of the PRC on 13 March 1987 and has been in force since 1 November 1987.

It is one of 3 parts of the GB/T 4312 series.

The GB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

2 Scope Preview

This standard applies to dual program FM radio transmitter, which include the main technical parameters and methods of measurement end to the audio input of the transmitter from the transmitter frequency output.

GB/T 4312.3-1987 falls under ICS 33.060.20, in the field of telecommunications.

This catalogue holds 1,124 other GB/T standards in that field.

In this catalogue, GB/T standards carry edition years from 1963 to 2026.

3 About this standard

Sector: National Standard (Recommended)

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

English translation: about 8 pages (approximate)

Chinese original: about 8,858 characters

4 Related standards

Other parts of this standard:

GB/T 4312.1-1984 — Technical parameters and measuring methods for FM broadcasting transmitters. Monophonic and stereophonic

GB/T 4312.2-1984 — Technical parameters and measuring methods for FM stereophonic broadcasting transmitters with supplementary channel

Standards on related subjects:

GB/T 19954.2-2016 — Electromagnetic compatibility - Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use - Part 2: Immunity

GB/T 19954.1-2016 — Electromagnetic compatibility - Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use - Part 1: Emissions

GB/T 26686-2011 — General specification for digital terrestrial television receiver

GB/T 9389.1-2026 — Transmission of audio and/or video and related signals using infra-red radiation - Part 1: General

GB/T 9374-2012 — Basic parameters for sound broadcasting receivers

GB/T 2846-2011 — Methods of measurement on radio receivers for AM broadcast transmissions

5 Classification and status

International classification (ICS): 33.060.20

Chinese Standard Classification (CCS): M 74

Prefix GB/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 8 pages — is available in the English PDF.

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