GB/T 7611-2016Characteristic of the electrical interface at hierarchical bit rate for digital network (English PDF)

National Standard of the People's Republic of China

ICS

33.040.20

Classification

M 19

Replacing

GB/T 7611-2001

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

Contents

• Preface
• 1 Scope
• 2 normative reference document
• 3 Terms and definitions
• 4 acronym
• 5 Electrical interface physical/electrical characteristics
• 5.1 64kbit/s interface
• 5.1.1 Basic requirements
• 5.1.1.1 Interface Type
• 5.1.1.2 basic functional requirements of the interface
• 5.1.1.3 Interface Rate and Tolerance
• 5.1.1.3.1 Co-directional Interface Rate and Tolerance
• 5.1.1.3.2 Centralized Interface Rate and Tolerance
• 5.1.1.3.3 Reverse Interface Rate and Tolerance
• 5.1.1.4 Interface configuration and code conversion
• 5.1.1.4.1 co-directional interface configuration and code conversion
• 5.1.1.4.2 Centralized interface configuration and code conversion
• 5.1.1.4.3 Reverse interface configuration and code conversion
• 5.1.1.5 Overvoltage protection of interface
• 5.1.1.5.1 Over-voltage protection for co-directional interface
• 5.1.1.5.2 Overvoltage protection for centralized interface
• 5.1.1.5.3 Reverse interface overvoltage protection
• 5.1.2 Output requirements
• 5.1.2.1 Output impedance and load impedance
• 5.1.2.1.1 Output impedance and load impedance of the interface
• 5.1.2.1.2 Reverse Interface Output Impedance and Load Impedance
• 5.1.2.2 Output waveform and parameter
• 5.1.2.2.1 Output waveform and parameter 9 for synchronous interface
• 5.1.2.2.2 Centralized interface output waveform and parameter
• 5.1.2.2.3 Reverse interface output waveform and parameter
• 5.1.3 Input Requirements
• 5.1.3.1 Centralized input port characteristics
• 5.1.3.2 Input impedance of the same type of interface
• 5.1.3.3 Reverse Interface Input Impedance
• 5.1.3.4 Receiver sensitivity for the same type of interface
• 5.1.3.5 Reverse interface reception sensitivity
• 5.1.3.6 Anti-jamming capability of the same type of interface input port
• 5.1.3.7 Reverse interface input port Anti-jamming capability
• 5.1.4 Outer conductor and shield ground
• 5.2 2048 kbit/s interface (E12)
• 5.2.1 Basic requirements
• 5.2.1.1 Rate and Tolerance
• 5.2.1.2 Interface Code
• 5.2.1.3 Overvoltage protection
• 5.2.2 Output requirements
• 5.2.2.1 Output port load impedance and output impedance
• 5.2.2.2 Output Output Signal Waveform and Related Parameters
• 5.2.3 Input Requirements
• 5.2.3.1 Input impedance characteristics
• 5.2.3.2 Input Sensitivity
• 5.2.3.3 Input port anti-interference ability
• 5.2.4 Outer conductor and shield ground
• 5.3 8448kbit/s interface (E22)
• 5.3.1 Basic requirements
• 5.3.1.1 Rate and Tolerance
• 5.3.1.2 Interface Code
• 5.3.1.3 Overvoltage protection
• 5.3.2 Output requirements
• 5.3.2.1 Output port impedance and output impedance
• 5.3.2.2 Output output signal waveform and related parameters
• 5.3.3 Input Requirements
• 5.3.3.1 Input port impedance
• 5.3.3.2 Input Sensitivity of Input Port
• 5.3.3.3 Input port anti-interference ability
• 5.3.4 Outer conductor and shield ground
• 5.4 34368 kbit/s interface (E31)
• 5.4.1 Basic requirements
• 5.4.1.1 Rate and Tolerance
• 5.4.1.2 Interface code
• 5.4.1.3 Overvoltage protection
• 5.4.2 Output requirements
• 5.4.2.1 Output port impedance and output impedance
• 5.4.2.2 Output signal waveform and related parameters
• 5.4.3 Input Requirements
• 5.4.3.1 Input port impedance
• 5.4.3.2 Input Receiving Sensitivity
• 5.4.3.3 Input port anti-interference ability
• 5.4.4 Outer conductor and shield ground
• 5.5 44736kbit/s interface
• 5.5.1 Basic requirements
• 5.5.1.1 Rate and Tolerance
• 5.5.1.2 Interface Code
• 5.5.1.3 Overvoltage protection
• 5.5.2 Physical characteristics requirements
• 5.6 139264 kbit/s interface (E4)
• 5.6.1 Basic requirements
• 5.6.1.1 Rate and Tolerance
• 5.6.1.2 Interface Code
• 5.6.1.3 Overvoltage protection