This standard specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of distributors and user taps (hereinafter referred to as components) in cable distribution systems for television and sound signals from 5MHZ to 1750MHz. This standard applies to distributor equipment and components and user taps in cable distribution systems for television and sound signals from 5MHZ to 1750MHz. GB/T 11318.10-1996 Cable distribution system equipment and components for television and sound signals Part 10: General specification for distributors and user taps GB/T11318.10-1996 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Equipment and components used in cabled distribution systems primarily intended for television and sound signals
Part 10: Generic specifications for splitter and subscriber's tap.
1 Scope
GB/T 11318. 10—1996
This standard specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of splitters and subscriber's taps (hereinafter referred to as components) in cabled distribution systems for television and sound signals of 5MHz to 1750MHz. This standard applies to splitters and subscriber's taps in cabled distribution systems for television and sound signals of 5MHz to 1750MHz. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T11318.1-1996 Cable distribution system equipment and components for television and sound signals Part 1: General specifications GB/T11318.9-1996 Cable distribution system equipment and components for television and sound signals Part 9: General specifications for power supply equipment
3 Product classification
3.1 Distributors are divided into two-distributors, three-distributors, four-distributors and six-distributors according to the number of output ports. 3.2 Branches are divided into one-branchers, two-branchers, three-branchers and four-branchers according to the number of output ports. 3.3 Components are divided into general type, current passing type and waterproof type according to different use conditions. 4 Requirements
4.1 General requirements
The general requirements of components shall comply with the provisions of 4.1.1 in GB/T11318.1-1996. 4.2 Performance parameters
The performance parameter requirements of components are shown in Tables 1 to 6. Approved by the State Administration of Technical Supervision on September 9, 1996 390
Implemented on May 1, 1997
Frequency range
Distribution loss
Mutual isolation
Reflection loss
Distribution loss
Mutual isolation
Reflection loss
GB/T11318.10—-1996
Universal distributor
Two distributors
5 MHz~30 MHz
47 MHz~550 MHz
5 MHz~~30 MHz
47 MHz-~550 MHz
5 MHz~30 MHz
47 MHz~550 MHz
Table 2 Distributor
Two-distributor
Performance parameters
Three-distributor
Four-distributor
47~800
Performance parameters
Three-distributor
Current through type and waterproof type distributor
Distribution consumption
Mutual isolation
Reflection loss
Three-distributor
5 MHz~30 MHz
47MHz550MHz
5 MHz -~ 30 MHz
47 MHz~550 MHz
5 MHz～30 MHz
47 MHz～550MHz
Signal to AC noise ratio, dB
Port current carrying capacity, A
Through voltage, V
Note: Port current carrying capacity greater than 2A is suitable for outdoor waterproof distributors. N4.5
Table 4 Universal user splitter
Frequency range, MHz
Branch loss
Nominal value
Allowable deviation
Branch
Four splitters
Performance parameters
Three splitters
2, 4.6, 10
60 (50Hz)
Performance parameters
Two splitters
47~800
Six splitters
Six splitters
Four splitters
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Insertion loss, dB
Reverse isolation, dB
Mutual isolation, dB
Reflection loss, dB
Branch loss
Insertion loss
Reverse isolation
Mutual isolation
Reflection loss
Branch loss
Insertion loss
Reverse isolation
Mutual isolation
Reflection loss
Nominal value
Allowable deviation
GB/T 11318.10—1996
Table 4 (end)
·Splitter
Performance parameters
Two splitters
Four splitters
321.54.5321.51.4.3
Low 2—eight 2
≥13217|≥21|≥25[≥13|≥17|≥21 ≥25|≥29|≥17|≥21|≥25|≥29≥18
Table 5 User splitters
Performance parameters
One splitter
5 MHz~30 MHz
47MHz~550 MHz
5MHz~550MHz
5 MHz~30 MHz
47 MHz~550 MHz
5MHz~~30MHz
47 MHz~550 MHz
1.7≤1.2
≥221wwW.bzxz.Net
Two-way splitter
Four-way splitter
[≥22|≥26
≥30≥18
≥22≥30
Table 6 Current-passing type and waterproof user splitter Item
In-band flatness, dB
Signal-to-noise ratio, dB
Port current carrying capacity, A
Through voltage, V
Nominal value
Allowable deviation
5 MHz ~~ 550 MHz
5 MHz~～550 MHz
5 MHz~30 MHz
47 MHz~550 MHz
5 MHz~30 MHz
47 MHz~550 MHz
One splitter
Note: Port current carrying capacity greater than 2A is suitable for outdoor waterproof user splitters. 392
Performance parameters
2, 4, 6, 10
60(50 Hz)
Two splitters
4.3 Environmental adaptability
GB/T 11318.10—1996
The environmental adaptability requirements of components shall comply with the relevant provisions of 4.3 of GB/T11318.1-1996. The test items after high temperature, constant humidity and heat, low temperature, sealing, sweep frequency vibration and collision tests are distribution loss or branch loss. After the alternating salt spray and free drop tests, the performance tests shall be carried out according to the items specified in Tables 1 to 6. The test results shall comply with the relevant provisions in Tables 1 to 6. 4.4 Reliability
The lower limit value of the reliability index mean time between failures (MTBF) of the component shall not be less than 100000h. The failure criterion is the distribution loss or branch loss, and the change range compared with that before the test exceeds ±1.5dB respectively. 4.5 Electromagnetic compatibility
The electromagnetic compatibility requirements of the components shall comply with the relevant provisions of 4.6 of GB/T11318.1-1996. 5 Test methods
5.1 General requirements
The test methods for general requirements of components shall be carried out in accordance with the provisions of 4.1.2 of GB/T11318.1-1996. 5.2 Performance parameters
The performance parameter measurement methods of the components shall be carried out in accordance with the relevant provisions of 4.2.2 of GB/T11318.1-1996. The port current carrying capacity measurement method shall be carried out in accordance with the provisions of 6.2.3 of GB/T11318.9. 5.3 Environmental adaptability
The environmental adaptability test method of the components shall be carried out in accordance with the provisions of 4.3 of GB/T11318.1-1996. The test temperature group is Group I. 5.4 Reliability
The reliability test method of the components shall be carried out in accordance with the provisions of 4.4 of GB/T11318.1-1996. The test plan is Plan I. 5.5 Electromagnetic compatibility
The electromagnetic compatibility test method of the components shall be carried out in accordance with the relevant provisions of 4.6 of GB/T11318.1-1996. 6 Inspection rules
The inspection rules of the components shall comply with the provisions of Chapter 5 of GB/T11318.1-1996. The main electrical performance parameter detection items during the delivery inspection are distribution loss or branch loss.
7 Marking, packaging, transportation and storage
The marking, packaging, transportation and storage of components shall comply with the relevant provisions of Chapter 6 of GB/T11318.1-1996. 393
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