title>GB/T 11318.8-1996 Cable distribution system equipment and components for television and sound signals Part 8: General specification for trunk amplifiers - GB/T 11318.8-1996 - Chinese standardNet - bzxz.net
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GB/T 11318.8-1996 Cable distribution system equipment and components for television and sound signals Part 8: General specification for trunk amplifiers
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Standard ID:
GB/T 11318.8-1996
Standard Name: Cable distribution system equipment and components for television and sound signals Part 8: General specification for trunk amplifiers
Standard ICS number:Telecommunications, audio and video technology>>Parts and accessories for telecommunications equipment>>33.120.20 Wires and symmetrical cables
Standard Classification Number:Communications, Broadcasting>>Broadcasting, Television Equipment>>M72 Imaging, Electroacoustic Equipment
This standard specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of trunk amplifiers in cable distribution systems for 5MHZ~1750MHz television and sound signals. This standard applies to trunk amplifiers in cable distribution systems for 5MHZ~1750MHz television and sound signals. GB/T 11318.8-1996 Cable distribution system equipment and components for television and sound signals Part 8: General specification for trunk amplifiers GB/T11318.8-1996 Standard download decompression password: www.bzxz.net
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1 Scope 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 8: Generic specifications for trunk amplifiers Equipments and components used in cabled distribution systems primarily intended for television and sound signalsPart 8:Generic specifications for trunk amplifiersGB/T11318.8—1996 Replaces GH/T14948.41994 This standard specifies the product classification, requirements, test methods, inspection regulations and marking, packaging, transportation and storage of trunk amplifiers in cabled distribution systems for television and sound signals of 5MHz to 1750MHz. This standard applies to trunk amplifiers 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 by reference in this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision, and 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/T11318.14--1996 Cable distribution system equipment and components for television and sound signals Part 14: General specifications for lightning arresters 3 Definitions This standard adopts the following definitions, and other definitions should comply with the relevant provisions in GB/T11318.1. 3.1 Nominal input level rated input level The nominal input level refers to the input level at the center point or reference point within the input level range that meets the performance parameters of the trunk amplifier, that is, the level measured from the input monitoring port plus the sum of the branch losses of the monitoring circuit. It is the actual input level of the first-stage amplifier after deducting the insertion loss from the input port of the trunk amplifier to the middle of the first-stage amplifier. 3.2 Nominal output level rated output level The nominal output level refers to the output level of the trunk amplifier under nominal gain conditions. 3.3 Flat output trunk amplifiers trunk amplifiers with flat output level Flat output trunk amplifiers are such amplifiers: during the signal transmission process, equal amplitude levels of various frequency signals can be obtained at each trunk amplifier output end. 3.4 Full slope trunk amplifiers trunk amplifiers with full sloped output level Full slope trunk amplifiers are such amplifiers: during the signal transmission process, equal amplitude levels of various frequency signals can be obtained at each ten-line amplifier input port, and the output level of the trunk amplifier increases with the increase of frequency. Approved by the State Administration of Technical Supervision on September 9, 1996 366 Implementation on May 1, 1997 GB/T11318.8--1996 3.5 Trunk amplifiers with half sloped output level A trunk amplifier with half sloped output level is a type of amplifier that, during signal transmission, can obtain equal amplitude levels of each frequency signal at the midpoint of each cable section, while the levels of each frequency signal at the input and output ends of the trunk amplifier are not equal. 3.6 Gain adjustment range gain adjustment range refers to the decibel difference in gain values at two extreme positions when the gain is adjusted manually. 3.7 Equalized value Equalized value refers to the decibel difference in attenuation between the low-frequency reference point and the high-frequency reference point of the equalizer. 3.8 Equivalent equalized value equivalent equalized value The equivalent equalized value is directly expressed by the cable attenuation at the high-frequency reference point. This standard adopts the equivalent equalization value. After the frequency band of the trunk amplifier is determined, the equivalent equalization value = equalization value/[1-(years)\)fh/ Wherein: f——is the low frequency reference point; fh—is the high frequency reference point. 3.9 Mutual complement between equalizer and cable The meaning of complementation in this standard refers to the frequency characteristics of the flat output response that are regained after a sweep frequency generator with a flat output response is connected in series with a cable and an equalizer. The equalizer and the cable are said to be complementary. 3.10 Tilt Tilt refers to the difference between the output level of the amplifier's high frequency reference point and the output level of the low frequency reference point. 3.11 Slope The slope is directly expressed by the cable attenuation corresponding to the high frequency reference point. 3.12 Slope adjustable range slope adjustable range The slope adjustable range refers to the decibel difference between the maximum slope and the minimum slope when adjusting the slope. 3.13 Stability of gain When the trunk amplifier is set to the nominal gain at 20°C, when the temperature changes within the range of -10°C to +40°C, the gain deviation is the gain stability. minimum full gain 3.14 Minimum full gain When the attenuator and equalizer at the input of the trunk amplifier are short-circuited and set to the manual maximum gain, the gain of the trunk amplifier is the minimum full gain. 4 Product classification 4.1 Class I trunk amplifier (ALC) Trunk amplifier. 4.2 Class I trunk amplifier (AGC) Trunk amplifier Class IA: AGC trunk amplifier with automatic slope compensation. Class IB: AGC trunk amplifier without automatic slope compensation. 4.3 Class trunk amplifier (trunk amplifier with manual gain and slope). Class IIIA: T-line amplifier used with a Class I trunk amplifier. Class IIB: Trunk amplifier used alone or with a Class I sub-line amplifier. 5 Requirements 5.1 General requirements The general requirements for trunk amplifiers shall comply with the provisions of 4.1.1 of GB/T11318.1-1996. 5.2 Performance parameter requirements GB/T11318.8-1996 The performance parameter requirements for trunk amplifiers are shown in Tables 1 to 15. Table 1 Class-A trunk amplifier (300MHz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC characteristics ASC characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross-modulation ratio Reflection loss Signal-to-noise ratio Surge voltage 10 /700μs Nominal supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Performance parameters Power doubler 47~300 ±3/±0.3 ±2/±0.3 30, 42, 60 Table 2 Class I trunk amplifier (450MHz) Performance parameters Power doubler 47~450 Measurement method GB/T 11318. 1 - 1996 4.2.2.2.4 GB/T11318.11996 4. 2. 2. 2. 8 GB/T11318.11996 4.2.2.2.9 GB/T 11318. 1- 1996 in 4.2.2.2.5 GB/T 11318.1 1996 in 4.2.2.2.11 GB/T11318.141996 Measurement method Nominal output level Pilot output level AGC characteristics ASC characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross-modulation ratio Reflection loss Signal-to-noise ratio Withstand impulse voltage 10/700μts Nominal power supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC characteristics ASC characteristics Noise figure GB/T 11318.8-1996 Table 2 (end) Performance parameters Power doubler ±3/±0.3 ±2/±0.3 30, 42.60 Table 31 Class trunk amplifier (550MHz) Performance parameters Power doubler 47~550 ≥34 1≥26 ≥30/≥34 ±3/±0.3 ±2/±0.3 Measurement method GB/T 11318. 1-1996 4. 2. 2. 2. 4 GB/T 11318.1-1996 4.2.2.2.8 GB/T11318.1-1996 4.2.2.2.9 GB/T 11318.1-1996 4.2.2.2.5 GB/T 11318.1--1996 4.2.2.2.11 GB/T11318.14—1996 Measurement method GB/T 11318.1--1996 4.2.2.2.4 Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross modulation ratio Reflection loss Signal to noise ratio Impulse voltage 10/700μs Nominal power supply Voltage (50 Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC Slope Compensation characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross-modulation ratio GB/T 11318.8-1996 Table 3 (end) Performance parameters Power doubler 30, 42, 60 Table 4 Class ⅡA trunk amplifier (300MHz) Performance parameters Power doubler 47~300 ±3/±0.5 Surveying method GB/T11318.11996 4.2.2.2.8 GJ3/T11318.1 1996 4.2.2.2.9 GB3/T 11318. 1 -- 1996 in 4.2.2.2.5 GB/T 11318- 1 - 1996 + 4.2.2.2.11 GB/T11318.141996 in Measurement method GB/T 11318.1 --1996中 4.2.2.2.4 GB/T 11318. 1 - 1996 中 4.2.2.2.8 GB/T 11318. 1 - 1996 Medium 4.2.2.2.9 Reflection loss Signal to AC noise ratio Impact withstand voltage 10/700 μs Nominal supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC and slope Compensation characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross-modulation ratio Reflection loss Signal to noise ratio Impulse voltage 10/700μs GB/T 11318.8-1996 Table 4 (end) Performance parameters Power doubler 30, 42.60 Class IA trunk amplifier (450MHz) Performance parameters Power doubler 47~450 ±3/±0.5 Measurement method |GB/T11318.1--1996 4.2.2.2.5 GB/T11318.1--1996 4.2.2.2.11 GB/T 11318.14-1996 Measurement method GB/T11318.1--1996 4.2.2.2.4 GB/T11318.11996 4.2.2.2.8 GB/T 11318. 1 1996 4.2.2.2.9 GB/T11318.1—1996 4.2.2.2.5 GB/T 11318. 1--1996 4.2.2.2.11 GB/T11318.14--1996 Nominal power supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC and slope Compensation characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross-talk modulation ratio Reflection loss Signal to noise ratio Impact withstand voltage 10/700gs Nominal power supply Voltage (50 Hz) GB/T 11318.8—1996 Table 5 (end) Performance parameters Power doubler 30, 42, 60 Table 6 Class IA trunk amplifier (550MH2) Performance parameters ≥30≥34 Power doubler 47~550 ±3/±0.5 30, 42, 60 Measurement method Measurement method GB/T11318.11996 4.2.2.2.4 GB/T 11318.1 1996 4.2.2.2.8 GB/T 11318. --- 1996 4.2.2.2.9 GB/T 11318.1- 1996 4.2.2.2.5 GB/T11318.1—1996 4.2.2.2.11 GB/T11318.14—1996 Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Cross-talk modulation ratio Reflection loss Signal to noise ratio Impact withstand voltage 10/7 00μs Nominal power supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level GB/T11318.8—1996 Class ⅡB trunk amplifier (300MHz) Performance parameters Power doubler 47~300 ±3/±0.3 Table 8Class IB trunk amplifier (450MHz) Performance parameters Power doubler 47~450 Measurement method GB/T 11318. 1 -1996 Application 4. 2. 2. 2. 4 GB/T11318.1-1996 4.2.2.2.8 GB/T 11318.1—1996 4.2.2.2.9 GB/T11318.1--1996 4.2.2.2.5 GB/T11318.1—1996 4.2.2.2.11 GB/T11318.14-1996 Measurement method AGC characteristics Noise figure Carrier combination Third beat ratio Carrier combination Second beat ratio Carrier combination Interference modulation ratio||tt| |Reflection loss Signal-to-hum ratio Surge voltage 10/700μs Nominal power supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain In-band flatness Nominal input level Nominal output level Pilot output level AGC characteristics Noise figure Carrier combination Third-beat ratio Carrier combination Second-beat ratio GB/T 11318. 8--1996 Table 8 (end) Power doubler ±3/±0.3 30, 42, 60 Class II B trunk amplifier (550MHz) Performance parameters Power doubler 47~550 Measurement method GB/T 11318. 1-1996 4.2.2.2.4 GB/T 11318.1 1996 4.2.2.2.8 GB/T11318.11996 4.2.2.2.9 GB/T 11318.1 1996 4.2.2.2.5 GB/T 11318.1 1996 4.2.2.2.11 GB/T11318.141996 Basis measurement method GR/T11318.11996 4.2.2.2.4 GB/T11318.11996 4.2.2.2.8 [GB/T 11318.11996 4.2.2.2.9 Carrier combination Cross-talk modulation ratio Reflection loss Signal to noise ratio Impact withstand voltage 10/700μs Nominal power supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain Gain adjustment range| |tt||In-band flatnessbzxZ.net Slope adjustment range Gain stability Noise figure Nominal output level Carrier combination Third-order beat ratio Carrier combination Second-order beat ratio Carrier combination Cross-talk modulation ratio Reflection loss Signal-to-noise ratio Impact withstand voltage 10/700 μs Nominal supply Voltage (50Hz) CB/T 11318.8—1996 Table 9 (end) Power doubler 30.42, 60 Sub-class A trunk amplifier (300MHz) Performance parameters Power doubler 47~300 0~~10 Measurement method GB/T11318.1 1996 4.2.2.2.5 [GB/T 11318. 1 --1996 4.2.2.2. 11 | | tt | 1- 1996 in 4.2.2.2. 4 GB/T 11318. 1 --1996 in 4.2.2.2.8 GB/T 11318. --1996 in 4.2.2.2.9 GB/T 11318. 1-- 1996 Medium 4.2.2.2.5 GB/T 11318.1 1996 Medium 4.2. 2. 2.11 CB/T 11318. 14 --1996 Medium Frequency range Minimum full gain Nominal gain Gain adjustment range In-band flatness Slope adjustment range Gain stability Noise figure Nominal output level Carrier combination Third-order beat ratio Carrier combination Second-order beat ratio Carrier combination Crosstalk Modulation ratio Reflection loss Signal-to-noise ratio Impact withstand voltage 10/700μs Nominal power supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain Gain adjustment range In-band flatness Slope adjustment range Gain stability GB/T 11318.8—1996 Class ⅢA trunk amplifier (450MHz) Performance parameters Power doubler 47~450 0~220~260~300~220~260~300~220~260~30±0.5 30、42.60 Table 12 Class ⅡA trunk amplifier (550MHz) performance parameters Power doubler 47~550 Measurement method GB/T11318.11996Appendix 4.2.2.2.4 GB/T 11318.1 1996 4.2.2.2.8 GB/T 11318. 1 1996 4.2.2.2.9 GB/T 11318.1 1996中 4.2.2.2.5 GB/T 11318. 1--1996 中 4.2.2.2.11 GB/T 11318.141996 Measurement method 0~220~260~300~22|0~260~300~220~26|030±0.5 Noise figure Nominal output level Carrier combination Three beat ratios Carrier combination Secondary beat ratio Carrier combination Cross-talk modulation ratio Reflection loss Signal to AC noise ratio Impact voltage 10/700μs Nominal supply Voltage (50Hz) Frequency range Minimum full gain Nominal gain Gain adjustment range In-band flatness Slope adjustment range Gain stability Noise figure Nominal output level Carrier combination Third-beat ratio Carrier combination Second-beat ratio GB/T 11318.8—1996 Table 12 (end) Performance parameters Power doubler 30, 42, 60 Class II B trunk amplifier (300MHz) Performance parameters Power doubler 47~300 0~220~260~300~22|0~260~300~22/0~260~30±0.5 Measurement method GB/T 11318.1-1996 + 4.2.2.2.4 GB/T 11318.1-1996 4.2.2.2.8 GB/T 11318. I ~-1996 in 4.2.2.2.9 GB/T 11318. 1--1996 in 4.2.2.2.5 GB/T 11318. 1--1996 in 4.2.2.2.11 GB/T11318.14—1996 in Measurement method GB/T 11318. 1— 1996 in 4.2.2.2.4 GB/T 11318. 1—1996 Medium 4.2.2.2.8 GB/T 11318.1 1996 1.2.2.2.9 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.