GB 2356-1980 电话参考当量标准系统
作者:标准资料网 时间:2024-05-11 12:15:17 浏览:9798
来源:标准资料网
基本信息
| 标准名称： | 电话参考当量标准系统 |
| 英文名称： | Telephone parameters-Equivalence series standard |
| 中标分类： |
通信、广播 >>
通信网 >>
各种通信业务服务 |
| 替代情况： | 作废; |
| 发布部门： | 国家标准总局 |
| 发布日期： | 1980-12-31 |
| 实施日期： | 1981-08-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 起草单位： | 邮电部传输所 |
| 出版日期： | 1900-01-01 |
| 页数： | 5页 |
适用范围
本标准系统适用于测量电话传输系统中的发送参考当量、接收参考当量和传输系统的全程参考当量以及话机的侧音参考当量。
前言
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目录
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引用标准
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所属分类： 通信 广播 通信网 各种通信业务服务
Product Code:SAE J18
Title:Sponge and Expanded Cellular Rubber Products
Issuing Committee:Committee On Automotive Rubber Specs
Scope: The SAE Committee on Automotive Rubber Specifications has concluded, that in light of the fact that SAE J18 is a mirror image of ASTM D 1056 (Vol. 8.01), SAE J18 will be eliminated in the year 2005.This SAE Recommended Practice covers flexible cellular rubber products known as sponge rubber and expanded rubber, but does not apply to latex foam rubber or ebonite cellular rubber. The base material for an open/closed cellular product may be made of synthetic, natural, reclaimed rubber, or a mixture, and may contain other polymers or chemicals, or both, which may be modified by organic or inorganic additives. These elastomeric materials have properties similar to those of vulcanized rubber, namely (a) the ability to be converted from a thermoplastic to a thermosetting state by crosslinking (vulcanization) and or (b) substantial recovery of their original shapes when strained or elongated, or both.Extruded or molded shapes of sizes too small for cutting standard test specimens are difficult to classify or test by these methods and will usually require special testing procedures.In case of conflict between the provisions of this general specification and those of detailed specifications or test methods for a particular product, the latter shall take precedence. Reference to the test methods in this document should specifically state the particular test or tests desired.The values stated in SI units are to be regarded as the standard. English units are included for reference only.The following safety hazards caveat pertains only to the test methods portions of this document: This document does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.NOTE -- ASTM D 1056-98 and ISO 6916-1 are similar to this document.【英文标准名称】:Coaxialcommunicationcables-Part8-8:Detailspecificationfor75-141typesemi-flexiblecableswithsolidpolytetrafluoroethylene(PTFE)insulation
【原文标准名称】:同轴通信电缆.第8-8部分:带固体聚四氟乙烯(PTFE)绝缘层的75-141型半柔性电缆用详细规格
【标准号】:IEC61196-8-8-2012
【标准状态】:现行
【国别】:国际
【发布日期】:2012-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC46A
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆;同轴电缆;尺寸选定;电气工程;高频;绝缘件;测量;测量技术;聚四氟乙烯;性能;聚四氟乙烯(PTFE);射频电缆;额定值;规范;试验
【英文主题词】:Cables;Coaxialcables;Dimensioning;Electricalengineering;Highfrequencies;Insulations;Measurement;Measuringtechniques;Polytetrafluoroethylene;Properties;PTFE;Radiofrequencycables;Ratings;Specification;Testing
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:22P;A4
【正文语种】:英语
