L24 安装、接线连接件 标准查询与下载

IEC 60445:1988 电器端子和用相应符号标志的接线端子的识别方法(包括字母数字标志识别通则)

Identification of equipment terminals and of terminations of certain designated conductors, including general rules for an alphanumeric system

ITU-T M.500-1988 在受管制的线路部分的日常维护测量.一般的维修原则.维护国际传输系统和电话线路.研究组4

When the measurement mentioned in Q 1.2.1 above gives unacceptably high noise values,or more often,when the reliability of the system makes it desirable,check of the following measurements in accordance with the appropriate CCIR Recommendations for the radio-relay system concerned should be made,the radio-frequency channel being switched to the standby equipment, and the measurement results compared with the results of the reference measurements required by Recommendation M.450,83

Routine Maintenance Measurements to Be Made on Regulated Line Sections - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits

ITU-T R.53-1988 50Bd/120Hz国际音频电报电路(调频和调幅)的畸变容限

The CCITT,considering(a) that the numerous tests made on voice-frequency telegraph (VFT) equipment in service now make it possible to establish limits for the degree of distortion outside which a VFT channel must be regarded as being out of order;(b) that these tests should be made with reversals and with standard text at the modulation rate used for adjustment;(c) that,when equipment is put into service and when it is adjusted,the minimum distortion should be sought and therefore limits for the degree of distortion need not be established in this case.

PERMISSIBLE LIMITS FOR THE DEGREE OF DISTORTION ON AN INTERNATIONAL 50-BAUD/120-HZ VFT CHANNEL (FREQUENCY AND AMPLITUDE MODULATION)

ITU-T M.500 FRENCH-1988 在受管制的线路部分的日常维护测量.一般的维修原则.维护国际传输系统和电话线路.研究组4

Routine maintenance measurements to be made on regulated line sections

ITU-T M.500 SPANISH-1988 在受管制的线路部分的日常维护测量.一般的维修原则.维护国际传输系统和电话线路.研究组4

Routine maintenance measurements to be made on regulated line sections

ITU-T T.562-1988 智能用户电报可处理方式PM.1的终端特性

1.1 The international teletex service requirements to the processable mode of operation PM.1 are defined in Recommendation F.220. 1.2 This Recommendation defines terminal characteristics unique to the processable mode of operation PM. 1.

TERMINAL CHARACTERISTICS FOR TELETEX PROCESSABLE MODE PM.1

ITU-T T.561-1988 混合型操作MM的终端特性

1.1 The international teletex service requirements to the mixed mode of operation MM.1 are defined in Recommendation F.230. 1.2 the service requirements for Group 4 facsimile service related to the mixed mode of operation MM.1 are defined in Recommendation F.161. 1.3 This Recommendation defines terminal characteristics unique to the rnixed mode of operation MM.1.

TERMINAL CHARACTERISTICS FOR MIXED MODE OF OPERATION MM

DIN 41496:1987 电气通信技术.钎焊片，焊环和焊针

This standard is applicable to solder bags, solder lugs and solder pins for use in the electrical engineering.#,,#

Electrical communications engineering; solder bags, solder lugs, solder pins

ITU-R F.613-1986 低于30MHz频段固定业务电离信道探测系统的使用－第3Ac部分－电离层的影响

There are no Recommendations in this Section.

Use of Ionospheric Channel Sounding Systems Operating in the Fixed Service at Frequencies Below About 30 MHz - Section 3Ac - Influence of the Ionosphere

SJ 92-1986 BH型熔断器盒

Fuseboxes,Type BH

SJ 91-1986 DH型信号灯盒

Light indicator boxes,Type DH

NF C93-463/A1:1985 NF C 93-463-1982的补充件1

Supplement 1 to NF C 93-463-1982

DIN 46294:1985 带有６个接线柱的矩形端子板.主要尺寸

Terminal board, square shaped with six terminals; main dimensions

DIN 48085-2:1985 铝导线用耐高强度应力的压缩连接器

Compression connectors, restistant to high tensile stresses, for aluminium-conductors

DIN 46295-1:1985 带６个开口螺栓的矩形接线板.主要尺寸

Terminal board, square shaped with six slit-bolts; main dimensions

SJ 2522-1984 LJZ型集成电路插座

本标准是对LJZ型集成电路插座的技术规定。该产品供安装双列直插式封装的集成电路作老化试验及性能测试用。

Sockets for integrated circuits,Type LJZ

SJ 2520-1984 集成电路插座总技术条件

本标准是对集成电路插座的基本技术规定。该类产品是供无线电电子设备中安装集成电路封装件连接线路及老化试验用。 1.1 本标准是设计、生产、使用集成电路插座以及制订相应产品标准的依据。 插座的结构形式、系列、主要尺寸、使用环境条件、各项电气、机械参数以及特殊技术要求和试验方法等。应在相应的产品标准中规定。 1.2 电额定值 电额定值包括额定电压和额定电流，其数值应由产品标准规定。 1.3 环境试验等级 环境试验等级，如无特殊规定，应按表1～4规定的等级选用。

General specification for sockets for integrated circuits

SJ 2521-1984 CJZ型双列直插式集成电路插座

本标准是对CJZ型双列直插式集成电路插座的技术规定。该产品供电子设备中安装双列直插式封装的集成电路连接线路用。

Sockets for dual in-line integrated circuits,Type CJZ

SJ 2436.3-1984 双U型闭口端套焊片

Double U-form shutting mouth bonding sheet with two sleeves on a shoe

SJ 2436.2-1984 U型斜口端套焊片

U-form slant mouth bonding sheet with two sleeves on a shoe