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 GB/T 9602-1988  
Measuring methods of electrical properties of continuous wave magnetrons
连续波磁控管电性能测试方法
 GB/T 9363-1988  
Information processing--9-Track， 12.7mm (0.5in) wide magnetictape for information interchange--Format and recording，using group coding at 246 cpmm(6250 cpi)
信息处理 信息交换用9磁道12.7mm(0.5in)磁带成组编码方式246 cpmm (6250 cpi) 的格式及记录
 GB/T 7622-1987  
600/1200 bauds modem standardized for use in the general switched telephone network
在电话自动交换网上使用的标准化600/1200波特调制解调器
 GB/T 7623-1987  
Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network， including procedures for bling of echo control devices for both manually and automatically established calls
在电话自动交换网上的自动应答设备和(或)并行自动呼叫设备， 包括人工和自动建立呼叫时使回波控制装置停止工作的规程
 GB/T 7620-1987  
300 bits per second duplex modem standardized for use in the general switched telephone network
在电话自动交换网上使用的标准化300比特/秒全双工调制解调器
 GB/T 7625-1987  
2400/1200 bits per second modem standardized for use in the general switched telephone network
在电话自动交换网上使用的标准化 2400/1200比特/秒调制解调器
 GB/T 7621-1987  
1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits
在电话自动交换网和点对点二线租用电话型电路上使用的标准化的1200比特/秒双工调制解调器
 GB/T 7419-1987  
Information processing--Implementation of the 7-bit coded character set and its 7-bit and 8-bit extensions on 3.81mm magnetic tape cassette for data interchange
信息处理 数据交换用七位编码字符集及其七位与八位扩充在3.81mm盒式磁带上的实现方法
 GB/T 7399-1987  
Helical-scan video tape cassette system using 12.65 mm magnetic tape on type VHS
VHS 型12.65 mm螺旋扫描盒式磁带录像系统
 GB/T 7339-1987  
Fixed resistors for use in electronic equipment--Part 6:Blank detail specification--Fixed resistor networks with individually measurable resistors， all of equal value and equal dissipation--Assessment level E
电子设备用固定电阻器 第六部分:空白详细规范 阻值和功耗相同， 各电阻器可单独测量的固定电阻网络 评定水平 E (可供认证用)
 GB/T 7340-1987  
Fixed resistors for use in electronic equipment--Part 6:Blank detail specification--Fixed resistor networks with individually measurable resistor of either different resistance values or different rated dissipations--Assessment level E
电子设备用固定电阻器 第六部分:空白详细规范 阻值和功耗不同， 各电阻器可单独测量的固定电阻网络 评定水平 E (可供认证用)
 GB 6280-1986  
Capacity series and frequency channels arrangement in 25 to 1000 MHz land mobile telecommunication network
25～1000 MHz陆地移动通信网的容量系列及频道配置
 GB/T 6282-1986  
Interface parameters of the 25 to 1000MHz land mobile telecommunication network connecting to public telecommunication network through subscriber lines
25～1000 MHz陆地移动通信网通过用户线接入公用通信网的接口参数
 GB/T 6550-1986  
Information processing -- 9-Track，127mm wide magnetic tape for information interchange recorded at 63rpmm， phase encoded
信息处理交换用9磁道12.7毫米宽63行/毫米调相制记录磁带
 GB/T 5444-1985  
The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network
电话自动交换网用户信号技术指标测试方法
 GB/T 5443-1985  
The test methods for the technical specifications of ringing and tone for automatic telephone switchingnetwork
电话自动交换网铃流和信号音技术指标测试方法
 GB/T 5442-1985  
The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network
电话自动交换网带内单频脉冲线路信号技术指标测试方法
 GB/T 5440-1985  
Stereophonic broadcast magnetic recorder
广播用立体声录音机
 GB/T 3971.3-1983  
The test methods for the technical specifications of multi-frequency register signalling for telephone auto-matic switching network
电话自动交换网多频记发器信号技术指标测试方法
 GB 3971.2-1983  
Interoffice junction digital line signalling system for telephone automatic switching network
电话自动交换网局间中继数字型线路信号方式
 GB/T 3848-1983  
Hardmetals--Determination of (the magnetization) coercivity
硬质合金矫顽 (磁) 力测定方法
 GB/T 3660-1983  
Unified weighting network for measuring video continuous random noise
测量视频连续随机杂波用的统一加权网络
 GB 3380-1982  
Ringing and tone for telephone automatic switching network
电话自动交换网铃流和信号音
 GB 3378-1982  
Subscriber line signalling system for telephone automatic switching network
电话自动交换网用户信号方式
 GB 3377-1982  
Multifrequency register signalling system for telephone automatic switching network
电话自动交换网多频记发器信号方式
 GB 3376-1982  
Inband pulsing single frequencyline signalling system for telephone automatic switching network
电话自动交换网带内单频脉冲线路信号方式
 GB/T 3290-1982  
Dimensions and characteristics of magnetic tape reel for information interchange
信息交换用磁带盘的尺寸和性能
 GB/T 2789-1981  
Technical requirements for network interface for the analogue microwave relay communication systems
模拟微波接力通信系统网路接口基本技术要求
 GB/T 2020-1980  
Recording magnetic tape with 9 magnetic tracks， 12.7mm width and 32 lines/mm for informationprocessing exchange
信息处理交换用9磁道12.7毫米宽32行/毫米记录磁带
 GB 2017-1980  
Covering technique of the medium-wave broadcastingnetwork
中波广播网覆盖技术
 GB/T 1989-1980  
Methods for indication of the 7-bit encoding character set for information processing switching on 12.7 mm magnetic tape
信息处理交换用七位编码字符集在9磁道12.7 毫米磁带上的表示方法
 GB 2017-1980  
Covering technique of the medium-wave broadcastingnetwork
中波广播网覆盖技术

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