The applying of adaptive noise canceling technology on carrier telephone of electric locomotive undergrourd;
井下电机车载波电话自适应除噪技术的应用
The applications of remote communication techniques, including line carrier wave based remote control and remote alarm based on short message of mobile telephone in small hydropower station monitoring and control system are introduced.
介绍了远程通信技术中基于电话线载波的远程控制技术以及基于手机短信息的远程报警技术在小型水电站监控系统中的应用,并给出了系统框图及部分硬件电路。
high -frequency channel
高频电路, 载波电话通路
power line carrier telephone terminal
电力线载波电话终端机
carrier telephone multiplexing equipment
载波电话多路复用设备
digital carrier telephone terminal machine
数字载波电话终端机
valve 3-channel carrier telephone terminal equipment
三路电子管载波电话终端机
transistorized 60-channel balanced cable carrier telephone system
晶体管60平衡电缆路载波电话设备
transistorized 3-channel carrier telephone terminal equipment
三路晶体管载波电话终端机
open-wire 12-channel carrier telephone terminal equipment
明线１２路晶体管载波电话终端机
Products packaging of carrier telephone equipment
GB/T13038-1991载波电话设备包装
Performance requirements for 120-channel submarine coaxial cable carrier telephone equipment
GB/T13431-1992120路海底同轴电缆载波电话设备技术要求
Performance requirements for 24-channel submarine coaxial cable carrier telephone equipment
GB/T13430-199224路海底同轴电缆载波电话设备技术要求
Measurement methods for 120-channel submarine coaxial cable carrier telephone equipment
GB/T13429-1992120路海底同轴电缆载波电话设备测试方法
Measurement for 24-channels submarine coaxial cable carrier telephone equipment
GB/T13425-199224路海底同轴电缆载波电话设备测试方法
Specification for 12-channel transistorized carrier telephone equipment on an open-wire pair
GB/T5446-1985明线12路晶体管载波电话设备技术要求
Requirements for 3-channel carrier telephone equipment on an open-wire pair
GB/T6555-1986明线3路载波电话设备技术要求
The test methods for 60-channel symmetrical cable carrier telephone equipment
GB/T4770.3-1984对称电缆60路载波电话设备主要性能的测试方法
Specification for HF 12-channel transistorized carrier telephone equipment on an open-wire pair
GB/T5445-1985明线高12路晶体管载波电话设备技术要求
The test methods for 12-channel open wire carrier telephone equipment
GB/T4770.2-1984明线12路载波电话设备主要性能的测试方法