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    • 6. 发明申请
    • POWER LINE COMMUNICATIONS ANALYZER
    • 电力线通信分析仪
    • WO1994023366A2
    • 1994-10-13
    • PCT/US1994002065
    • 1994-02-23
    • ECHELON CORPORATION
    • ECHELON CORPORATIONSTEWART, J., MarcusRILEY, Glen, M.SUTTERLIN, Philip, H.ANDRUS, Marie, E.HURLBUT, Amy, O.TORMEY, Milton, T.
    • G06F11/09
    • H04B3/546G01R31/42H04B3/48H04B3/542H04B2203/5408H04B2203/5454H04B2203/5458
    • A power line communications analyzer (PLCA) providing a signal strength metering system and selectable signal attenuation functions and a means for adjusting the transmitting unit's attenuation and measuring error rate without the need for a user to be present at both the sending and receiving locations under test is disclosed. Each PLCA is coupled to a power line communication network via an electrical outlet and power lines. In actual operation, one of the PLCAs acts as a data transmitter and the other PLCA acts as a data receiver. The mode of operation of the PLCA can be dynamically altered during operation of the system. The PLCA comprises control logic that receives command inputs from a keypad, generates data packets for transmission on the power line communication network, receives and analyzes data packets received from the power line communication network, detects the power line signal and/or noise level and drives the LED display accordingly, and displays packet transmission information on an LCD display.
    • 提供信号强度计量系统和可选择的信号衰减功能的电力线通信分析仪(PLCA)和用于调整发射单元的衰减和测量误差率的装置,而不需要用户在待测的发送和接收位置处存在 被披露。 每个PLCA通过电源插座和电源线耦合到电力线通信网络。 在实际操作中,其中一个PLCAs作为数据发送器,另一个PLCA充当数据接收器。 PLCA的运行模式可以在系统运行过程中动态更改。 PLCA包括从键盘接收命令输入的控制逻辑,产生用于在电力线通信网络上传输的数据分组,接收并分析从电力线通信网络接收的数据分组,检测电力线信号和/或噪声电平并驱动 LED显示器,并且在LCD显示器上显示分组传输信息。
    • 7. 发明申请
    • STATUS MONITOR
    • 状态监视器
    • WO1984004010A1
    • 1984-10-11
    • PCT/US1983001836
    • 1983-11-22
    • COMSONICS, INC.
    • COMSONICS, INC.SHIMP, Richard, L.ZIMMERMAN, Dennis, A.
    • H04B03/48
    • H04B3/48
    • A status monitor for coaxial cable networks. The monitor is designed to be directly attached to an output port of an amplifier/repeater in the network and is used as an aid in trouble shooting faults in the network. The monitor comprises a detector (12 or 40) which generates a d.c. voltage indicative of the level of a pilot frequency signal on the network. This d.c. voltage is supplied to a plurality of voltage comparators (18, 20 and 22) which compare the d.c. voltage with different reference voltages in order to sense different fault conditions. If a fault condition is sensed, the outputs of the comparators are used by a tone selection logic (24) and an OR logic switch (26) to control a voltage controlled oscillator (30) to generate a modulating tone. A signal from a crystal controlled oscillator (32 or 48) or IF output of the detector (40) is modulated by the tone produced by the voltage controlled oscillator and radiated. This tone modulated radiated signal may then be used by a technician in field to detect both the location and the nature of the sensed fault in the network.
    • 公开了同轴电缆网络的状态监视器。 该显示器设计为直接连接到网络中的放大器/中继器的输出端口,并用于帮助故障排除网络中的故障。 该监视器包括检测器(12或40),其产生直流 指示网络上的导频信号的电平的电压。 这个d.c. 电压被提供给多个电压比较器(18,20和22),其比较直流电压。 电压具有不同的参考电压,以便感测不同的故障条件。 如果检测到故障条件,则比较器的输出由音调选择逻辑(24)和“或”逻辑开关(26)用来控制压控振荡器(28)产生调制音。 来自晶体控制振荡器(32)的信号或检测器(40)的IF输出由压控振荡器产生的音调进行调制并辐射。 该音频调制辐射信号然后可以由本领域的技术人员使用来检测网络中感测到的故障的位置和性质。