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1. 发明授权

US3751708A Sweep circuit for oscilloscope 失效
标题翻译：振荡电路的振荡电路
公开(公告)号：US3751708A
公开(公告)日：1973-08-07
申请号：US3751708D
申请日：1971-05-14
申请人： WANDEL & GOLTERMANN
发明人： HARZER P
IPC分类号： G01R13/20 , G01R13/26 , H01J29/80
CPC分类号： G01R13/26 , G01R13/208
摘要： The beam of a cathode-ray tube, normally suppressed, is electromagnetically deflected by a triangular current in the x direction and by a sinusoidal current of substantially higher frequency in the y direction, thereby producing an invisible grid on the oscilloscope screen. Whenever the y-deflection signal matches an input signal to be visualized, the beam is turned on for a small fraction of a y-sweep cycle during which the y sweep is interrupted whereby a short horizontal trace is produced on the screen. For tracing a horizontal base line in response to a given reference signal, the x sweep may be momentarily accelerated to the frequency of the y sweep which in this case is interrupted for a full cycle; this acceleration takes place on every nth intersection of the y sweep with the imaginary base line.
摘要翻译：通常被抑制的阴极射线管的光束在x方向上被三角形电流和在y方向上具有实质上更高频率的正弦电流电磁偏转，从而在示波器屏幕上产生不可见的栅格。每当Y偏转信号与要被可视化的输入信号相匹配时，光束将被打开一小段y扫描周期，在此期间y扫描被中断，从而在屏幕上产生短的水平轨迹。为了响应于给定的参考信号来跟踪水平基线，x扫描可以被瞬时加速到y扫描的频率，在这种情况下在一个整周期中被中断; 该加速度发生在y扫描与虚拟基线的每第n个交点处。

2. 发明授权

US3721856A Switching system for plural projection of traces on screen of single-beam cathode-ray tube 失效
标题翻译：单梁阴极射线管屏幕上投影轨迹的切换系统
公开(公告)号：US3721856A
公开(公告)日：1973-03-20
申请号：US3721856D
申请日：1970-12-14
申请人： WANDEL & GOLTERMANN
发明人： DICK R
IPC分类号： G01R13/28 , H01J29/70
CPC分类号： G01R13/28
摘要： Two or more signals to be visually displayed on the screen of a single-beam cathode-ray tube are alternately fed to the vertical deflection electrodes of that tube for periods of different duration to generate traces distinguishable from one another by their brightness and/or the length of their strokes. In the first instance, they are interrupted for different fractions of a sweep cycle. In the second case, each trade is triggered on for a whole number of such cycles.
摘要翻译：在单光束阴极射线管的屏幕上可视地显示的两个或更多个信号被交替地馈送到该管的垂直偏转电极，持续时间不同，以产生彼此可通过其亮度和/或他们的笔画的长度。在第一种情况下，它们会因扫描周期的不同部分而中断。在第二种情况下，每个交易都会触发一整个这样的周期。

3. 发明授权

US3663954A System for measuring higher order nonlinearities of a signal/transmitting network 失效
标题翻译：用于测量信号/发送网络的较高阶非线性的系统
公开(公告)号：US3663954A
公开(公告)日：1972-05-16
申请号：US3663954D
申请日：1970-07-10
申请人： DIETRICH EKKEHARD ALKER , WANDEL & GOLTERMANN , FRANZJOSEF LANDWEHR
发明人： ALKER DIETRICH-EKKEHARD
IPC分类号： G01R27/28 , G01N27/00
CPC分类号： G01R27/28
摘要： The output of a random-noise generator is modulated with the aid of two fixed reference frequencies G1, G2 (one of which may be zero) to yield two mutually transposed but correlated noise bands overlapping in a frequency range which substantially coincides with a band of signal frequencies to be transmitted through a test circuit to be examined for second-order and third-order nonlinearities. With the sum or difference of any two correlated signal frequencies fi'', fi'''' in the two noise bands equal to a primary beat frequency F1 G2 + OR - G1, the amplitude of a signal of this beat frequency in the output of the test circuit receiving the two wholly or partly coincident noise bands is a measure of second-order nonlinearity of that test circuit throughout the signal band. The superposition of a pilot oscillation of frequency G3 (lying within the pass band of the test circuit) upon the primary beat frequency F1 gives rise to a secondary beat frequency F2 F1 + OR - G3 whereby the amplitude of another output signal, having this frequency F2, is a measure of third-order nonlinearity of the test circuit.
摘要翻译：随机噪声发生器的输出借助于两个固定参考频率G1，G2（其中一个可以为零）来调制，以产生两个相互转置但相关的噪声频带，其频率范围基本上与要通过测试电路传输的信号频率用于二阶和三阶非线性。利用等于主拍频F1 = G2 +/- G1的两个噪声频带中的任何两个相关信号频率fi'，fi'的和或差，在该输出中的该拍频的信号的幅度接收两个全部或部分重合噪声频带的测试电路是该测试电路在整个信号频带内的二阶非线性度量。频率G3（位于测试电路的通带内）的导频振荡与主拍频F1的叠加产生次级拍频F2 = F1 +/- G3，由此具有这样的另一输出信号的振幅频率F2是测试电路的三阶非线性度量。

4. 发明授权

US3488582A System for generating a spectrum of beat frequencies to measure harmonics of a test frequency 失效
标题翻译：用于产生频谱频谱以测量测试频率的谐波的系统
公开(公告)号：US3488582A
公开(公告)日：1970-01-06
申请号：US3488582D
申请日：1967-03-06
申请人： WANDEL & GOLTERMANN
发明人： BAYER HERBERT , COENNING FRANK
IPC分类号： G01R23/00 , G01R27/02
CPC分类号： G01R23/00

5. 发明授权

US3480862A Frequency-selective signal-transmission system with linearity-testing means 失效
标题翻译：具有线性测试手段的频率选择性信号传输系统
公开(公告)号：US3480862A
公开(公告)日：1969-11-25
申请号：US3480862D
申请日：1967-06-20
申请人： WANDEL & GOLTERMANN
发明人： BAYER HERBERT
IPC分类号： G01R19/00 , G01R23/00 , G01R23/20 , H04B3/48 , G01R1/02
CPC分类号： G01R23/00 , G01R19/0007 , G01R23/20 , H04B3/48

6. 发明授权

US3443250A System of series-connected band-pass filter networks 失效
标题翻译：系列连接带通滤波器网络系统
公开(公告)号：US3443250A
公开(公告)日：1969-05-06
申请号：US3443250D
申请日：1965-05-12
申请人： WANDEL & GOLTERMANN
发明人： FEISTEL KARL HEINZ
IPC分类号： H03H7/01 , H01H7/10 , H01P5/12
CPC分类号： H03H7/01

7. 发明授权

US3414809A Method and apparatus for measuring group delay over four-pole networks by using a single identification frequency with no need for an additional reference connection between sender and receiver 失效
标题翻译：用于通过使用单个识别频率来测量四极网络上的组延迟的方法和装置，不需要发送器和接收器之间的附加参考连接
公开(公告)号：US3414809A
公开(公告)日：1968-12-03
申请号：US47082865
申请日：1965-07-09
申请人： WANDEL & GOLTERMANN
发明人： GUNTHER HOFFMANN , FRANK COENNING
IPC分类号： G01R27/28 , H04B3/462
CPC分类号： H04B3/462 , G01R27/28

8. 发明授权

US3899738A System for measuring group delay and/or attenuation in closed signal-transmission loop 失效
标题翻译：用于测量封闭信号传输回路中组延迟和/或衰减的系统
公开(公告)号：US3899738A
公开(公告)日：1975-08-12
申请号：US49584874
申请日：1974-08-08
申请人： WANDEL & GOLTERMANN
发明人： HARZER PETER
IPC分类号： H04B3/462 , H04B7/14
CPC分类号： H04B3/462
摘要： Several measuring stations are linked with one another by line segments enabling signal transmission thereover in a closed loop, each station including a receiving section and a transmitting section. A selector switch in the transmitting section enables establishment of a first position (I) for sending out signals originating at that section, a second position (II) for retransmitting an incoming modulating frequency (f3), and a third position (III) for transmitting a replica of an incoming modulated carrier wave.
摘要翻译：几个测量站通过线段相互链接，使得能够在闭环中进行信号传输，每个站包括接收部分和发送部分。在发送部分中的选择器开关使得能够建立用于发送源于该部分的信号的第一位置（I），用于重发输入调制频率（f3）的第二位置（II）和用于发送的第三位置（III）输入调制载波的复制品。

9. 发明授权

US3867694A Monitoring circuitry for amplitude-measuring system 失效
标题翻译：监测电路测量系统
公开(公告)号：US3867694A
公开(公告)日：1975-02-18
申请号：US40467873
申请日：1973-10-09
申请人： WANDEL & GOLTERMANN
发明人： RAUSCHER WERNER
IPC分类号： G01R19/00 , G01R19/165 , G01R23/00 , H04J1/16 , G01R19/16 , G01R19/22
CPC分类号： H04J1/16 , G01R19/0007 , G01R19/1658 , G01R23/00
摘要： A system for monitoring the amplitude levels of signal channels in a manually or automatically explored frequency band includes a monostable multivibrator (monoflop) controlled by a voltage comparator which responds to signal levels exceeding a predetermined threshold. During its off-normal period, the monoflop energizes an indicator lamp through an OR gate also receiving the comparator output so that the lamp remains lit for at least a minimum period upon each sweep of a frequency selector across a signal channel of elevated amplitude level.
摘要翻译：用于监视手动或自动探测的频带中的信号通道的幅度电平的系统包括由电压比较器控制的单稳态多谐振荡器（单稳态），该电压比较器响应于超过预定阈值的信号电平。在其非正常时段期间，单通道通过还接收比较器输出的或门激励指示灯，使得在频率选择器每升高幅度水平的信号通道上每次扫描时，灯保持点亮至少最小时间。

10. 发明授权

US3725784A Automatic calibrating and measuring system 失效
标题翻译：自动校准和测量系统
公开(公告)号：US3725784A
公开(公告)日：1973-04-03
申请号：US3725784D
申请日：1971-06-07
申请人： WANDEL & GOLTERMANN
发明人： BAYER H
IPC分类号： G01R1/28 , G01R1/02 , G01R1/38
CPC分类号： G01R1/28
摘要： A system with a test position for measuring the amplitude (or phase) of an incoming signal wave of predetermined frequency is repetitively switched over to a calibrating position in which the system receives a reference oscillation of constant frequency and phase for automatically readjusting its circuits, if necessary. If the input signal disappears or drops below a certain minimum level, a sensing circuit reduces the rate of switchover or arrests the system in test position to reduce wear of the relay contacts employed therefor. A random or quasi-random change in that rate may be utilized to prevent false indications due to the stroboscopic effect of periodic switchover in the presence of a modulating frequency close to the switching rate.
摘要翻译：具有用于测量预定频率的输入信号波的幅度（或相位）的测试位置的系统被重复地切换到校准位置，其中系统接收恒定频率和相位的参考振荡以自动重新调整其电路，如果必要。如果输入信号消失或下降到某一最低电平以下，则检测电路会降低切换速率或将系统停止在测试位置，以减少为此而使用的继电器触点的磨损。可以利用该速率的随机或准随机变化来防止由于在接近切换速率的调制频率的存在下周期性切换的频闪效应引起的错误指示。

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