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1.发明授权Method and apparatus for determining the value of analog voltages occurring on telephone subscriber lines of a digital telephone exchange 失效用于确定在数字电话交换机的电话用户线上出现的模拟电压的值的方法和装置
公开(公告)号：US4691337A
公开(公告)日：1987-09-01
申请号：US849653
申请日：1986-04-09
CPC分类号： H04M3/30
摘要： Analog voltages are collected by scanning the two wires of a subscriber line; the values are subjected to an analog-digital conversion and fed to a microprocessor (MC) which computes the desired measuring values from the results of said conversion. Thus, from a single measuring operation performed at two measuring points, nine different voltage values can thus be obtained including dc, ac and external voltages between each wire and ground and between the two wires.
摘要翻译： 通过扫描用户线的两条线来收集模拟电压; 这些值经受模拟数字转换并馈送到微处理器（MC），微处理器（MC）根据所述转换的结果计算所需的测量值。 因此，通过在两个测量点进行的单次测量操作，可以获得包括每条导线与地之间以及两条导线之间的直流，交流和外部电压的九个不同的电压值。
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2.发明授权Method for determining telephone dial pulse parameters independently of subscriber line length 失效独立于用户线路长度确定电话拨号脉冲参数的方法
公开(公告)号：US4839920A
公开(公告)日：1989-06-13
申请号：US900039
申请日：1986-08-25
摘要： A method is disclosed for measuring telephone dial pulse parameters independent of telephone subscriber line length. To avoid distortions resulting from varying subscriber line lengths, there is performed during the first pulse interval of a dial pulse series to be measured, a voltage measurement with results in a value that depends on the line length, and, in accordance with this value, the times measured for pulse interval and pulse duration of the dial pulse series are corrected.
摘要翻译： 公开了用于独立于电话用户线路长度测量电话拨号脉冲参数的方法。 为了避免由不同的用户线路长度导致的失真，在要测量的拨号脉冲序列的第一脉冲间隔期间进行，电压测量结果取决于线路长度，并且根据该值， 校正拨号脉冲序列的脉冲间隔和脉冲持续时间的时间。
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3.发明授权Method for measuring resistances, in particular resistances of subscriber's 失效用于测量电阻的方法，特别是数字时分复用电信网络用户线路的电阻
公开(公告)号：US4882742A
公开(公告)日：1989-11-21
申请号：US229575
申请日：1988-08-08
申请人： Wolfgang Kaiser , Werner Schmutzler
发明人： Wolfgang Kaiser , Werner Schmutzler
IPC分类号： G01R27/02
摘要： Before each actual resistance measurement, a first preliminary measurement with short-circuited measuring circuit and a second preliminary measurement with the measuring circuit operating at no-load are carried out. From the measured values of the preliminary measurement steps, a weighting factor is calculated, by which, subsequently, the difference between the actual measured value and the short-circuit value is multiplied to form the actual measurement results.
摘要翻译： 在每个实际电阻测量之前，进行具有短路测量电路的第一次初步测量以及测量电路在空载下工作的第二初步测量。 根据初步测量步骤的测量值，计算加权因子，然后乘以实际测量值和短路值之间的差以形成实际测量结果。
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