Invention Grant
- Patent Title: Automatic program test circuit for data sets
- Patent Title (中): 数据集的自动程序测试电路
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Application No.: US3591719DApplication Date: 1968-06-07
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Publication No.: US3591719APublication Date: 1971-07-06
- Inventor: CROWSON FRED B , PREVITE RICHARD A
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US73531768 1968-06-07
- Main IPC: H04L12/26
- IPC: H04L12/26 ; H04L25/04 ; H04L25/02
Abstract:
An automatic test circuit for simultaneously testing a plurality of data sets wherein the test circuit provided for each data set a multiphase program which includes sending test signals to the data set and measuring the distortion of signal received from the data set. During a measuring phase the test circuit enables each data set to contend for a common measuring circuit to apply signals to the measuring circuit upon seizure thereof and to thereafter release from the measuring circuit in response to a signal from the data set. The test circuit then either advances to the next program phase if the distortion of the measured signals is below a predetermined threshold level or again bids for the measuring circuit to repeat the measuring phase if the distortion exceeds the threshold level.
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