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1.发明授权Circuit arrangement for reproducing a tolerance range on a cathode-ray indicator 失效用于在阴极射线指示器上重现宽容范围的电路布置
公开(公告)号：US3582773A
公开(公告)日：1971-06-01
申请号：US3582773D
申请日：1968-10-30
Applicant: ERICSSON TELEFON AB L M
Inventor： KARL HENIZ GEORG
CPC classification number: G01R13/208 , G07C3/14 , G09G1/143
Abstract: A circuit arrangement provides for the generation of horizontal and vertical line segments related to voltage levels and frequencies, respectively, on a cathode-ray indicator to indicate the tolerance range of the transfer characteristic of a frequency sensitive measuring device. The device receives a sweep frequency signal from a sweep frequency generator. The sweep frequency generator in conjunction with a sawtooth generator is used by circuitry which performs level comparisons at particular frequencies on the output signal of the measuring device to provide intensity modulating pulses that are fed to the cathoderay indicator.
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