专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明公开

EP0257726A2 Sweep generator error characterization 失效
标题翻译： Kipgenerators的Prüfungder Fehlereigenschaft。
公开(公告)号：EP0257726A2
公开(公告)日：1988-03-02
申请号：EP87301946.7
申请日：1987-03-06
申请人： TEKTRONIX, INC.
发明人： Stevens, Douglas Clifford , Fox, Henry Gregory
IPC分类号： G01R13/24
CPC分类号： G01R13/24
摘要： A delay time between the start of a trace on an oscilloscope screen and a point along the trace is computed based on measured "sweep gain" and "sweep start" parameters characterizing a triggered sweep signal controlling the horizontal position of an electron beam creating the trace, the sweep signal increasing when triggered from a starting level at a constant slew rate to move the beam at a constant speed across the screen. The sweep start parameter is the value of input data applied to a digital-to-analog converter (DAC) which would cause the DAC to produce an output voltage equal to the sweep signal starting level, and the sweep gain indicates the rate of increase in DAC input data required to produce a DAC output signal with a rate of increase similar to the slew rate of the sweep signal. The horizontal position of the point along the trace is the beam position on the screen at the moment the sweep signal magnitude reaches the magnitude of the DAC output signal. The delay time is computed as the difference between the DAC input data resulting in this DAC output signal magnitude and the sweep start parameter, the difference being divided by the sweep gain parameter.
摘要翻译：基于测量的“扫描增益”和“扫描起始”参数来计算示波器屏幕上的迹线开始和沿着迹线的点之间的延迟时间，其特征在于控制电子束的水平位置产生痕迹的触发的扫描信号，当以恒定的转换速率从起始电平触发时扫描信号增加，以在屏幕上以恒定的速度移动光束。扫描启动参数是应用于数/模转换器（DAC）的输入数据的值，这将导致DAC产生等于扫描信号起始电平的输出电压，扫描增益表示增益率产生DAC输出信号所需的DAC输入数据，其速率与扫描信号的转换速率相似。沿着迹线的点的水平位置是扫描信号幅度达到DAC输出信号幅度的屏幕上的光束位置。延迟时间被计算为导致该DAC输出信号幅度的DAC输入数据与扫描启动参数之间的差，该差除以扫描增益参数。

IPRDB

热门服务

关于我们

友情链接

联系方式