技术与服务热线:400 820 0372

中国 CN  

How can I Programmatically Determine the Trigger Time and Sample Point for a Set Record Length on the DL850/DL750?

To determine the exact trigger time of the waveform acquisition, use the ":HISTORY:TIME? 0" command, where 0 refers to the latest acquisition record.
To determine the exact trigger sample number, use the ":WAVEFORM:TRIGGER?" command. The number of samples that would be read from the scope is:

                        No. of Points = Record Length * 1.001

Since the trigger sample number is counted from the first point, you can ignore the last 0.1% of the record length. For example, if the record length is 10k points, the total sample points must be 10,000 *1.001 = 10,010 points. You can ignore the last 10 points, 10,000*0.001 = 10 points.

The Time Zero can be counted from the first point.
Sample Rate(SR): ':WAVEFORM:SRATE?'
Trigger Position(TP): ' :WAVEFORM:TRIGGER?'
The Time Zero is at this Trigger Point.
So the relative time of the first point of the wavefrom data is SR*TP*(-1).
 
Please refer to the attached image file of the DL850 Manual Instruction Manual IMDL850-01EM Chapter 3, for more information on how the total number of sample points is calculated.

相关产品和解决方案

数据采集设备

Yokogawa数据采集系统具备出众的灵活性和性能,能测量、显示、存储甚至促动各种物理和电气现象。

波形测量仪器

Yokogawa提供世界一流的数字示波记录仪:数字示波记录仪具有高速采样能力和大测量带宽,可用于设计和开发电子设备。示波记录仪集数字示波器和多通道数据记录仪的优点于一身。

示波记录仪

我们的示波记录仪是灵活、强大的多通道测试和测量解决方案,将高精度示波器和传统有纸图表记录仪的优点集于一身。Yokogawa的示波记录仪除了能在它的大显示屏上显示信号之外,还可以将信号保存到记录纸和/或存储介质中以便长期储存(如30天或更长),此外它还可以捕捉并分析非常快的瞬变信号。

高速数据采集器和数采仪

Yokogawa高速数据采集系统提供业界领先的隔离、位分辨率、采样速率和存储长度,带有独立的通道硬件和使用简单的软件。是示波记录仪中最领先的技术。

返回顶部
WeChat QR Code
微信扫一扫
获得更多专业服务