GDS-800 Series Digital Storage Oscilloscope Operation Manual 
 
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For example, a signal is display on the screen as figure 5-8.   
 
Figure 5-8: The stopped waveform 
The sample rate is 250kS/s and the record length is 2500, according the formula we 
have 
 
There are 10ms of data in the waveform record. Users may change the “delay 
trigger indicator” to observe the total waveform record.   
 
Figure 5-9: Increasing “delay trigger indicator” shifts the waveform to the left