User Manual

SIGLENT
164 User Manual
To Use the History Function
The history function can record the waveforms of the input channels before press the
Run/Stop button. In run state, the oscilloscope records input waveform continually; when
fill up the memory (reach the maximal frame), the new frames will cover the old frames
and keep the latest frames.
To use the History function, the HORIZONTAL Format must be set to YT.
Do the following steps to record and replay waveform:
1. Press the History button on the front to enable the History function.
 When in run state, the waveform will enter the stop state.
 When in stop state, and then enable the History function, the oscilloscope will
keep the stop state.
 Press History or Stop button to turn off History function.
2. Press the List softkey to turn on or off the list display. The list records the timestamp
of every frame. It is accurate to microseconds.
Figure 72 History
3. Press the Frame softkey; then turn the Universal Knob to select the frame to display.
 The format of the Frame is A/B; A is the frames number that displaying on the
screen and B is the maximal frame number you can set.
 The maximal frame number is determined by the current sampling point (Curr
value) and sampling rate.
 When press the Run/Stop button or enable the history function, you may not get
the maximal frames, because the memory is not filled. So if you want to get the
maximal frames, please wait for enough time for acquisition.
The table shows the maximal frame according to the sampling rate and current