User Manual

RIGOL 10 Waveform Record
DS4000 User’s Guide
10-4
Record Constant On
DS4000 provides record “Open” mode for waveform record. When this mode is
enabled, the oscilloscope records the waveform continuously according to the
current memory depth. The length of waveform recorded is limited by the memory
depth and the waveform data recorded before will be overwritten by the waveform
currently recorded. In this mode, the other oscilloscope operations (except Pass/Fail
test as well as acquisition mode, sample mode, sample rate and memory depth in the
sample system setting) are not affected.
Press Record  Mode and use to select “Open”. At this point, the waveform
record key at the front panel turns red and the oscilloscope records the
waveform continuously according to the current memory depth. The oscilloscope
stops recording until users press RUN/STOP and at this point, users can play back
or analyze the waveform.
In constant on mode, the oscilloacope can capture the accidental abnormal signals
during the adjustment. Following is an application example of the record constant on
mode. Use DS4000 (CH1) to observe a square waveform which contains certain
overshoot and might be superposed with abnormal pulse.
1. Connect the signal output terminal to CH1 of the oscilloscope using the probe.
Adjust the oscilloscope to make it trigger stably.
2. Enable record constant on mode.