User`s guide

RIGOL

User’s Guide for DS1000E, DS1000D Series

2-59

Trigger, such as the output of Power supply.

NOTE: When horizontal control is set under 50 ms/div, Auto mode allows the

oscilloscope not to capture trigger signal.

 Normal:

The Normal mode allows the oscilloscope to acquire a waveform only when it is

triggered. If no trigger occurs, the oscilloscope keeps waiting, and the previous

waveform, if any, will remain on the display.

 Single:

In Single mode, after pressing the RUN/STOP key, the oscilloscope waits for

trigger. While the trigger occurs, the oscilloscope acquires one waveform then

stop.

3. Coupling:

Trigger coupling determines which signal component passing to the trigger circuit.

Coupling types include AC, DC, LF Reject and HF Reject.

 AC: AC coupling blocks DC components and attenuates the signal below

10Hz.

 DC: DC coupling passes both AC and DC components.

 LF Reject: LF Reject coupling blocks DC component, and attenuates all

signal with a frequency lower than 8 kHz.

 HF Reject: HF Reject coupling attenuates all signals with a frequency

higher than 150 kHz.

4. Pre-trigger/delayed trigger:

The data collected before and after trigger.

The trigger position is typically set at the horizontal center of the screen. In the

full-screen display the 6div data of pre-trigger and delayed trigger can be

surveyed. More data (14div) of pre-trigger and 1s delayed trigger can be

surveyed by adjusting the horizontal knob.