Rigol MSO/DS2000A Series Uživatelský manuál stáhnout pdf (Strana 119)

Chapter 5 To Trigger the Oscilloscope RIGOL

MSO2000A/DS2000A User’s Guide 5-33

Duration Trigger (Option)

In duration trigger, the instrument identifies a trigger condition by looking for the

duration of a specified pattern. This pattern is a logical “AND” combination of the two

channels. Each channel can have a value of high (H), low (L) or don’t care (X). The

instrument triggers when the duration (△T) of this pattern meets the preset time, as

shown in the figure below.

CH1=H

CH2=L

CH1

CH2

Figure 5-10 Duration Trigger

Trigger Type:

Press Type to open the trigger type list. Rotate and press down to select

“Duration”. At this point, the trigger setting information as shown in the figure below

is displayed at the upper right corner of the screen. For example,

Source Selection:

Press Source to open the signal source list and select CH1, CH2 or any channel of

D0-D15. For the details, please refer to the introduction in “

Trigger Source”. The

current trigger source is displayed at the upper right corner of the screen.

Pattern Setting:

Press Code to set the pattern of the current channel. At this point, the pattern

setting area (as shown in the figure below) is displayed at the bottom of the screen.



: set the pattern of the channel selected to “H”, namely the voltage level is

higher than the threshold level of the channel.

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Rigol MSO/DS2000A Series Uživatelský manuál Strana 119