Rigol MSO/DS2000A Series Uživatelský manuál stáhnout pdf (Strana 112)

RIGOL Chapter 5 To Trigger the Oscilloscope

5-26 MSO2000A/DS2000A User’s Guide

Pattern Trigger

Identify a trigger condition by looking for a specified pattern. This pattern is a logical

“AND” combination of the channels. Each channel can be set to high (H), low (L),

don’t care (X), rising edge or falling edge. When a rising or falling edge is specified,

the oscilloscope will trigger at the edge specified if the input signals for other

channels are consistent with the pattern currently set. If no edge is specified, the

oscilloscope will trigger on the last edge that makes the pattern true. If all the

channels in the pattern are set to “Don’t Care”, the oscilloscope will not trigger.

…

(CH1

-CH2

or D0-

D15)

…

(CH1-CH2 or D0-

D15)

Figure 5-7 Pattern Trigger

Trigger Type:

Press Type, rotate to select “Pattern” and press down . At this point, the

trigger setting information is displayed at the upper right corner of the screen. For

example,

. The trigger type is pattern trigger; the current trigger

source is CH1; the trigger level is 1.84 V.

Source Selection:

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

D0-D15. 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 source. 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 112