MS400 datasheet(35/51 Pages) EXTECH

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MS400 Version 2.0 – December 2007

Figure 38: Edge Trigger

Triggering Control

There are two triggering modes: Edge and Video. Each trigger mode is set by menu

functions:

Edge triggering

occurs when the trigger input passes through a given level in the

specified direction.

Video triggering:

Perform video field trigger or line trigger on standard video signals.

The following describes the Edge and Video triggering menus respectively.

Edge Triggering

With Edge triggering selected, the trigger occurs on the rising or falling edge of the

input signal, if the triggering threshold is met.

The Edge triggering menu:

Function

Settings

Description

Slope

Rise

Fall

Triggering on the rising edge of the signal.

Triggering on the falling edge of the signal.

Signal

source

CH1

CH2

CH1 is used as the trigger source.

CH2 is used as the trigger source.

Trigger

mode

Auto

Normal

Single Shot

Acquisition of waveforms is possible even if there is

no triggering condition detected.

Acquisition of waveforms can only be performed

when the triggering condition is satisfied.

The sampling is performed on a waveform when one

trigger is detected, then sampling ceases.

Coupling

suppression

With this mode selected, the DC component is

prevented from passing-through.

All dc components are allowed to pass.

The HF part of the signal is prohibited and only the LF

component is allowed.

The LF part of the signal is prohibited and only the HF

component is allowed to pass

MS400 Datasheet(PDF) 35 Page - Extech Instruments Corporation.

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