Manual Fluke 190-062-III (page 50 of 98) (English)

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190 Series III

Users Manual

At the bottom of the screen the trigger parameters show. See Figure 25. For example, input A is

used as the trigger source with a positive slope.

Figure 25. Screen with all Trigger Information

When a valid trigger signal is found, the trigger key will be lit and the trigger parameters appear in

black. When no trigger is found, the trigger parameters appear in gray and the key light will be

off.

Trigger Delay or Pre-Trigger

You can begin to display the waveform some time before or after the trigger point has been

detected. Initially, you have a half screen (6 divisions) of pre-trigger view (negative delay).

To set the trigger delay:

1. Press and hold down N to adjust the trigger delay.

Observe that the trigger icon on the screen moves to show the new trigger position. When the

trigger position moves left off of the screen, the trigger icon changes to indicate that you have

selected a trigger delay. Moving the trigger icon to the right on the display gives you a pre-trigger

view. This allows you to see what happened before the trigger event, or what caused the trigger.

In case of a trigger delay, the status at the bottom of the screen changes. See Figure 26. For

example, input A is used as the trigger source with a positive slope. The 500.0 ms indicates the

(positive) delay between trigger point and waveform display. When a valid trigger signal is found,

the trigger key will be lit and the trigger parameters appear in black. When no trigger is found, the

trigger parameters appear in gray, ands the key light will be off.

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Fluke 190-062-III Manual

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