Difference between revisions of "NVGate Mask And Alarm"

This tutorial will show you how to use a mask and a an alarm to start the recording of 3 inputs when the FFT spectrum of the first input cross the mask. To do that, we will need a to use a mask, an alarm and a macro. The setup must contain three input channels connected to the recorder and the FFT plugins. The average spectrum must be displayed. The starting event of the recorder must be set on "Manual Trigger".<br>

The Mask manager can be found in the "Tools" tab of the NVGate Ribbon :  

[[Image:Ribbon.png|framed|none]]

To create a new mask, select "New" :  

[[Image:New.png|framed|none]]

 

 

Once you close the window, the mask is then created under the project in the project manager and can be drop into the result graph, here the FFT spectrum :  

[[Image:Mask+manager2.png|framed|none]]

We will use the If command of the Macro to start the recording on the crossing of the Mask. After creating a macro containing a while loop "Until measurement stopped", add the "If" command inside the loop and set it up as follow :  

[[Image:Reports_Tools_Ribbons_158.png|framed|none]]

 

Saves the mask with a new name in the current project.

=====/n octave mask settings=====

* Add a point  

[[Image:Reports_Tools_Ribbons_170.jpg|framed|none]]

: Switches to "Add point" mode.  In this mode, a new point is created by clicking in one of the two graph areas. A point with the same X-coordinate is added to the curve of the other graphic area. The Y-coordinate of this point is calculated by linear interpolation between previous and next point.

* Select a point  

[[Image:Reports_Tools_Ribbons_171.png|framed|none]]

: Switches to "Select" mode. A point is selected by clicking on it. The selected point can be moved by dragging and dropping. The drop area is bound by the X-coordinates of the next and previous points, and the Y-axis minimum and maximum values.

* Select all points  

[[Image:Reports_Tools_Ribbons_172.jpg|framed|none]]

: Selects all points on both curves. A curve can be translated on the Y-axis by moving one of its points.

* Remove selected point  

[[Image:Reports_Tools_Ribbons_173.jpg|framed|none]]

: Removes the selected point from both curves. The previous point becomes the new selected point. Not available if all points or one of the end points are selected.