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 [[NVGate Macro|a macro]]. The setup must contain three input channels [[NVGate_Software_overview#Step_1:_Inputs_selection|connected]] to [[NVGate_Recorder|the recorder]] and the [[NVGate FFT Analyzer|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 "[[NVGate Ribbons: Tools Tab|Tools]]" tab of the [[NVGate Ribbons overview|NVGate Ribbon]] :  

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

To create the alarm, select "Add Alarm" from the [[NVGate Ribbons overview|NVGate ribbon]] :  

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

Then, add the "Manual trigger" (by using the record option of the [[NVGate Macro|the Macro]]) into the If command.

You can now run the measurement and start the [[NVGate Macro|the Macro]]: The recording of the signal will began only if the spectrum of the first input cross the mask template.