With the help of modulated signal pulse width (square wave) to control when a signal is enabled or disable

With the help of modulated signal pulse width (square wave) to control when a signal is enabled or disable

Hello all

I am using a modulated signal to labview created pulse width (square wave) to control when a signal is activated or not.

Here is my logic and a concrete example:
(1) the wave source signal is continuous
(2) use a PWM (square wave) created in labview to control when the signal is enabled or disabled
(3) if the PWM (amplitude) signal is superior to 0 play signal PWM is not greater than 0 do not play signal.

I use actually this to the sequence step / pulse several distinct magnetic coils using my audio card (which has several channels of audio output), I have a signal in labview played constantly.  As to compare it to the PWM (square wave) which controls whether or not the signal is played on each separate channel.  That way I can control which coil is on and offshore and in what order they are activated.

I couldn't find an edge detection for a square wave created in labview, so I tried the limits, but it doesn't seem to work unless I change the phase manually and it only goes 1-1.  I'm just trying to compare the PWM (edges of the square wave) already created by labview / play a signal if the pulse is greater than 0 and it shuts off the signal, if she is less than 0.

Should I do this another way

TIA

A waveform contains an array of values. You must check every value and respond accordingly:

Tags: NI Software

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