How to acquire a data from oscilloscope

[moongmo]

Hi there,

I am using Keysight DSO-X4104A oscilloscope model and Labview 2018.

My mission is to acquire a duty cycle data and waveform data from the oscilloscope and to record the duty cycle data every 0.1 seconds.

I programmed a VI using Agilent 2000 3000 X-Series basic examples.

This attached VI program basically works fine, but data is recorded only up to approximately one data per second.

Even if I speed up the timer loop of VI untill 10 ms, it doesn't record faster anymore.

I want to get more data per second, I want to know what is the problem.

[RTSLVU]

I don't have the Keysite scope VI's so I can't see what is happening inside them, one of the two is limiting your loop rate.

What interface are you using? (USB, Serial, GPIB, LXI) 

I ask because a serial interface running a slow baud rate could take that long to transfer the waveform data.

[moongmo]

Thank you for your answer.

I am using USB interface. 

If anyone can analyze my VI code and know why it limit loop rate, please answer me.

[RTSLVU]

Remove or use a "diagram disable" to determine what VI is taking so long.

Again I suspect the waveform transfer. We use LeCroy scopes here and they have a Ethernet interface. I have several tests the save waveforms and it takes a second or so to transfer a waveform even through Ethernet.

Is there a reason you need to see the waveform and update it live on screen?

[moongmo]

Thank you for your sincere advice.

I would like to check the signal output value, duty cycle, and waveform from my sensor in as possible as fast time to check that my sensor work fine.

I am curious too, if the reason for the slow data recording is because of physical interface or my programming code.

[RTSLVU]

Well I don't see anything in your code that would be causing it.