labview waveform chart

[yaooo]

Hello dear Labview colleagues,

I'm using a microchip dspic30f4011 MCU to send an external signal to my computer, and then using LabVIEW to monitor the waveform. However, in my program, the values ​​in the read buffer are fluctuating, but I can't see anything on the waveform. I'd like to ask what could be causing this. Thank you.

[yaooo]

This is my program.

[Yamaeda]

Are you plotting on a Chart or a Graph? Charts have a built in buffer so you can send one sample at a time and it'll draw just fine, with a Graph you'll have to build an array in memory and plot it all.

[Yamaeda]

Oh, you can't plot the VISA ref! You have to convert the pink string-wire!

[yaooo]

I use a signal generator to transmit signals to the computer via an MCU, and then use LabVIEW to monitor them.
I don't understand what you mean.

[cordm · Accepted solution]

Use the pink wire, the purple wire is the visa reference.

If this does not work, show the sender code from the MCU. 

[yaooo]

I tried your method and successfully saw the waveform in LabVIEW. Thank you very much.