modulating a signal

[PKBombay]

I have a 24MHz sinewave input. I have to vary this between 26MHz and 22MHz. For this I have to add a function that would do this thing. I am not supposed to add another sine function as my output would then be distorted. How am I supposed to go about this?

[Nisar F]

Hi,

I hope you are doing fine. Can you please let me know what hardware/Labview software are you using for this application?

Can you also please send your code?

Best regards,

[PKBombay]

Hi,

I am doing ok, thank you. I am using Labview version 7.1

I am basically doing a laser based project. The basic idea here is to control the laser beams by tuning the frequencies. I am seeing those beams on a camera monitor.

There is a RF card that is plugged into the system that I am using which is in turn running the DVE program. I have the source code for this program and what I have to do is modify one of the VIs which will basically control the beams. There are 2 channels, one is the horizontal channel and the other is the vertical channel. The input for the horizontal channel is 24MHz and for vertical is 17MHz (both sine waves); these are the values at which I can see all the 4 beam spots clearly.

Now, I have to add a 2MHz function to this input 24MHz sine wave to vary the input sine wave by -2MHz and +2MHz; a similar thing has to be done for 17MHz channel.

I am attaching the code that I am working on. There is also a sub vi named AD 9852 SET FTW which you may want to check.

Many thanks

[Nisar F]

Hi,

Can you please send me the subvi separately ?

Thanks,

[PKBombay]

Here u go...

FTW1 and FTW 2 are the same.

Thanks