file output

[shenl024]

Hi guys,

    I want to save my output into multiple files ( one file for each scan), but right now my program save all the scans into one file. how to fix it? Thanks so much!

    Lei

[smercurio_fc]

Just put a for-loop around your Write to Measurement File Express VI and configure the Write to Measurement File Express VI to save to a series of files (double-click on it the VI).

[shenl024]

Thanks, I actually tried to configure it but every time it saves a lot of files even I only scan three times.

why do you suggest the for loop? I am using the for loop to control the number of scans in my program, but why do I need a for loop around the "write to measurement" vi?

Thanks

[smercurio_fc]

Did you not say you wanted each scan in a separate file? The DAQmx Read returns all your scans, so if you want to save them into separate files you need to peel them off and save them individually.

[shenl024]

Thanks. I tried but it didn't seem to work.

[Dennis_Knutson]

So why didn't you attach this code with the for loop that does not seem to work?

[shenl024]

thanks. please see the attachment.

[smercurio_fc]

I had told you to place the loop around the Write to Measurement File, not around the whole code. I can't really follow your code because it's so sloppily wired, and all the subVIs are missing. It appears that this is a different program than what you had before. In the previous one you had a DAQmx Read returning the data. I see no DAQmx functions in this new VI.

[shenl024]

Thanks a lot smercurio,

first of all, I have to put the loop around the whole code in order to repeat the scan.

sencond, the code is the same. I never use DAQ, all the sub VIs are from Princeton instruments to control our CCD camera.

[smercurio_fc]

---

shenl024 wrote: 

sencond, the code is the same. I never use DAQ, all the sub VIs are from Princeton instruments to control our CCD camera.

---

No, it's not. Look at the original VI you posted. Now look at the second VI you posted.