Reading bmp file from instrument and saving on computer

[Mikael_Garcia]

Hi,

I am trying to read a screen dump from a Keysight 34461A multimeter but I am having issues with saving the data on the computer as I don't really know what VI's/settings to use as I have not worked with image files this way before.

The code I am using is shown below (Fig. 1a and 1b). In this example I am reading the BMP data as a text string and it seems to work as I get a very long string (100K+) with strange characters (binary). But how do I instead save this data so I get a proper .bmp file on the computer? The code in Fig. 1b produces a .bmp file but my computer can't open it (MacOS). Tried the various endian options but no luck. Any help is appreciated! Thank you!

Fig. 1a. Reading it as a string.

Fig. 1b. Reading it as a string and writing as a binary file. File can't be opened on computer (MacOS).

[Mikael_Garcia · Accepted solution]

After some digging around here I found an old post from 2018 that contains the key to the solution!!! Here is the solution to that thread:

https://forums.ni.com/t5/LabVIEW/Convert-string-data-to-image-data/m-p/3812250#M1076599

With that in mind, I changed my code and now it works!! Here is my code now:

And here is the a screen dump bmp file that got saved onto my computer by using the code above:

For some reason the instrument does not like the PNG format even though the manual says that it can use either BMP or PNG in the command. Oh well, BMP is better than nothing!!