Understanding Data Acquisition for these VI's

[simplyzee]

Good morning, 

I'm a fairly new user to LABVIEW, and have been currently looking over the Agilent_e4990 driver associated with a keysight e4990 impedence analyzer, but I have a few questions. Particularly, there are 2 VI's I would like to use, one which would query the frequency range and one that would configure DC bias. After looking over the block diagram, I can't seem to understand how data is being recorded in these 2 cases, and where could one access the data for later revision or use. Any help would be greatly appreciated, 

Thank you for your time 

-SimplyZee

[santo_13]

Questions about how the driver functions beyond looking at the implementation have to be answered by the manufacturer.

For any programming commands please refer to the programmer's manual of the instrument to understand better.

[billko]

Did you look at the examples included in the driver package?

[RTSLVU · Accepted solution]

A quick look at the VIs you posted

1. Configure DC Bias does this:
   1. Query's the instrument for its operating mode
   2. Builds the proper SCPI command based on the mode and input parameters
   3. Sends that SCPI command string to the instrument
   4. It does NOT record or save anything
2. Query Frequency Range does this:
   1. Sends the SCPI command string for Max frequency
   2. Receives the response string and converts it to a numeric
   3. Sends the SCPI command string for Min frequency
   4. Receives the response string and converts it to a numeric
   5. You can save the numerics any way you want

[simplyzee]

Thank you so much for the easy to follow explanation. 

The respective lab manual has some general cases to look over, but I really needed to contextualize these two VI's. Very helpful 

Thank you once again.