using matlab and or python to read an hdf5 (.h5) file that contains data from a segmented memory collect, the file has 3 groups and associated attributes, specifically the /waveform dataset has attributes of startindex, segmentedxorg and others..., i am guessing that these two are to be used to align the measurements.
1. where can i find the document which describes these variable and how they are to be used?
2. or a matlab/python would be helpful as well
thanks
al - thank you for the reply, will as tom & matthew for the info.
tom & matt - is the help file available on line (since I don't have the scope). thanks
v/r
mike
al - yes, you are correct, its a later model scope, example dataset (.hdf) was from tom & matthew, will include FW in future postings. we are looking into the keysight scope for future use in our lab and looking at its phase performance. thanks again
Mike,
The manuals are separately downloadable , for free:
Infiniium 6.00 System Software for Windows 7 | Keysight (formerly Agilent’s Electronic Measurement)
They're in the lower left corner of the page.
As for phase performance, I'd be interested in what you find. We have consistently had the best phase and magnitude performance for a while. The newer scopes, S-series and V-series, have a page of RF characteristics in their datasheets.
I missed your earlier request for MATLAB or Python. I have attached a script I got a few years ago. I haven't had an opportunity to test it. There are a bunch of hdf5 utilities in the File Exchange at Mathworks.com
Al
al - using matlab to process the the segmented memory hdf file, theres an XOrg variable within the '/Waveforms/Channel3.Attributes' and within the 'Dataset.Attribute' a variable named segmentedXOrg, each segment Dataset has a slightly different value for segmentedXOrg. if the segmented memory measurements are made asynchronously then i would guess each segmented memory capture would be aligned by using segmentedXorg, i could not find anything in the help files regarding segmentedXorg, is this a 'stale' variable and i should be using the XOrg at the higher group level for all measurements, or is there another manual that could provide the details on the segmentedXorg variable? many thanks
v/r
mike
You don't indicate what version of scope FW you are using, but I assume that it's recent. The format of the hdf5 files created by the scope is in the built-in help. If you have specific questions about the info in the file, that aren't answered in the help files, you can post here in the forums, or call your local Technical Contact Center. Note that the forums are not monitored on a regular basis, so calling the TCC may be better.
Al