[time-nuts] Re: Getting phase noise data off an HP 3048A

[Brooke Clarke]

Hi Matt:

There may be an answer at:
https://hpmemoryproject.org/technics/bench/3048/bench_3048_home.htm

-- 
Have Fun,

Brooke Clarke
https://www.PRC68.com
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.

-------- Original Message --------
> Hi,
>
> I have an HP 3048A that I'm running from an HP 382 controller. After
> performing a phase noise measurement, I'd like to be able to retrieve
> the data on another computer as a table of frequency offsets and phase
> noise values. What are my options for doing this?  Answers about how to
> get the plot also appreciated, but I'd really prefer the table of
> values.
>
> The HP 3048A can save results as RESU_x files, which appear to be binary
> files including the measurement results as well as a parameter
> summary. It can plot the graph to an external plotter too (or plotter
> emulator of course). I didn't see much else.
>
> So, one option would seem to be to figure out the format of the RESU_x
> files. That would be nice, as it would come with the parameter summary,
> as well as locations of the spurs. Has anyone investigated this?
>
> Another option would be to plot them to a plotter emulator (I don't have
> a physical plotter, and wouldn't want to plot and then scan anyway) and
> then use a tool like WebPlotDigitizer to extract the numeric
> data. That's a bit tedious and I don't currently have a GPIB controller
> I can use with Windows to do this. (Actually, I've been meaning to get
> one for some time, but am a bit reluctant as my last NI GPIB-USB-HS
> broke after just a handful of uses, whereas my E5810A is rock
> solid. Anyway, that's a separate topic...).
>
> Another option might be to use the PN3048 software - maybe it can do
> this. I haven't used that much since I have the 382. But, again, that
> requires (I think) a GPIB adapter I don't have at the moment.
>
> Or maybe HTBasic, but I don't have a license and the GPIB adapter still
> applies.
>
> Or, maybe I missed something really obvious in the 3048A manual and this
> is natively possible. But, I wouldn't be surprised if, when this
> software was written, it wasn't anticipated that someone would want this
> data in another form than as a physical hard-copy or graph on a 200/300
> series controller.
>
> Thanks
> Matt
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