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

[Jim Muehlberg]

John - This is great news!

I cut my teeth on the 3048A and I have squirreled away all the pieces to 
it in our lab.  I've used the E5505A for the last 15 years and we 
recently purchased the N5511 from keysight.

I am back to the 3048A for nostalgia, and as it turns out, practical 
purposes.  The new project I'm on does not have allot of funding now.

I think our unit was from an air force cal lab as it came with all kinds 
of bits and pieces - precision adapters, splitters, strange bnc loads, 
and K21 AM detector filters, etc.

In ca 2000, it was really frustrating to only get out .png files using 
the "grafplus" software and I was not smart enough to figure any other way.

Funny, now the problem is getting files from 3.5" floppys to the 
network!  I think I can muddle through that though...

Jim

On 2023-04-12 2:22 AM, John Miles via time-nuts wrote:
>> -----Original Message-----
>> From: Matt Huszagh via time-nuts [mailto:time-nuts at lists.febo.com]
>> Sent: Tuesday, April 11, 2023 9:57 PM
>> ...
>> 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?
> TimeLab can import 3048A result files saved from the RMB version under
> HTBasic or the native PN3048 application, and then export the PN trace and
> spur data to a .CSV-style text file.
>
> It won't do you much good if you are planning to stick with the 382, though.
> But you could start with the import_3048A_data() function in timelab.cpp if
> you wanted to write your own importer.
>
> -- john
>
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-- 

Jim Muehlberg
Senior Engineer

National Radio Astronomy Observatory
ngVLA Local Oscillator Lead

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