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WLAN RF TEST - RF Cafe Forums
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Post subject: WLAN RF TEST
Posted: Sat Apr 11, 2009 11:42 am
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Joined: Wed Apr 08, 2009
11:07 am
Posts: 37 |
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Hase anyone found a relatively cheap way to make
WLAN RF measurements (802.11 a/b/g). I need to measure
EVM, clipping, phase errors, phase noise, etc. There
seem to be a lot of $70K solutions out there. Anything
worthwhile in the $5 K range.
It would also
be nice if it could do other measurements, such
as data demod for FSK and DSSS ISM band links.
I do have a TEK MSO4104 and was wondering if
I could downconver into it, and interface it to
Matlab and do the RF measurements?
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LM317 |
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Post subject: Re: WLAN RF TEST
Posted: Tue Apr 14, 2009 11:49 am
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Joined: Tue May 20, 2008
8:13 pm
Posts: 8 |
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If you're looking to do meaningful measurements,
then really nothing short of a communications analyzer
will do the job. Trying to sample with MS4104 will
probaly introduce errors because it is impossible
to discern how successful your downconversion is
(introduction of intermods and other nonlinearities).
Have you looked into renting a piece of TE from
a place like Test Equipment Connection, Alliance
Test Equipment, etc. (there are a lot of companies
listed on this website)? For a couple grand, you
can get one for a month.
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biff44 |
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Post subject: Re: WLAN RF TEST
Posted: Tue Apr 14, 2009 1:03 pm
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Joined: Wed Apr 08, 2009
11:07 am
Posts: 37 |
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I am looking at used test equipment. My concern
is that things change SOOOO fast nowadays, and communications
gear software becomes obsolete and non-supported
in a wink of an eye. I was wondering if the best
way was to 1)get a dedicated piece of gear, like
a VSA, and make sure it is current enough to still
be supported, and add the measurement personalities
as needed, or 2)i/Q downconvert the signal myself,
and import it into Matlab or NILabview, and do the
processing there.
I am a consultant, and
therefore need low cost but also the flexibility
to work with anything a customer throws at me. For
instance, if I had a dedicated VSA, and I got a
number of LTE test jobs, I would have some trouble
upgrading unless the VSA was one of the latest models.
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Posted 11/12/2012
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