If you are taking  relative measurements of a single spur then this device 
might work just fine...

>From your message it sounds like you are off measuring a radio ...?


-----Original Message-----
From: Ken Javor [mailto:ken.ja...@emccompliance.com] 
Sent: Monday, September 19, 2016 7:42 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] USB spectrum analyser

Based on the limited info you provide, perhaps some on this forum automatically 
know the level of rf you need to measure as well as the desired frequency 
accuracy.  Not me.

Any spectrum analyzer can measure any level, with appropriate internal/external 
attenuation and/or pre-amplification.

They don't specify frequency accuracy, but the minimum available BW is 50 kHz, 
which forms a lower bound on that number. Also the 5 ppm stat on the local 
oscillator is 12 kHz at 2.4 GHz, and 36 kHz at the third harmonic.
Those will likely rss with 50 kHz uncertainty.  Again, don't know what your 
frequency accuracy need is, but most specs use 1 MHz BW at these frequencies 
for EMI work.

Ken Javor
Phone: (256) 650-5261


> From: Amund Westin <am...@westin-emission.no>
> Reply-To: Amund Westin <am...@westin-emission.no>
> Date: Mon, 19 Sep 2016 11:49:30 +0200
> To: <EMC-PSTC@LISTSERV.IEEE.ORG>
> Subject: [PSES] USB spectrum analyser
> 
> Going to measure in the frequency range 2.4GHz.
> Will this USB spectrum do the job? Any experience about this unit?
> http://triarchytech.com/product8G.html
> 
> Measure output RF level at 2.4GHz and 3rd harmonic is important.
> Frequency accuracy aswell.
> 
> Thanks!
> 
> Best regards
> Amund
> 
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Attachments are not permitted but the IEEE PSES Online Communities site at 
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