Opinions: SignalHound Spectrum Analyzer

[John Emerson]

I am interested in an affordable spectrum analyzer for ambient free
space (not near field) measurments up to 4GHz.

Can anyone offer an informed opinion on this product, with regard to
specs and capabilites?

For example, compared to all-in-one portable instruments such as those
offered by Anritsu..

http://www.signalhound.com/

What antenna would be suitable for the above application?

John Emerson

 

[Martin Riddle]

I am interested in an affordable spectrum analyzer for ambient free
space (not near field) measurments up to 4GHz.

Can anyone offer an informed opinion on this product, with regard to
specs and capabilites?

For example, compared to all-in-one portable instruments such as those
offered by Anritsu..

http://www.signalhound.com/

What antenna would be suitable for the above application?

John Emerson

I had looked into this. They have an API (write your own code) to create
custom sweeps.
You need 300khzRBW for EMC so it would probably work at their 250khz RBW
Then you need to apply the Cable and Antenna calibrations and see if
your under the CISPR limits.

I think its doable, for a quick pre-scan to find the trouble points, fix
and send the UUT to the real lab.
But lack of a Quasi-peak detector may hinder its usefulness when it
comes to splitting hairs
<http://cp.literature.agilent.com/litweb/pdf/5968-3661E.pdf.


You'd probably spend more on an Antenna.

You might want to look at the TEK 2712, they used to bundle it with an
preselector, LISN and antenna.
27120 EMI Measurement System

A good link
<http://www.evaluationengineering.co...-emirfi-test-equipment-purchase-a-winner.html>

Cheers