Nice YouTube video Introduction to Spectrum Analyzers: http://snip.ly/769o9 from "Electronics + Radio" describing the basic functions of a dedicated benchtop spectrum analyzer. Using Rhode & Schwartz products, it is applicable to other brands too. Check out this video showing the key essentials about how to use a spectrum analyzer: controls, operation, examples . . . and some top tips from industry experts. The video starts by explaining the controls on the spectrum analyzer and then moves on to show how some of the basic measurements can be made. It also details other measurements like phase noise, using spectral masks and much more . . . All you need to know about how to use a spectrum analyzer. More details about how to use a spectrum analyzer and what the controls do can be found here: http://www.electronics-radio.com/articles/test-methods/spectrum-analyzer/how-to-use-spectrum-analyzer-operation.php
Jack Ganssle just did an excellent review of Siglent's SDS2304X, comparing it with Keysight’s MSO X 3054A, on Embedded.com
"The layout is eerily similar. Like the Keysight, all of the Chinese unit’s knobs can be pressed in to change some functionality. For instance, on both units pushing a vertical gain knob toggles the gain from the normal 1-2-5 sequence to a “variable” mode, where the gain is continuously adjustable. I don’t find it useful but perhaps it makes sense if one were using the unit for automated testing.
The Keysight’s knobs feel better, and the Siglent’s buttons have a little bit of a mushy feel rather than a sharp snap.
Other features are different – for instance the Keysight has twice the lower unit’s sample rate. It takes a wider range of probes.
But it is five times the price.
The Siglent’s user interface is almost identical to Keysight’s and is just as intuitive. It’s a very easy scope to operate. There are a lot of modes, though, and I found myself referring to the 200 page pretty decent manual (supplied as a PDF without clickable links in the table of contents) for the more obscure functions. The 800 x 480 eight-inch screen is very crisp and, unlike on their $359 model, I didn’t find myself wishing for more resolution. Sometimes a lot of information is displayed and the characters can be quite small. The layout is an odd 8 by 14 divisions which is not a problem; just don’t assume the usual 10 on the horizontal axis when measuring time.
One of the great things about digital scopes is the deep memory. With 140 Mpts there’s a lot of data captured. You can take a single slow sweep and then crank up the time base to see lots of detail about the signal.
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