Electronics > Beginners
Is the Rigol DS1054Z still the best entry level digital scope for the price?
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ebastler:

--- Quote from: rstofer on May 01, 2017, 03:07:11 pm ---I LIKE the UI response!

--- End quote ---

Could you point me to a time in the video where he adjusts the vertical and/or horizontal offset, ideally while multiple traces are visible on the screen? I fast-forwarded through the videos (find them a bit tedious to watch, to be honest), and did not come across any operation that would be taxing for the UI. Thanks!
james_s:

--- Quote from: daveyk on May 01, 2017, 12:53:37 am ---
Yea, but 1ghz sample rate is not good for 200MHz BW is it? I would think them minimum sample rate is 1GHz for every 100MHz in BW and then I'm told that is marginal is trying to monitor fast risetime signals?

Dave

--- End quote ---

Sure it is, most waveforms are repetitive in nature, so a DSO simply assembles the waveform by sampling multiple cycles, it works pretty well. My 1GHz bandwidth scope has a max sample rate of 4 GS/sec and it has no trouble displaying waveforms up near the bandwidth limit. The only time you really need max capture rate is for single shot transient events.
rstofer:
I was watching the SPI decoding part and it seems Siglent didn't take advantage of using the Ext trigger for CS'.  I want to read the manual before saying anything about using 'holdoff' to find the first transition of the packet.  In the video, the channels are MOSI and Clk.

Since CS' frames the packet, it is a pretty important signal.

Overall, the decoding feature seems pretty nice.  I like the table display.


radcom123:
I watched both of the reviews as well and also didn't get why you can't use the ext trigger for the CS but I do like the idea of the display table, but that in its self isn't really enough to go for it over the rigol. The biggest draw for me for the sig over the rigol is the 200Mhz bandwidth but I don't know how useful that extra bandwidth will be to me as I'm not looking at doing any RF stuff, and my gut feeling is the ability to see more at the same time with the extra 2 channels is going to be more useful to me than the higher bandwidth but I don't know enough about scopes to fully understand the implications about the bandwidth.
james_s:
Bandwidth largely determines the max rise time you can accurately display. 100MHz is probably enough for most stuff but it never hurts to have more bandwidth. I got by with a 100MHz analog scope for many years, but now that I have a newer high bandwidth scope I wonder how I got by without it. Still, for entry level 100MHz is probably enough. You can still look at somewhat faster signals than that, you just have to understand how the limited bandwidth affects what you see.
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