Products > Test Equipment
Where will Oscilloscopes and DMM's be in 10yrs ?
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tautech:

--- Quote from: 2N3055 on October 26, 2022, 01:21:53 pm ---
--- Quote from: pcprogrammer on October 26, 2022, 01:10:38 pm ---The two channel is cheaper :)

--- End quote ---

I don't think anybody should buy 2 ch scope anymore.. You cannot even look at the SPI bus signals without it..
Especially that price difference is not that great.

--- End quote ---
You can but not both MOSI and MISO together.
One channel must be on the clock and instead of connecting another to CS as you don't have a spare channel you use a Clk Timeout to emulate CS.

These features are in the Siglent DSO's you have.
coppice:

--- Quote from: 2N3055 on October 26, 2022, 01:21:53 pm ---
--- Quote from: pcprogrammer on October 26, 2022, 01:10:38 pm ---The two channel is cheaper :)

--- End quote ---

I don't think anybody should buy 2 ch scope anymore.. You cannot even look at the SPI bus signals without it..
Especially that price difference is not that great.

--- End quote ---
I can't remember the last time I used a scope with more than 2 probes plugged in. If I want to look at an SPI bus its usually for something specific. A clock channel and the one data line I am interested in is usually enough, and avoids me having to bother hooking up more test points. If a 4 channel scope is a low premium over a 2 channel one you might as well get the 4 channel model, but I wouldn't pay a high premium for the extra channels.

2N3055:

--- Quote from: tautech on October 26, 2022, 06:57:58 pm ---
--- Quote from: 2N3055 on October 26, 2022, 01:21:53 pm ---
--- Quote from: pcprogrammer on October 26, 2022, 01:10:38 pm ---The two channel is cheaper :)

--- End quote ---

I don't think anybody should buy 2 ch scope anymore.. You cannot even look at the SPI bus signals without it..
Especially that price difference is not that great.

--- End quote ---
You can but not both MOSI and MISO together.
One channel must be on the clock and instead of connecting another to CS as you don't have a spare channel you use a Clk Timeout to emulate CS.

These features are in the Siglent DSO's you have.

--- End quote ---

Let me clarify what I meant. I wasn't talking about decoding. For decoding single direction data you are absolutely right.
But what  I was referring to was seeing full SPI data (CLK, CS, MOSI, MISO) on analog level (and decoding if need be).
Many times we need to measure both question and response and general timing for all 4 SPI lines. To basically be able to compare to timing diagrams in datasheet.  Also (and this is when MSO comes in handy), for instance on AD/DA converters to correlate digital and analog data...
To paraphrase TopGear, MOAR CHANNELS!!

Joking on the side, there are many people out there whose needs are perfectly well served with 2ch scopes..
That is why I said "I wouldn't buy". Emphasis on my opinion based on my type of work.
tautech:

--- Quote from: 2N3055 on October 26, 2022, 07:20:07 pm ---
--- Quote from: tautech on October 26, 2022, 06:57:58 pm ---
--- Quote from: 2N3055 on October 26, 2022, 01:21:53 pm ---
--- Quote from: pcprogrammer on October 26, 2022, 01:10:38 pm ---The two channel is cheaper :)

--- End quote ---

I don't think anybody should buy 2 ch scope anymore.. You cannot even look at the SPI bus signals without it..
Especially that price difference is not that great.

--- End quote ---
You can but not both MOSI and MISO together.
One channel must be on the clock and instead of connecting another to CS as you don't have a spare channel you use a Clk Timeout to emulate CS.

These features are in the Siglent DSO's you have.

--- End quote ---

Let me clarify what I meant.

--- End quote ---
;D I know exactly what you meant.  ;)
2N3055:

--- Quote from: coppice on October 26, 2022, 07:14:25 pm ---
--- Quote from: 2N3055 on October 26, 2022, 01:21:53 pm ---
--- Quote from: pcprogrammer on October 26, 2022, 01:10:38 pm ---The two channel is cheaper :)

--- End quote ---

I don't think anybody should buy 2 ch scope anymore.. You cannot even look at the SPI bus signals without it..
Especially that price difference is not that great.

--- End quote ---
I can't remember the last time I used a scope with more than 2 probes plugged in. If I want to look at an SPI bus its usually for something specific. A clock channel and the one data line I am interested in is usually enough, and avoids me having to bother hooking up more test points. If a 4 channel scope is a low premium over a 2 channel one you might as well get the 4 channel model, but I wouldn't pay a high premium for the extra channels.

--- End quote ---

That's fine, we all do different things different way. Each person chose their priorities.  My point is that 2 ch scope with 2 probes is 700€ (no tax) and 4ch scope with 4 probes  is 999€ (no tax). Difference is not peanuts but in percentage it is not so great. That is for new Rigol HDO1000. In meantime Rigol MS5000 is cheaper in basic 4 ch version then in 2ch. Go figure..
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