Products > Test Equipment
Siglent SPD3303D review
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leonerd:

--- Quote from: Siglent America on October 28, 2015, 01:12:15 pm ---I don't have the international pricing handy, but only that for North America.

SPD3303C: $289
SPD3303D: $369
SPD3303S: $529

New SPD3303X: $539 ($10 more than the SPD3303S)
SPD3303X-E: $389 ($20 more than the SPD3303D).

--- End quote ---

Ah; I see. In that case, that looks a much more reasonable proposition - plus I see the specs on the X/X-E are a little better, as they seem to have higher accuracy voltage/current measurement. At an almost-unbelievably good 0.03% on voltage and 0.3% on current - are we quite sure this isn't a typo? ;)


--- Quote from: Siglent America on October 28, 2015, 01:12:15 pm ---And you are correct on why we changed the MPU, Leonerd.

With so many new products having just come out and more new ones coming soon then the Engineering manpower has to be considered, where to spend the Engineering resources. If enough customers with the D/S versions want the upgrade then we will certainly look at doing so.
--- End quote ---

I can certainly understand the idea of not spreading resources too thinly, and trying to keep a smaller range of different products. I was just concerned at the difference in cost for new features people may not want; but it seems from your US list prices the difference isn't so bad. Maybe the distributor I was quoting my prices from are just trying to shift some of the "older" model a lot cheaper, to get rid of them...
leonerd:

--- Quote from: leonerd on October 28, 2015, 12:59:41 pm ---
--- Quote from: Siglent America on October 28, 2015, 12:24:43 pm ---Because the new X-Series power supplies are only a few dollars more than the C/D/S models then then the D/S models will probably fade away. The LED version (C) is less expensive so I anticipate it will be around for a while. Of course, it doesn't hacve the larger LCD display so it cannot display as much information at once as the other models.

--- End quote ---

You say "a few dollars more" - I see on siglent.eu the D version for €299 vs the X-E at €370 - that's not "a few dollars", that's nearly a third more. For the 1mV version, the S costs €399 vs the X at a massive €509. That's quite the difference there.

--- End quote ---

I may retract that in fact; I was looking at just one supplier, who I think may have been selling off older stock cheaply. Looking at other places, I can find sellers offering the X-E for literally the same price as the D. E.g. in the UK

  http://www.tester.co.uk/process-and-industrial/industrial-test-equipment/ac-dc-power-supplies

has both for £269 currently.
FrankBuss:
Upgrading the D version firmware would be nice, because I have a SPD3303D. But it doesn't need to be all changes like for the X version with different GUI, if this is too much work to backport. Just a small change to somehow change the voltage in 0.1 V steps and I would be happy. Could be even a very small patch to adjust it in 0.1 V steps *instead* of 0.01 V steps, because so far I didn't need 0.01 V steps, but often 0.1 V steps, which the firmware programmer could do in a minute.
leonerd:

--- Quote from: FrankBuss on October 28, 2015, 03:21:58 pm ---Could be even a very small patch to adjust it in 0.1 V steps *instead* of 0.01 V steps, because so far I didn't need 0.01 V steps, but often 0.1 V steps, which the firmware programmer could do in a minute.

--- End quote ---

I don't think that would fly with most users ;) I for one would still like to access the full resolution of voltage setting that the hardware supports; I'd just like a quicker way to enter the numbers.
Salas:

--- Quote from: leonerd on October 28, 2015, 04:27:45 pm ---
--- Quote from: FrankBuss on October 28, 2015, 03:21:58 pm ---Could be even a very small patch to adjust it in 0.1 V steps *instead* of 0.01 V steps, because so far I didn't need 0.01 V steps, but often 0.1 V steps, which the firmware programmer could do in a minute.

--- End quote ---

I don't think that would fly with most users ;) I for one would still like to access the full resolution of voltage setting that the hardware supports; I'd just like a quicker way to enter the numbers.

--- End quote ---

I have the S model and yes I agree, a way to shift through all the digits with the knob is the best approach. Siglent not planing to give the older SPD series any further software upgrade is a big disappointment. Those are recently bought expensive enough units. At least the all digits can shift to set issue must be addressed.

By the way, in my S there is always a 2mA residual measured and displayed without anything connected in all modes except in the parallel mode. Along with the resultant power displayed. It keeps on adding when more current is drawn by some load, its not just a ghost before connecting. Do you guys have that thing in your units? Or some annoying green red light cycling and relay clicking on CH2 when having PARA pressed and the outputs activated before connecting a load?

Also the rotary started shuttling the setting with no tactile feel as to why or in any steady pattern. Almost burned an expensive circuit I was testing when I tried to go from 14V to 15V and it flown to 19V with just one click to the right. Saved it being quick on the off button. Going higher instead of lower when turning to the left sometimes even. I think I remember no shuttle mode or it was more disciplined a few months ago when I bought it. Some more accurate following of the rotary movement must be addressed. Else its dangerous to try step it live. At least in mine.
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