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Siglent SPD3303D review
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Salas:
My SPD3303S developed an issue where the control knob wouldn't respond normally any more but jumped around the setting like crazy when stepped. Using PC software control all was still setting fine though. Jonas from Siglent.eu shop responded nicely and communicated with the factory. After I filled a fault description form they decided to send me through Jonas a new front face control board to replace. The whole thing was done not too slowly and was free of charge because the unit is under warranty.

Its not a quick job because it takes many disassembly steps that is why I postponed it for a while as the PSU was used to finish a project. Anyway I took it apart today and I exchanged the boards. I am happy to see that it now works correctly again. Thumbs up to Jonas and Siglent for that :-+

Given the opportunity I wonder if Siglent  has more time now to allocate into updating the S series firmware for 1V knob stepping too and not only 0.1V coarse or 0.001V fine? Its a serious drawback in manual operation for the S not having a 1V coarse also. Manual is the most frequent mode of use on a bench after all. It should be starting at 1V coarse then press fine to 0.1V or long press fine to 0.001V. Even better some combination of fine and arrow keys to select any digit from first to last.

Split screen set and out sections would be also nice like they did on the X after listening to our feedback here but lets not ask much. There is a large base of D/S series users and retro-fixing some ergonomic issue surely gives to a company a boost in customer loyalty. Its just a control fix in software, nothing too hard.
mimmus78:
I have a similar problem: if turn knob very fast voltage may jump 10V or even more volts (and burn what you are working for).

Don't know if is just a "chinese special feature" or a defect.

Anyone have noticed it?

Inviato dal mio Nexus 6P utilizzando Tapatalk

Salas:
It does not have a shuttle mode. I think that we simply prematurely wear out the rotary encoder because we can't select the 10V digit or its next 1V so we spin it a lot to go up and down the full 32V available. My Korad/Tenma budget supply can do it. Has a Voltage/Current shift button, then with the arrow buttons the flashing digit to be changing value with the rotary, changes. So the Siglent with immensely more powerful DSP could also do it if they planned so. But they likely thought USB control would be the primary way and the rotary for small adjustments. Wrongly thought out if so. Manual is the primary mode of operation on a bench.
FrankBuss:
I think in one of Dave's videos I've seen a power supply where you can set a maximum voltage limit (was it a Rigol?), and you can't accidentally go higher with the rotary encoder. This would be a useful feature for the Siglent as well. There is a lot of space on the display to implement such a feature.
tautech:

--- Quote from: FrankBuss on October 18, 2016, 01:00:14 pm ---I think in one of Dave's videos I've seen a power supply where you can set a maximum voltage limit (was it a Rigol?), and you can't accidentally go higher with the rotary encoder. This would be a useful feature for the Siglent as well. There is a lot of space on the display to implement such a feature.

--- End quote ---
As far as I can tell Frank, all the Siglent PSU's have a lock feature on the front panel in the form of a Lock softkey.
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