@ Rob from Perth
Nice summary but what you aren't aware of is the time and effort behind the scenes that was taken to address the problems Nico was having, even by myself from the other side of the world.
I'm aware of your efforts and I'm grateful for them but ultimately they did not result in Siglent making any progress with the firmware development and getting the SDS2000 firmware in a usefull state. The firmware of December 2014 had the following issues:
- High resolution mode absent
- The averaged signal (thin trace) dissapears in 'stop mode' and gets replaced by a 'furry' non-averaged trace; not useful because it doesn't allow to freeze an averaged signal and do measurements with the cursors.
- Protocol decoding only decodes what is on screen. Zooming in on a stream of messages by changing the timebase doesn't work and the zoom function is disabled. This makes protocol decoding practically useless for looking at malformed 'bits' and/or zooming in on parts of a message.
- Protocol decoding doesn't work on digital channels. Having protocol decoding on digital channels was one of the reasons for me to buy the SDS2204 (someone from Siglent confirmed decoding would work on digital channels on EEVblog).
- FFT is not useful without post-processing like averaging to clean up the signal. Also 1024 points are not enough.
- The cursors work terrible in version 1.1.37.2 (they go through the sequence of x1, x2, x1+x2, y1, y2, y1+y2).
- No measurements while decoding
- No zoom for digital signals
- Peak-detect doesn't work in roll mode
- SCPI over LAN doesn't work which makes the LAN connection useless. I tried sending commands over the LAN but the oscilloscope doesn't respond to commands requesting waveform data.
- Sometimes the colors of the 4 analog channels all turn yellow. Changing modes eventually fixes that.
- CAN triggering on message ID not working
- Over all the functions are hard to combine like zoom & digital, zoom & protocol decoding, measurements & digital, measurements & decoding, etc.
That we couldn't get his DSO FW to a state that satisfied Nico at that time was disappointing and Siglent themselves acknowledged that with a partial refund.
Why he has continued to bag many Siglent products when great effort was taken in an attempt to rectify his issues......well, I'm not sure.
Sorry but I didn't get a partial refund! Just a key for the signal generator option which I accepted in order to increase the potential resale value (which it didn't; I couldn't even get half of what I paid for it!). Anyway I needed a working oscilloscope in Januari 2015 and it turned out the SDS2204 was not going to be in a useful state anytime soon at that moment so I had to buy a different oscilloscope to get my work done. It is simple as that. Worse, the SDS2204 wasn't even useful as a bring-to-customers scope either so I had to buy another scope for that purpose as well.
I have had extensive contact with Siglent trying to explain to them what the problems where and they told me they aim towards a 6 month release cycle for the firmware but it ended up taking about 16 months from December 2014 until now to get to a somewhat decent level assuming the firmware Siglent released a short while ago makes the SDS2000 (finally) deliver on it's specifications. All in all you can't really expect people to buy an oscilloscope and wait for about 20 months (August 2014 to April 2016) for it to have all the specified functions -more or less- working?
Again I really
really do appreciate your efforts to help me and Siglent should be really gratefull to have you as a dealer but there is no denying that Siglent put a product in the market which did not work according to the promised functions and they where not able to fix it within a reasonable timeframe.
edit: typo