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Rigol DS1054Z rotary encoder mod *works!*

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tv84:

--- Quote from: ebastler on January 18, 2020, 07:45:33 pm ---Hmm, my (old) DS1054Z is still at 04.04.04.02. Unless Rigol changed the way their firmware update works, you can't go back to an older firmware version unfortunately.

--- End quote ---

Sure you can!  That is very old news -> Here

klausES:
It seems to be a problem that the Alps encoder E12 "E" series stops with its rest position on the flank.
If you carefully outsmart the detent by hand, i.e. stop at the tip of a detent, then it would work.

I'm also not satisfied with the quality of this Alps type.
The detent is too hard, in particular for a small button diameter.
The feeling when turning is inferior, as is the feeling when pressing the button.
No comparison to the encoders that Rigol has now installed (at least to mine in the newer generation of the keyboard / encoder board).
They run smoothly with little play and a good pressure point.

Looking for a higher quality encoder. Preferably one of the two who rigol uses on timebase and volt / div with detent.  8)
So far I have not found the original ones.
Rigol will certainly not build it itself, but buy it somewhere in China...

ebastler:

--- Quote from: klausES on January 19, 2020, 01:46:08 pm ---It seems to be a problem that the Alps encoder E12 "E" series stops with its rest position on the flank.
If you carefully outsmart the detent by hand, i.e. stop at the tip of a detent, then it would work.

I'm also not satisfied with the quality of this Alps type. [..]
Looking for a higher quality encoder. [..]

--- End quote ---

Regarding the functionality problem you experience, it remains a fact that the same type of encoder has been used successfully by many others. (Including myself; mine is a "STEC08" from Reichelt.) You could go back to the .02 firmware to verify whether a change in .03 has caused the problem; see tv84's hints on "downgrading" the firmware. Or you could try swapping the quadrant signals to see whether there was a change in the board layout which now makes the wrong signal critical in the detent position.

Regarding the different feel, I doubt that you will be able to identify the exact encoder type used by Rigol. (And if you did, you would have to be quite lucky to find a source for single quantities.) Alps and Bourns are the two major Western brands for encoders, I believe, and are widely available from the usual distributors. You can get types with a metal shaft instead of plastic, which may (or may not) be better quality. 

But don't make this an endless search for perfection; it's about using the scope after all!

klausES:
Tried another Bourns encoder today (PEC12R-4220F-S0024).
Its latching is not on an edge (datasheet and measured in real terms).

The same behavior can be seen as with the Alps.
There are 2 steps in the menus etc. between two screenings.  |O
As with the Alps, speed also plays no role in this behavior.

The Bourns can be handled better because it does not have the pointy grid as the Alps, but none of this was planned.

What else did they change with the newer board besides smd?
Actually impossible illogical because these two encoders (apart from standing on the flank at the Alps, the Bourns doesn't do this),
if you think away the purely mechanical screening, do nothing else than the original encoder.

At the moment I can't think of anything else.
Why is this happening?

... except converting the original encoder to a grid.
I've already started ...

Another warning:
When unsoldering the Alps (i.e. the 2nd unsoldering process on this board at the point), four of the five soldering pads said goodbye.
And i am experienced for smd soldering ...
The board looks really nice, but it seems very sensitive here.

TurboTom:
Could the Actel ProAsic that's sitting on the front panel board and that's probably doing the low-level interfacing of the individuals switches / encoders to the SoC, be configured differently on the new models? This means, the configuration of this "small FPGA" isn't changed during a firmware update. That would be quite a bummer since now, the "easy" encoder replacement isn't an option anymore (even more so due to the new SMD installation of the encoders).
But it should be possible to find a suitable, detented encoder with a single phase change between two detents, after all.

This encoder in the 9pulse / 18detent version may do the trick -- difficulty will be obtaining it in small quantities.

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