Rigol have responded saying that they have their development team working on a firmware update to solve the issues mentioned in the video as soon as possible. Once the new fw is available, I'll do a follow-up video.

The autoranging bug is a lack of proper, systematic testing at Rigol.....and the lack of "what if" testing that I see sooooo many companies seem to forget about. Net result, robustness of software design is lacking. Hopefully they will fix soon.......it's a dangerous bug!

@revealingfacts4all

12 күн бұрын

Exactly and the rebooting DP832 was another one of their lack of engineering you won't find with more reputable brands. I'm done buying and recommending RIGOL....

That measurement display is awful. They're obviously trying to make it look like a fixed-display LCD or VFD, but the implementation looks very bad. Their use of a proportionally spaced font (impossible on a true fixed LCD or VFD) makes the digits jitter back and forth as the numbers change or when the minus sign comes and goes. At 14:10 the changing least significant digits made the whole measurement display jitter vertically by one or two pixels. They should change to solid digits, use a fixed-space font, right justify the measurement and fix the vertical jitter. The bar graph and data logging issues point to a problem in Rigol's design center, and this is where the Chinese manufacturers really differ from western companies. Their product designers and engineers know how to make an instrument that takes measurements, but they don't really understand how it's used by customers. A bar graph on a voltmeter can be a useful tool, but only if it's implemented properly; otherwise it's just a bullet point in the sales brochure. Likewise, data logging is very useful but only if it records time-correlated information. Rigol's implementation is utterly useless. Fortunately, the meter's problems could be fixed with firmware updates, but will Rigol actually do anything about them?

@voltlog

15 күн бұрын

I've sent a suggestion to Rigol to include an option to select a different solid font. Let's see how they respond to that.

@IanScottJohnston

14 күн бұрын

@@voltloghave sent suggestions to my contact also.

@jaro6985

9 күн бұрын

Yeah I also submitted a font request a while ago. In their code its really simple to change it, LVGL, though they'd have to do a bit of work to add options you can select (not that anyone wants this terrible cracked font anyway). How this made it through user testing is insane.

Don't like the digit font. Can you change it ?

@voltlog

15 күн бұрын

Not right now. I've sent a suggestion to Rigol to include an option to select a different solid font. Let's see how they respond to that.

If the DM858 multimeter doesn't have a setting option to swap that simulated VFD font with a normal solid font, the DM858 comes across as a gimmick product for customers who are more interested in form over function. That simulated VFD font adds no value, it only subtracts value.

@voltlog

15 күн бұрын

I've sent a suggestion to Rigol to include an option to select a different solid font. Let's see how they respond to that.

What an ugly font. Why are there all those black stripes within the large yellow numbers? Can you select a solid font as well? The auto-center of the display is annoying when the voltage switches between + and -.

@AttilaAsztalos

16 күн бұрын

Sigh... those line presumably try to emulate the look of a faux-segment-LCD display that would have to cut up the number along all those lines into sub-segments in order to display each number by "lighting" a subset of them. I hate it too...

@NiHaoMike64

15 күн бұрын

Trying to replicate the look of a really ancient Nixie tube multimeter. Makes about as much sense as a MP3 player that tries to replicate the sound of a cheap record player from the 60s.

@voltlog

15 күн бұрын

I've sent a suggestion to Rigol to include an option to select a different solid font. Let's see how they respond to that.

@enginerdy

14 күн бұрын

@@NiHaoMike64needs some plastic “wood” side panels tbh

That font, just... why?! I also love that the numbers are huge but those lines. Form factor is interesting but if I was in the market that would 100% put me off that model. They used a similar font on the DP900 series power supplies as well. Rigol stop trying to be fancy! Don't try to make this your "thing" like the goofy shaped buttons on some of your other gear.

@voltlog

15 күн бұрын

I've sent a suggestion to Rigol to include an option to select a different solid font. Let's see how they respond to that.

@enginerdy

14 күн бұрын

We finally have the ability to produce displays that practically look like print on paper, why not pretend like we’re still stuck with VFDs?

A little disappointing from Rigol. I'd expect the QC to better. Seems manufacturers just send out buggy products to get them on the shelf and fix it in post later. Maybe... I use Agilent 34401A meters. Because I can TRUST them, not for their features.

@voltlog

15 күн бұрын

Well.. some users because of their setup/workflow can use an older meter just fine, Others that need the modern features, increased productivity like myself, will prefer a newer meter.

@TheGrantourismo

14 күн бұрын

@@voltlog This Rigol doesnt seem to be the meter, it looks to be a toy. Horrible specs, especially considering the price.

@enginerdy

14 күн бұрын

I mean, a meter is a meter for the most part, as long as it has the specs

I think I would have to try one of these out first to see if the form factor works for me…….am always open to something new. For my KZread videos it could work for me......large text (font sucks though), not so easy to topple over, touchscreen, Webview DMM, no batteries....hmmm!

Thanks for this very interressing video. I'm waiting fot the teardown !

@voltlog

15 күн бұрын

Coming soon!

I think the vesa mounts are awesome, certainly can free up a lot more space on the bench.

@voltlog

15 күн бұрын

Yep, certainly a good addition that can help.

Are those banana sockets the standard 3/4” ~19mm spacing apart?

@voltlog

15 күн бұрын

Yep, as shown in the video.

@TheDefpom

15 күн бұрын

@@voltlog must of missed that bit, was skipping some bits as I was short of time.

I was going to get one of these for my bench to sit alongside my DHO914 on a vesa mount, however after watching a few reviews including this one, the broken autoranging from factory and the sub-par zero timestamp data-logging put me off, additionally the main metering font is horrible - keep it simple, it's a meter not a billboard, there are also some UI elements that are simply confusing to work with and as you showed unhelpful error messages. Nobody is going to spend €340-440 on a DMM that has one of its main features completely broken from the factory, they have already put out firmware updates and have not fixed the autoranging which suggests to me that it is more likely to be a hardware bug than a software issue, i.e. unfixable. They need to revise this model's many issues, fix all of the problems and produce a new model/series where everything works out of the box and provide a product option in black like the DHO900 series so those of us who own DHO900's could have a matching DMM.

@voltlog

15 күн бұрын

I have compiled a list with the things I think could be improved/fixed in this meter and sent it to Rigol. We'll see how they respond. On the suggestion of having a black Rigol DMM, I'm thinking they are probably working on that and will be a higher spec model that will have a black finish.

@Uro666

15 күн бұрын

@@voltlog I appreciate that you are giving them feedback on these issues, hopefully they will respond and/or release updates with all of these issues fixed, if it is a hardware issue causing the autoranging to return invalid readings then I'd expect them to create a new model/sku in respect of any hardware/design changes in order to differentiate the models properly. If they are working on a black DMM with an improved feature set and none of these issues [which should have never passed QA] then that would be something to look out for. :)

at 19:40, on the right is a uamp current source. What is the make/model? Thanks! Great video. A personally do like the device's form factor (foot print).

@voltlog

15 күн бұрын

More info about that current source in this video kzread.info/dash/bejne/hadmtdqMn5PNYNY.html&ab_channel=VoltLog

Thank you, but at this price point, I still prefer the old and reliable 34401A.

@voltlog

15 күн бұрын

I was under the same feeling until I started using these modern meters for my everyday measurements/tasks. When you start seeing how they make your life easier by increasing your productivity you start moving away from the old ones. But this obviously depends on user preference and on how often you use such a multimeter and how your workbench and workflow looks like.

İs there any real benefit to use over classic multimeter like uniT?

I'd probably spend that money on a well maintained and serviced Agilent 34401a.

Which hardware version is this?

The autoranging falsely indicating a very low voltage when there's a high voltage present is a recall worth bug. It looks like it may be the weirdness that happens with some opamps when the input voltage gets too close or beyond the supply rails, or it might be some arithmetic bug.

@voltlog

15 күн бұрын

At this point it is unclear if it can be fixed through a fw update. I've sent them my findings, I'll wait and see how they respond.

good job sir

I wish more multimeters had "fast" sampling. Some of the old HP ones could take 10k readings per second, which could be streamed over USB.

@AttilaAsztalos

16 күн бұрын

It basically depends on the measuring principle the meter is based on. If you use a classic ADC, you basically have an oscilloscope and can be as fast as you want (within reason) but you won't be particularly precise. If you use dual slope capacitor charging-discharging you can be as precise as you want but you will not be doing 10k readings.

@kuro68000

16 күн бұрын

@@AttilaAsztalos the old HP 6.5 digit ones were 10k measurements/sec, although I think it was down to 5.5 digits at that speed.

@AttilaAsztalos

16 күн бұрын

@@kuro68000 Were they using dual slope ADC though...?

@kuro68000

15 күн бұрын

@@AttilaAsztalos I don't know, it was a great meter though

@NiHaoMike64

15 күн бұрын

@@AttilaAsztalos Nowadays, Delta Sigma ADCs are popular for high precision at low to moderate sample rates.

Really don’t like the form factor, shelf and bench space is a premium, the smaller the vertical and horizontal footprint the better.

@voltlog

15 күн бұрын

Thanks for your feedback.

That font is awful for the number readout. Also don’t like the artificial yellow glow on the screen reducing the contrast.

That font is awful for the number readout. Also don’t like the artificial yellow glow on the screen reducing the contrast. Don’t like diode mode as a 2nd function, use that way more than capacitance mode. They should be swapped.

.. the real question is; can you flash a DM858E to become a DM858?

@voltlog

15 күн бұрын

No, unfortunately you can't..

Rigol won with new DHO scopes but lost with DMMs.

@voltlog

15 күн бұрын

It's not all lost if they improve the firmware.

Mono space font to display main value? No - they are not aware of that! Are they kidding to show jumping float point and the comma? Shame !

@voltlog

15 күн бұрын

I have sent them a suggestion to implement selection of a fixed spacing solid font. Let's see if they follow-up with a firmware update to include that feature.

20:30 - 20:45 The fidgeting is disturbing.

Multimeter that is not multimetering :-) Also why readings are jumping up and down (physical digits move by one or few pixels).

Interesting unit, but it looks like they have a ways to go with it.........JRH

@voltlog

15 күн бұрын

I have compiled a list with the things I think could be improved/fixed in this meter and sent it to Rigol. We'll see how they respond.

This is a very weird meter. Banana jacks are 'sideways' compared to any other bench multimeter. The autorange bug is just unforgivable. As mentioned before, but this is taste-sensitive, the font ugly and for a 5.5 digit meter it's strange it is 'only' 120.000 counts. Form factor is scope-like but on a bench with a more or less fixed set-up this would take up more space than a traditional model. I don't know what Rigol wants with this contraption to be honest.

Una delusione assoluta, non è un prodotto degno di Rigol onestamente, boot time scandaloso e tante altre caratteristiche non all'altezza di questo marchio, saluti

More in the mail and interesting projects, less "paid promotions" please.

Dude you can send it to me.

Yeesh, I can’t stand those fonts, that alone would keep me from buying it 🤮

Absolutely don't like the Graphics over the Digits....