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- Опубліковано 15 жов 2024
- Dave gives his initial impression on the Rigol DP832 triple output 195W lab power supply.
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I can't stand products that are crippled by software and you have to pay for an unlock code. I fully understand the reasons and if I were in charge of making those decisions I'm sure my hand would be forced by the market as well, but I still hate that shit.
You can still use it as in the old days, never di software upgrades. For example in this case, when you're ready for more accuracy, sell your DP832 to someone and purchase the DP832A which has the higher accuracy. Why does it bother you if others choose to upgrade their existing supply via incremental upgrade cost instead of going through the hassle of selling current model and buying a better one? Would it make you feel better if the upgrade was 3x the price and required you to send in the unit, then someone at the factory applies the update and puts a different sticker on it?
It does make sense in some ways for the manufacturer. They only need to produce one type of device for this range and specify the option tiers by software. It might cost more on a per unit basis with the aditional hardware but only a few bucks, but it cuts down on costs not to have 5 production lines when you can do this.
That being said, I do not like it when companies ask such extreme prices for this.
Like I said, the hardware options add a few bucks to the cost but then they charge you >90 dollar to change a "enabled=false" to "enabled=true"... All the code is already in there. It is not like you are paying for a new OS or something...
But hey, maybe there is a opensource firmware out there for these with all options + more unlocked
It does make sense in some ways for the manufacturer. They only need to produce one type of device for this range and specify the option tiers by software. It might cost more on a per unit basis with the aditional hardware but only a few bucks, but it cuts down on costs not to have 5 production lines when you can do this.
That being said, I do not like it when companies ask such extreme prices for this.
Like I said, the hardware options add a few bucks to the cost but then they charge you >90 dollar to change a "enabled=false" to "enabled=true"... All the code is already in there. It is not like you are paying for a new OS or something...
But hey, maybe there is a opensource firmware out there for these with all options + more unlocked
Aye !
@@adamkaiser1389 im pretty sure its the same hardware, you can just hack it to the A version!
No preference, the Rigol simply lives on the teardown bench where I shoot most of my stuff, so it's just more handy to use it. The Agilent lives on my "working" bench up on the rack.
RIGOL official suppliers: link Dave's review.
Dave: "Look at that wanky keypad"
Haha
You know it turns out this product is exactly the same hardware as their fancier DP832A power supply, which is like twice the price. It looks like they were trying to pass this one off as having a monochrome screen with just a backlight that you can change the color of, to disguise that and make it look like a much lesser model. But they slipped up in at least a couple places. Like the UI where you can select the color scheme shows all the available colors at once to select from, and the "custom GUI" option also has multiple colors displayed at once.
You bang on about how crap everything about it is, then at the end you say GO BUY IT NOW IT's AMAZING! All the videos you've done say it's shit, it breaks it's not accurate, it over heats, you think the buttons are 'wanky'. Is that just typical Aussie impression? Try and slate it but it's actually pretty good.
Thanks for the review Dave, just purchased this power supply.
Is it good? Hackable? Can you increase the output over fabric settings?
MegaNitrospeed So far it's been a great addition to my arsenal. I haven't really messed with hacking or increasing output as it does exactly what I need out of the box.
Greg Agnew So its worth the 400-500€?
MegaNitrospeed Listen, if you need an accurate ps with these features, yes.
Thanks for the video Dave. You're the reason I'm buying it. I was stuck looking at $1000 tektronics and Agilent single output supplies.
I just got my first job after graduating as an BS biomedical/EE and I'm looking to upgrade my home lab a bit lol.
Looks like the rubber bumpers on the front don't extend past the binding posts, that's not great for the portability aspect. I treat my kit with care but sometimes a little extra insurance is needed.
I don't mind the button for the various display modes. - As you say yourself Dave, the small digits are hard to read from a distance. The round meters are readable more than 5 meters away.
Pretty darn thorough for a first impression! Much appreciated.
I agree on using a scope standing vertically on the floor. Way less magnetic influences from surrounding gear on the bench. I noticed even a magnetic screwdriver lying around on a bench can influence the trace.
I looked on their site, and a 832 with all the extras is about $90 or so more than the 832A.
So they're definitely aiming for the 832 to be an 832A where you choose to leave out a few of the options for a lower price. It seems like the hardware is basically equivalent.
first impressions, video is 43 mins long
I am not going to say that Dave waffles on - because at least he is passionate about what he does. Good job Dave!
One thing tho, and I am not an electronics tech, you compare a Rigol with Agilent, and Agilent DMM - how do you know which one of your precision instruments is most correct??
It would be nice to test out the remote control over LAN or rs233.
Maybe later u can do a video on the language and give an example of how to remote control? Not using NI software but by terminal? I would find that very useful. Thanks again
I do NOT get paid for reviews. Yes, Agilent gave me that 34461A to use in the lab. No, that did not influence my review. I have clearly demonstrated this time and time again. If you can't see and understand that from all of my video history, then I don't know why you bother watching. My reputation has been built on telling it like it is. Remember the 3000X scope which I didn't pay for either. Remember how I showed it BLOWING UP on their big launch day? My how people have selective memories...
You can see when he is choosing the color theme, it displays multiple colors at once.
Thanks for showing the features of this PSU, Dave, very helpful.
That's the way I looked at it. I never would have paid $700+ for the 832A, but was happy to pay the $400+option for the 832. YMMV.
Presumably you can use the Over-X protection when running in constant Y, so if in constant voltage you can say "Shut this down if I hit 1A" and if you're in constant current you can say "Shut this down if I'm putting more than 10V across this to try to achieve the current".
Yes, good point. A guard on the rocker would be nice.
No, check out the "Theme" options in the "Display" menu. Different colors on the screen -> Not a monochrome matrix.
Definitely a color LCD, you can see it showing multiple colors at the same time on the display screen. You can do a monochrome with rgb backlight but that wouldn't be able to show multiple colors at once. Why they didn't actually use the color LCD for the GUI doesn't make any sense, at least make the Rigol logo yellow like their other products!
please do a tear down Dave. i am sure a lot of people would be interested to know what makes this tick.
I will have to check if it does that when powered on from the back vs the front switch... The front switch was something that could be disabled...
You probably already figured it out, but the reason you're seeing 0.001A when nothing is connected, is because you need to manually calibrate the thing. The same thing happened to yours that happened to mine. As soon as you ran it through some paces, the calibration went off. You already had CH2 showing .001 when you unboxed it, and CH1 started doing that after you hooked up the big load!
I have a 5 digit meter that's just barely adequate for calibrating this, but I managed to get CH1 of mine to within +/- .002 volts throughout the range; at many points it is dead-on. I had to run through the calibration a dozen or more times before I was satisfied. If you have an expensive bench meter (I used a $250 Chinese handheld DMM), you can probably get it right on the first try.
I love this power supply. It's gadget heaven, and a great power supply to boot! I have a 100W 1 ohm resistor I could try the 30V 3A test on, but I'm afraid to go that high. :) Looks like yours wasn't keeping up. ...or maybe you had a limit set elsewhere on the device?
I just bought a DP711 and my volts are of 18-24 mV. I was told it can't be calibrated and it's with in error. Yet I paid $60 to get the 3rd decimal and from the sound of things the 2nd and 3rd are not accurate. Do you know something they don't? How do you calibrate it?
Dave your honesty is awesome! and I couldn't care less if someone gave you the product or you bought it on your own, I know your opinion is straight up honest keep it up!
Dave , how does it react to connecting accu's ? what if your accu is 12V and you set the powersupply to 10V and 1Amp current limit .Does it discharge the battery till 10V ? Or is it only sourcing current ? (My R&S NGMO2 does sink/source.)
The alternative is to enable everything and charge more for the unit to pay for all the R&D for the extra features. The truth is that the hardware doesn't really cost much so it saves money (for everyone) to just put it in to start with then let the people who WANT the extra features pay for the R&D.
I just bought a Rigol DS2202 for $820. If they only shipped the model with everything on, I would have gotten a bunch of features I don't need (200 MHz, etc) and paid $1500.
Good stuff. Looks like a great power supply for the money, although I share your disgust for the rotary knob and the surrounding numeric keypad.
Just got mine today. Very nice supply. Found a small niggle. Turn any output on and enter storage menu, then turn the output off and it says its off but remains on. Resets on exit of storage menu.
What's the procedure for configuring the voltage levels on this supply? I've noticed that whenever I power it on, it resets to 0
Sorry if we sometimes might think you are getting paid for your reviews, we are so used to hype that that we often think that when we see something on main stream media pertaining to products/services we often think that there is some sort of a catch. Anyway, the reasons we watch your videos are many because you have so much to offer and we are lucky to have you.
I always find it lame when companies try and charge you extra for software to enable functionality that is physically present in the hardware you already bought.
Deliberately software-crippling kit before selling it is a really horrid sales technique.
I beg to differ since it's just a software handicap, some people will always find ways to hack it and save us a load of cash in the process.
@@behemothinferno agreed
behemothinferno Hahahaha currently running hacked licences on Rigol Gear.
Been looking at one of these for a little while, this video made me buy one today!
I think it's a great idea. The only other option is for them to spend more money making physically different units, which would increase the cost of all of the variations, and also means you would need to pay for a whole new unit if you found you needed extra features.
If there's extra stuff in the box that's not active because you haven't paid for it, what's the problem? No different to having a satelite receiver with channels disabled until you pay the premium rates etc.
That was my first thought. But what about another possibility: perhaps it's not like paying for extra features, but actually like a discount for people who don't need the full functionality.
The persistence is incredible. It looks just like an analog scope.
19:29 that is stupid useful
especially when I'm testing within a voltage range
I usually have to be extremely careful not to turn it up too high
which can be easy to do as my psu has velocity control
I wonder if they really use a monochrome display. I doubt it. I think they actually use the same hardware for all models with 3 channels.
they don't. Take a look at 23:20
@@istvan8905 old comment, but... I think Narwaro is right. At 23:20 you can see multiple colors on the display at once, even -- the color select section.
Still smiling about 0:15 - Dave's 'first impression videos' are better than many other 'real reviews' - as always a big thumb's up & thanks for the video..
You got ripped off, Dave! You should've got the Hello Kitty version, they are a much better deal and they will look really cute on you workbench! : )
I still cant get over spending the cash for the extra resolution and then seeing its out by $90.
The Combat Engineer just bought the DP711 and paid for the HIRES all to be told 18-24mV is with in error and I have no way to calibrate it. I will be getting a refund.
have they updated this, i just bought one, did not realize this model was this old
For the 1.5v issue, can you find a really cheap digital watch or something and connect it to the watch to see if it will fry the device or damage it?
Its the same accuracy, to the given spec. LSD is not guaranteed unless the specs say so.
Are you sure it's not a monochrome LCD and a RGB backlight?
Dave, i used to have a power supply that wouldn't current limit for a small delay after turn on. I smoked a few things before I chucked to the shit tin. Can you whack an LED on an output current limited to say 20mA and then switch off and back on? If it passes that test I'll go buy one.
Just a comment about overcurrent and overvoltage protection. A lot of PSUs switch off when they hit overcurrent conditions. This causes the power rail to oscillate and will damage your load if it has inductances in it. I would like t9 see how this PSU works under those conditions.
wow my lcd looks terrible compared to this, wonder if the camera is making the contrast better, mine is just aweful
Im not that keen on the look of the unit but I recon with a few little software tweaks and a deeper control nob its going to be tuff to beat
It clearly displays multiple colours *SIMULTANEOUSLY*.
Look at the segment when he's in the colour-scheme picker. It has a red box, a blue box, a green box, and a white box AT THE SAME TIME.
I have to say the UI looks to be very good on this psu
Do you suggest getting one of these bad boys rather than a used Agilent?
If a former guy has totally dejusted the menue.What is then your Setup time to get an Output Voltage ?
Which video did you watch mate? The one I just saw he seem reasonably happy with it considering the low cost.
interesting my PC power supply is working fine for me for now, but this does look tempting, especially since I'm getting into more sensitive boards.
Well I just made my first and probably last RIGOL purchase. I orderd the DP711. First unit I received had a faulty tuning knob. Now the second replacement unit I received is reading anywhere from 18-24mV higher than the actual output and set out put. Rigol is telling me that is with in the 0.05% error of the display. So why did I pay $60 extra for HIRES to unlock a false reading. Not only is last digit wrong but the second to last digit is also wrong. Sound like they running a scam. Rigol also says there is no way to calibrate this. Rigol also claims this unit you are featuring DP832 also has the same 0.05% error yet when I watch your videos yours are right on. Rigol now refuses to swap the unit because Thayer claim it's in spec. So what gives? This is bull. My eBay $60 supply is more accurate
I have a KEYSIGT power analyzer. 4 channels, very expensive. Modular, all upgrades are hardware. Then I have a ATTEN TPR3020S, which is hell of a powerful unit. Then there is my Hewlett Packard 24V 50A beast.
I use the Keysight unit and I am used to it, can use it without really looking at it.
What's with that Power Up Voltage Spike? Seems kind of tragic depending on if you had something connected. Possibly could take out that high end processor on that $100K proto board you mentioned. But maybe no current flow at Power Up? I don't think you checked power up current with the load, just the voltage.
Thanks for the review.
+Wes Z Yeah bit odd that. I mean even the old audio amps had a relay that kicked in when the amp was stable after power-on. I'm sure that would be an easy fix.
@VintageMayo
Oooh that is expensive... So please let me know what super cheap alternative you bought in stead.
Thanks in advance..
I mentioned in this video that I bought this unit. Not that it makes any difference at all to how I review things or what I say. I NEVER get paid to review products.
If I'm not mistaken, you've accused me of this commercial bias before, you are wrong. Lets see YOU go buy the supply and do a first impressions review and compare it with the ATTEN, and see what your reaction is. If it's a nice product I say so, if it's a shit product, I say so. It's not my fault if *insert manufacturer here* makes good stuff or crap stuff all the time. Rigol happen to make generally good stuff. If this video was "too commercial" why would I mention the BAD stuff I don't like?
the lag is probably a safety in case you over shoot your voltage you can correct it before your device your power breaks
I would love to see how this device is chained up for a positive and negative power-supply and how it performance on that. Any idea Dave? (think op-amps). Or is this a stupid question?
I have to admit, I *love* the looks of this. I am going to buy it.
You should do a video on Lab Power Supplies for beginners. I would love to get a bench PSU, but all these expensive ones are a bit out of the range of beginners like me.
Is the output channel isolated from each other ?
Good Video, Dave. This looks like a supply I would buy with my own money. My only gripe is the depth of the case. That's pretty deep for me.
Nice video Dave. I would like to see what is inside and your point of view on that. If i will buy one i want to be sure it is good one. Please make some video about it.
Are there any firmware updates and are you able to do a little a little editing to the firmware? ;)
I would definitely like to see you control the DP832 power supply using your computer.
Well there are only 26 letters - not enough for me so I would have to use folders mounts also on windows...
This power supply can pass led test?
I assume without the license its still 100% accurate to lsd?
I really hate the entire software upgrade stuff, it really pisses me off TBH,
How hard would it be to buy a new microcontroller and replace the Chip, program your own one after working out the circuit diagram / inputs?
That display mode key would be good if it toggled between the 3 display types
Dave, have you made any progress on the uSupply lately?
I have had mine for few months now. Its awesome a I haven't managed to kill it..Yet. I have killed three other PSU's in less than 1 year. This is great and works really well handling all sorts of circuits I make it power. I love the rotary control as this make thumb spinning real easy. Got all the upgrades. No Cloud though. Only 2 complaints, 25 watts of power while its quiescent. If you lock the keypad you have to network into it to unlock it.
+Elecifun Dont short a DC motor when you test them to this power supply!! It blows a fuse and mosfet in them. But an Keysight one does not have this problem.
EETechs Thanks for the input. I have given mine quite a bit of grief so far and it is still good. I do not quite understand your test situation regarding blowing mosfets, do you mean blow the mosfets inside my DP832?
Elecifun Yes. You will blow a mosfet and fuse inside the unit if you short a DC motor that it runs.
EETechs Does it not matter the size of the motor? lol it doesn't make sense. Short a DC motor and lol it blows a mosfet and fuse. OK cheers I will have whatever you are drinking ;-)
Does this thing still have the turn on voltage spike on it?
A 1998 PSU from a Pentium S PC makes a great lab power supply - +12, -12, +5, -5, +3.3, overcurrent protection, ground...
And it was free too!
Does the spike go away when you hook up the ground on the back?
Great video. Thanks dave! i'm currently looking for a multi output DC PS. This could be the one, but it seems to be a lot more featured than my needs. However, a great preliminary review.
Looks quite good.. somehow i like the monochrome displays a lot more on psus. but that power on transient really needs to have a second look by rigol.
it is possible to connect the outputs in series and parallel?
for more current or more tebsao
Just in time answer!
Yes. 30V channels are independent.
I have the power supply PPS2116A and I like some of the functions - especially the memories. Unfortunately there are some bad sides of the PPS2116A. The rotation knob is made with low quality encoder and after a few months/years it is really not reliable - very difficult to operate. But the worst is that the PPS2116A can easily damage your circuits. It already destroyed a few of my electronics, mobile phone, AM meters fuse etc. How it is possible? When you turn off the PPS2116A and you do not DISCONNECT your circuit, the PPS will send cca 30V for 200ms to the outputs. They can be ON or OFF it does not matter, the 30V is sent to the outputs. Realy bad design!!!
I can send a osciloscope screenshot for all the cycle: Power on - out On - Power off. There the pulses are clearly seen.
Nice, but is it worth it?
I was unfamiliar with this obscure piece of software you reference. So i looked it up. It appears to be software made specifically for windows users, so it makes sense they would use such a naming scheme.
The oddity being its use in a embedded system.
I do agree agree that the DOS drive notation is familiar to windows users, if not a little ridiculous, why not A:? or even better /
Can DP832 give 30v 6a with parallel connection of 1-st and 2-nd outputs?
Yes
You should make a video on how to modify an atx psu to make it variable voltage. Like higher than 12v
No, look at the display settings menu - clearly showing different colored squares.
What alternatives exist with similar features?
So this PSU can only supply up to 3A? or max 195Watt on a single channel @ specific voltage?
Thanks for answering, wanker.
Looks RGB to me, you can see the theme colours red, green, blue, white all together at 21:30.
Then again, just having one colour makes it easier to please more people. It's better than having a million colours all at once going all over the screen, that aren't customizable. This might also be easier on the eyes if you use it for several hours.
Please Dave take it apart, we want to see this supply inside!
Open it and make a serious test with load please...this gonna be more helpfull for us
Would think they could have put a few relays on the outputs to prevent those spikes until the PSU had booted and settled.
Well, if you keep whinging, in future they won't expose the license upgrade path to the user and you'll have to pay to get the license installed as well as shipping. The new licensing model is way better then the bad old days. A company can spend what they need at the time and then if they need features they can purchase them later. It spreads the cost of a good instrument out over a longer time. Good for business.
What is this, a product that doesn't cost a fortune, doesn't suck, doesn't have a terrifyingly bad user interface, has good specs, and delivers on the specs it claims.
I must have one.
Hah I was just wondering about this unit a couple of hours ago!
A tip: you can watch movies on Flixzone. Me and my gf have been using it for watching all kinds of movies during the lockdown.
@Lance Westin Yea, I've been watching on flixzone} for since december myself :D
@Lance Westin definitely, have been using Flixzone} for years myself :)