TSP

Рет қаралды 20,264

Күн бұрын

In this episode Shahriar reviews the latest edition to the R&S SMU family, the NGU401.
www.rohde-schwarz.com/us/prod...
This instrument offer four-quadrant operation, 60W total output power, 6.5 digit resolution as well as 500kS/s digitizers on both voltage and current readbacks. The instrument also offers a verity of output control and arbitrary waveform generation. This review is organized as follows:
00:00 - Introductions
00:50 - Front & back panels, interfaces, design
02:40 - Detailed teardown & architectural analysis
08:36 - Pooch!
08:45 - USB Power Bank experiment, NGU GUI design, primary capabilities
13:20 - Multi-quadrant operation, sink/source conditions
15:49 - High-speed sampling, auto-ranging and transient detection
18:29 - Deep-sleep battery drain detection of Fluke 233, graphical viewer, fast logging
22:35 - Characterizing a DC/DC converter, transient output current
27:19 - High output capacitance mode, oscillation detection
29:45 - Current/voltage priority modes
30:40 - Fast arbitrary waveform generation,
34:20 - Additional functions, OVP, OCP, OPP, Modulation Input, trigger IOs, slew control, fast transient
36:18 - Concluding remarks
www.TheSignalPath.com
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Пікірлер: 63

@EEVblog 2 жыл бұрын

Nice review! I always find it dissapointing when manufacturers add graphing capability to instruments and then provide little or no means to scale and label it.

@phenyl22 2 жыл бұрын

They don't have multitouch zoom capability? That would be the easiest, albeit imprecise method.

@benbaselet2026 2 жыл бұрын

Gotta leave some options unchecked on the software for the more expensive model I guess.

@Obladgolated 2 жыл бұрын

Russian proverb: "The marvel is not that the bear dances well, but that the bear dances at all."

@unprintable469 2 жыл бұрын

A more detailed teardown à la EEVBlog would be awesome! Has Rohde & Schwarz forgotten about you? :(

@KostantisX 2 жыл бұрын

Thank you Shahriar. Excellent review, as always!

@handyman7147 2 жыл бұрын

Nice review. Great instrument. The rear panel Connections look like an afterthought.

@andymouse 2 жыл бұрын

Nice review and a nice instrument....cheers.

@itsdaniboybg1919 2 жыл бұрын

Loved the review !

@Jonas_Meyer 2 жыл бұрын

Such a beautiful SMU by Rohde und Schwarz. Would love to see a teardown on the RTO2000 too.

@samfedorka5629 2 жыл бұрын

With 0.02% voltage and 0.025% current readback accuracy, I was going to question the utility of the last 2.5 digits, but after watching your video, I see how helpful it really is.

@Gengh13 2 жыл бұрын

It's important to note that the cat is not included with the SMU, it must be purchased separately.

@hullinstruments Жыл бұрын

Long time fan of your channel. It would be awesome if you tackled a DIY or budget option source measure unit one day.

@moshet842 2 жыл бұрын

Can you make a video of RF cables? There is so much confusion in forums and other videos. There was a nice video you made on RF components that included different styles of connectors for specific purposes. Something similar to that but for cables would be great.

@Thesignalpath 2 жыл бұрын

Sure!

@LiraLab 2 жыл бұрын

That's an amazing review. The fast scale auto-ranging is something on this instrument. I've experienced some difficulties in measuring current consumption of some IoT devices. The deep sleep current consumption starts around 3 uA and then it wakes up to around 10mA in stand-by mode and then goes right into 180mA when transmitting an RF signal, before it goes into deep sleep again. Using a Keithley SMU, I had to put it manually to the 1A scale, otherwise the device would turn off when the SMU was auto-ranging. Another solution to measure this current was to use a 6 1/2 digit bench multimeter, but then I couldn't caracterize well the DC behavior of the device. I wonder if R&S is releasing some units focusing on very low current measurements with triax connectors.

@paulpaulzadeh6172 2 жыл бұрын

I like Tektronix color on it !

@copernicofelinis 2 жыл бұрын

Someone should tell the Google subtitle generator (the one that automatically kicks in on thumb view, at least) that "Rhodes and Schwartz" is not "Rodent Shores".

@plemli 2 жыл бұрын

rodent shorts, rotten shores, ... quite entertaining 😁

@kevina.4036 2 жыл бұрын

Quality design and construction to be expected from Rhode and Schwarz. Hopefully future firmware updates will improve the graphing functionality. Unfortunately I've found their customer service to be pretty unaccomodating towards non-enterprise users. Also, as far as value, I find it difficult to argue that this R&S is a better value than current Keithly or Keysight boxes..

@sebastian_harnisch 2 жыл бұрын

I had a very different experience. Wanted to do a firmware upgrade on my HMP 2030 (a long time after warranty), ran into some issues with USB (pretty poor instructions tbh), but after a few mails we found the problem. I was positively surprised that R&S took the time for a rather old device - non-enterprise too. I'm from Germany, so it could simplify things a bit, who knows.

@benmodel5745 2 жыл бұрын

Nice instrument, but without the ability to plot better it would be hard to choose this over the Keithley 2400, not that I can afford either : P

@peteabc1 2 жыл бұрын

I'm a simple nerd. I see 7 digits, I hit like.

@user-vp8xi3sy2u 3 ай бұрын

Шикарный блок питания.

@IanScottJohnston 2 жыл бұрын

Farnell selling for 5000+VAT (UKP), sounds expensive but I guess it's about right in comparitive terms given it's spec, brand name and target market. I also like how the rear panel has all the options including good old GPIB. Can't wait for the teardown.

@samfedorka5629 2 жыл бұрын

Tequipment (USA) has them for $7200-$9500 (I'm amazed at how much the DVM option costs on the 201), but the 401-COM is on sale for $5000 which is pretty good imo

@Chris_Grossman 2 жыл бұрын

It is $4995 in the USA from Newark (Farnell). The equivalent (and not quite as nice Keithley/Tektronix model is $11K.

@sheffieldhoney 2 жыл бұрын

We use the NGM202 and it has the same graph limitations, we have begged R&S for improvements to the graph side and access to logging data without having to export.

@bakagaijin7452 2 жыл бұрын

Interesting to see how the feedback loop is implemented by R&S and how it stands against NIs 1.8Ms/s SMUs

@krish2nasa 2 жыл бұрын

Informative. What is its current range change behavior? Thank you very much.

@paulpaulzadeh6172 2 жыл бұрын

Shahriar , can you make curve tracer with two such SMU like Keithley that you did before ??

@gacherumburu9958 2 жыл бұрын

👍👍

@Chris_Grossman 2 жыл бұрын

Does this unit temporarily shut off when switching current ranges? Every SMU I have used shuts down temporarily when switching current ranges in auto range mode. If it is biasing a depletion mode FET gate that device will crater when the gate is open. Thus I am forced to use a fixed current range that encompasses the largest gate current I expect to see. The switching in SMU and DVMs occurs because the series current sampling resistor is changed. I am hoping for an SMU that does the sampling resistor switching in a make before break fashion instead of temporarily disconnecting. If this had that capability I would order some immediately. The six figure measurements make running on a fixed range a bit more tolerable, but seamless range switching would be better. This unit in your video appears to be limited to 20V. For testing I would like a unit that can to up to 60V at several Amps. Do you know if R&S is planing on any higher voltage/power models?

@tamaseduard5145 2 жыл бұрын

👍🙏🙏🙏👍

@mc_cpu 2 жыл бұрын

Does the fan have a filter for the cat hair? 😄

@Richard.Andersson 2 жыл бұрын

The biggest downside of this instrument seems to be the low force-to-source voltage drop of only 2 V. At least I think it is only 2 V because they obscure this specification in the manual by calling it "Maximum sense compensation" which is not obvious what it means. So for a typical 4-wire resistance measurement on a substrate/material (without metallic leads) you can only test up to 6 V maximum (2V over each section of the sample), and not use the full 20 V range. In reality you also have contact resistance making it even worse! Keithleys SMUs allow for 5 V drop between force and sense, but if you exceed this value you do not get a warning and you only start getting incorrect measurements. This has caused many issues in our lab! Does this instrument at least give you a warning if the voltage drop between force and sense is more than 2 V?

@douro20 2 жыл бұрын

I wonder if it's running RTLinux?

@tejeshwvardhan1165 2 жыл бұрын

design one SMU on this channel!

@evilsdexter5261 2 жыл бұрын

In Europe they used to have those stupid brittle stickers that said warranty void if removed. Even if you didn't want to open the case, you could accidentally damage that stupid sticker...

@indahooddererste 2 жыл бұрын

well several nvidia GFX cards have it too. So basicly putting a custom cooler on it will remove warranty.

@johndavis1465 2 жыл бұрын

Can to review / test Elektor LCR Meter 2MHz

@paulpaulzadeh6172 2 жыл бұрын

I have both SMU KEITHLEY 2450 and 2461 with kickstar software , measure a lot to match transistor. Performance from KEITHLEY is much better . They done this for 40 years.

@ShinyMajor 2 жыл бұрын

Did I hear Cyclone II? Is that right? That's an ancient FPGA and as far as I know they're not supported anymore but I also only deal with FPGAs as a hobby

@billpeiman8973 2 жыл бұрын

US$5k at Newark.

@dwintechnology-fiona4920 2 жыл бұрын

we are lcd manufacturer, if can we put some short video on your channel, we can pay

@frosty129 2 жыл бұрын

I’m still waiting for the release of Marco Rep’s OSMU.

@plugplagiate1564 2 жыл бұрын

did not know, that a psu can be so complicated.

@unprintable469 2 жыл бұрын

But really, these soldered output wires are just awful... Saving cost for proper connectors, or have they forgotten about that while designing the PCB?!

@arashghasemi 2 жыл бұрын

I'm confused... Why should we pay so much to devices like this when a cheap power supply plus a good voltage stabilizer can do the job?? What am I missing here??

@arashghasemi 2 жыл бұрын

I mean adjustable voltage regulator ic

@bakagaijin7452 2 жыл бұрын

@@arashghasemi 4 quadrant operation along with VSIM/ISVM capability?

@arashghasemi 2 жыл бұрын

@@bakagaijin7452 there are negative regulators too ... what do you mean by vsim isvm???

@martinmckee5333 2 жыл бұрын

@@arashghasemi Most power supplies are a one quadrant instrument. A programmable load is a one quadrant instrument. An SMU, of this sort is four quadrant. It can source and sink on positive and negative rails. For some tests a power supply and DMM is enough, but they are in no way equivalent to an SMU. Not to mention, the accuracy specs of most SMUs are better than the average power supply or handheld DMM.

@arashghasemi 2 жыл бұрын

@@martinmckee5333 I believe you guys are correct. But I can't understand the need. If we wire a transformer to get both + and negative rails and then use heavy filtering and appropriate precision regulators on both rails then can't we do four quadrants with some acceptable precision?? at least for designing circuits like opamps ???

@SomeRandomPerson163 2 жыл бұрын

What you are actualy doing with all that equipment on the shelfs? If you just collect it lol wtf how you so rich?

@Thesignalpath 2 жыл бұрын

Well, I need somewhere for the cat to sit…

@lolilollolilol7773 2 жыл бұрын

LOL I know right ? :x) Answer: he looks for equipments that are failing and repairs them. So he can buy them for 5% of the original price tag, try to repair them and then either keep them or resell them for 10x the price he bought them.

@hullinstruments Жыл бұрын

Long time fan of your channel. It would be awesome if you tackled a DIY or budget option source measure unit one day.