Rigol's New DHO800 Oscilloscope unbox & teardown

[ataradov]

Nope. Type-C can output many different voltages. You can negotiate with the supply and tell it how many volts you want.

Have you seen pictures of this power supply? Linear (?) Voltage regulator on the output is the most advanced device there. There is nothing that can negotiate. They are just seeding output voltage as is.

There are not even wires to negotiate over. They just have two voltage wires and that's it. It is hilariously non-compliant implementation.

I really hope it is just a temporary hack, because even the label on that power supply makes no sense. They just took cheapest PSU they could find and slapped USB-C connector on it.

[Martin72]

No way the real scope would ship with that.

Agree to this.
Nevertheless, a nice and clear 7" touchdisplay, 6-core cpu, hdmi output, 12 bit, same adc´s as the bigger ones...
This scope will blast everything else away in it´s priceclass.

[ataradov]

I would wait to see performance and general feel of the UI running Android.  It might not be great negating any positives of the hardware.

[Martin72]

Batronix lent me an HDO4204 for testing in February this year for just under 3 weeks (I reported), so I know roughly what to expect.

[Fungus]

Nope. Type-C can output many different voltages. You can negotiate with the supply and tell it how many volts you want.

Have you seen pictures of this power supply? Linear (?) Voltage regulator on the output is the most advanced device there. There is nothing that can negotiate. They are just seeding output voltage as is.

Oh, I didn't look closely. Yeah, no data wires so no negotiation.

No way the real scope would ship with that.

Agreed. I don't know where OP got the 'scope from but there's simply no way. It's not even Rigol branded.

I really hope external power supplies don't become a thing. Who cares if your product is small if you still have to carry random stuff around.

It's no worse than carrying a chunky IEC power cord.

This scope will blast everything else away in it´s price class.

Yep, I'll be getting one when they appear.

[Azusa]

The original power supply is output 12v over typeC directly. It's a non compliant product sure.
It‘s offically did. All first batch of this series scopes are come with it whether where you buy.
I don't know why rigol provide this. It's not as good as let customers purchase the unoffically power supply separately.

but rigol said they will reissued a new power supply for first batch customer later.

[Azusa]

There are the first batch unbox video from customers on bilibili.

https://www.bilibili.com/video/BV1YP411k7Tw/
https://www.bilibili.com/video/BV1Dz4y1776C/
https://www.bilibili.com/video/BV1ox4y1R7qj/
https://www.bilibili.com/video/BV1Lz4y1E7bt/

It's all comes with this power supply even DHO900 series.

[Azusa]

I would wait to see performance and general feel of the UI running Android.  It might not be great negating any positives of the hardware.

It should nearly like DHO1000/4000.The same android 7.1.2 and the same RK3399.And may same software？
Anyway,the options hacking way are the same with DHO1000/4000.The Key.data and SCPI,and only need to modify the model as DHO800 or DHO900 on the golang script.

[slavoy]

There are the first batch unbox video from customers on bilibili.

https://www.bilibili.com/video/BV1YP411k7Tw/
https://www.bilibili.com/video/BV1Dz4y1776C/
https://www.bilibili.com/video/BV1ox4y1R7qj/
https://www.bilibili.com/video/BV1Lz4y1E7bt/

It's all comes with this power supply even DHO900 series.

Wow, it's so tiny. You can hold it in hands almost like a scopemeter

[Fungus]

Wow, it's so tiny. You can hold it in hands almost like a scopemeter

Looks like a perfect form factor to me.

[Fungus]

I can't imagine other countries will allow the import of those power supplies. 12V into a USB-C connector is a big no-no. I hope nobody tries to use one to charge their phone.

(And beware of grey imports  )

[tv84]

I can't imagine other countries will allow the import of those power supplies. 12V into a USB-C connector is a big no-no. I hope nobody tries to use one to charge their phone.

(And beware of grey imports  )

  USB Power Delivery 1.0 has 2 profiles with 12V. All via USB-C. Can't see where the no-no is.

I have a Lenovo with a power supply that allows, among others, those profiles.

[ataradov]

USB Power Delivery 1.0 has 2 profiles with 12V. All via USB-C. Can't see where the no-no is.

Read the beginning of the  thread and look at the power supply shown here. It just sends 12 V without negotiation.

[tv84]

It just sends 12 V without negotiation.

Of course that's unacceptable and dangerous. But Fungus ended up with a generic quote about USB-C and 12V which is, at least, misleading.

[Fungus]

It just sends 12 V without negotiation.

Of course that's unacceptable and dangerous. But Fungus ended up with a generic quote about USB-C and 12V which is, at least, misleading.

I assumed people would have read the post a couple above mine.

Here's the pic, in case anybody else was confused:


12V directly into a USB connector. No data lines, no negotiation.

(not to mention what looks like a simple linear regulator)

I assume the Export versions won't have that.

[chronos42]

it is a diode, not a linear regulator. (Makes this thing not better, of course)

[svetlov]

type C! but then you can power it from the power bank
It seemed to me, or does phosphor emission-ultravision not work satisfactorily on these new 12-bit oscilloscopes?

[Veteran68]

type C! but then you can power it from the power bank

If it were true Type C, then yes you could. The way this is wired, any power bank will only feed it 5V 2A max as there's no data lines to negotiate anything else.

[ataradov]

There is hope that the hardware in the scope would actually at least attempt to negotiate if there is something on the other end, but also would accept 12 V directly from a dumb power supply.

I really see no point in abusing USB-C like that. The PSU here must be a very temporary solution.

[Fungus]

type C! but then you can power it from the power bank

If it were true Type C, then yes you could.

Rigol's web site says you can use a powerbank.

The way this is wired, any power bank will only feed it 5V 2A max as there's no data lines to negotiate anything else.

That's only the power supply output. How do you know what's inside the scope?

[Azusa]

The device has a HUSB238 PD sink contorller.just only the original power supply is 12v directly.
but the output is 15V when i used PD power supply on this device.

[AVGresponding]

It just sends 12 V without negotiation.

Of course that's unacceptable and dangerous. But Fungus ended up with a generic quote about USB-C and 12V which is, at least, misleading.

I assumed people would have read the post a couple above mine.

Here's the pic, in case anybody else was confused:


12V directly into a USB connector. No data lines, no negotiation.

(not to mention what looks like a simple linear regulator)

I assume the Export versions won't have that.

That's clearly an SMPS, what linear supply would have a reservoir cap on the transformer primary?

[tautech]

It just sends 12 V without negotiation.

Of course that's unacceptable and dangerous. But Fungus ended up with a generic quote about USB-C and 12V which is, at least, misleading.

I assumed people would have read the post a couple above mine.

Here's the pic, in case anybody else was confused:


12V directly into a USB connector. No data lines, no negotiation.

(not to mention what looks like a simple linear regulator)

I assume the Export versions won't have that.

That's clearly an SMPS, what linear supply would have a reservoir cap on the transformer primary?

And a shitty one too without common mode chokes or X and Y class caps.

[nctnico]

I can't imagine other countries will allow the import of those power supplies. 12V into a USB-C connector is a big no-no. I hope nobody tries to use one to charge their phone.

That is perfectly defined. USB-C goes to 48V @5A (and some push 6A) nowadays. But Qualcom has their own charging standard which uses D+/D- lines and this standard also goes to 12V (or even more) at several amps through regular USB connectors. It is all about detecting what kind of device is connected.

And a shitty one too without common mode chokes or X and Y class caps.

Actually there is a capacitor across the mains and it looks like this PSU does something clever to filter the harmonics going into the mains. In the end it doesn't matter for as long as the PSU passes CE / FCC limits.

[Martin72]

In the end it doesn't matter for as long as the PSU passes CE / FCC limits.

As long it does, exactly..
Does anyone believe that ?