Rigol DHO804 Test and Compare Thread

[rpro]

Between 50ns and 500ns it remains in descending 6 digits and between 50µs and 100µs there is this dramatic drop again.

You are probably well aware of this, but in case it helps others, keep in mind that the capture rate is limited by the time it takes to display the waveform on the screen. For example at 100µs/div and 10div, the capture rate can not be any faster than 1/(1000µs) or 1000 wfms/sec; at 1ms/div it can be at most 100 wfms/sec, etc. 

[Martin72]

Hi,
This hard drop down I didn´t noticed on any other scope before, including the DHO4204.

[rpro]

Hi,
This hard drop down I didn´t noticed on any other scope before, including the DHO4204.

However, it may be of interest to note that, whereas at 20ns/div, 42K wfms/sec captures only 0.84% of the 5M/sec max available; at 1ms/div, the 36 wfms/sec you've measured in normal mode captures 36% of the 100/sec max available...

(Also, at 50ns/div, the 1M wfms/sec you've measured covers 50% of the 2M max avail., which is very nice.)

[Fungus]

I just did, it doesn't look nice, but I don't know the settings, nor are they revealed there.

Send Dave a PM.

This hard drop down I didn´t noticed on any other scope before, including the DHO4204.

I recall seeing similar hings in a few videos.

I can't mathematically do 1M at all settings. There's only 50M memory and it has to capture at least a screen-width of data for each "wave". If it can do it at half a dozen different settings then that seems good enough.

[core]

It seems that a Black Friday for DHO1000 will start soon :

https://www.rigol.eu/NEWS/news/58.html

with 40% discount it sounds interesting vs DHO800 ...

[Fungus]

It seems that a Black Friday for DHO1000 will start soon :

https://www.rigol.eu/NEWS/news/58.html

with 40% discount it sounds interesting vs DHO800 ...

DHO1074 costs $899. With 40% off that's $539.

You get a bigger screen, 200MHz, 2GSa/sec., 100Mpts.  (assuming a hack)

[Antonio90]

It seems that a Black Friday for DHO1000 will start soon :

https://www.rigol.eu/NEWS/news/58.html

with 40% discount it sounds interesting vs DHO800 ...

DHO1074 costs $899. With 40% off that's $539.

You get a bigger screen, 200MHz, 2GSa/sec., 100Mpts.  (assuming a hack)

It costs 999, I think, It already has a 10% discount.
The price will be €599 most likely, which is still pretty good. You also get internal 50 Ohm termination.

[Mechatrommer]

It seems that a Black Friday for DHO1000 will start soon :

https://www.rigol.eu/NEWS/news/58.html

with 40% discount it sounds interesting vs DHO800 ...

DHO1074 costs $899. With 40% off that's $539.
You get a bigger screen, 200MHz, 2GSa/sec., 100Mpts.  (assuming a hack)

damned i bought dho800 too early as dave simply put it, they are going to play the market by themselves. someone must be "fuck me off" by this "die veneris nigrum" thing...

[core]

For sure I will get one even if I already have enough oscilloscopes. I don't have a 12 bit one 

We'll see if the offer will be worldwide.

DHO800 it's OK as functionality, but the effective screen size is very small. The all-time active menus takes a lot of space. 10 inch is much better for this interface.

Also, the USB-C power supply connector it's not on my taste.

[ebastler]

You also get internal 50 Ohm termination.

Are you sure? I don't think the DHO1000 has that; the DHO4000 might.

[core]

Hardware it's the same as HDO4000.
I think it's a matter of hacking.

[ebastler]

Hardware it's the same as HDO4000.

I don't think so. The DHO4000 has dual ADCs twice the sample rate too, and active probe interfaces.

[core]

Hardware it's the same as HDO4000.

I don't think so. The DHO4000 has dual ADCs too, and active probe interfaces.

There is a teardown on Dave's Youtube channel, the input stage is the same. Even the 50 ohm path is there.

[Antonio90]

You also get internal 50 Ohm termination.

Are you sure? I don't think the DHO1000 has that; the DHO4000 might.

Well, not really, as I haven't read the datasheet or manuals, but the images on Rigol.eu say so.

[ebastler]

You also get internal 50 Ohm termination.

Are you sure? I don't think the DHO1000 has that; the DHO4000 might.

Well, not really, as I haven't read the datasheet or manuals, but the images on Rigol.eu say so.

It looks like they have dropped this feature late in the game. There's no mention of 50 Ohm inputs in the datasheet. And while the manual has a section on "Selecting the input impedance", all that section says is that there's a fixed 1 MOhm impedance only. (But then there is a leftover sentence in the section on AC/DC setting stating that 50 Ohm impedance always forces DC coupling...)

[Fungus]

Who's going to be brave enough to buy one and find out if it has 50 Ohm when you change it to a DHO4000?

[Martin72]

We already have a DHO1000/4000 Thread...

[bobxyz]

Can anyone comment on the web browser interface of the DHO814 versus the Siglent SDS1104X-E?
- Does it behave exactly the same as using the scope's touchscreen (or mouse) directly?
- What resolution does it support - just 1024x600 (or 800x480 for the Siglent) or is higher resolution available?
- Does it run at full speed, or is the update rate noticeably slower?

[background: I'm looking for a small quiet desktop scope for hobbyist use - generally 2-layer PCB debug, mostly digital with small amounts of analog conditioning circuits.  I have a couple old LeCroy scopes in the closet if I need high bandwidth, but the LeCroys are big and noisy.  Most of my debug time is spent in front of the PC on my bench - updating code, taking notes, viewing documentation, etc.  Having good web based control of the scope makes the debug and documentation (screenshots) faster and easier.]

[Fungus]

Can anyone comment on the web browser interface of the DHO814 versus the Siglent SDS1104X-E?
- Does it behave exactly the same as using the scope's touchscreen (or mouse) directly?

Yes.

- What resolution does it support

The same as the 'scope.

Does it run at full speed, or is the update rate noticeably slower?

Pretty much full speed.

[background: I'm looking for a small quiet desktop scope for hobbyist use - generally 2-layer PCB debug, mostly digital with small amounts of analog conditioning circuits.  I have a couple old LeCroy scopes in the closet if I need high bandwidth, but the LeCroys are big and noisy.  Most of my debug time is spent in front of the PC on my bench - updating code, taking notes, viewing documentation, etc.  Having good web based control of the scope makes the debug and documentation (screenshots) faster and easier.]

It's also very easy to take screenshots and record videos via the web interface.

[skander36]

We already have a DHO1000/4000 Thread...

Indeed, and there has been said that the 50 ohm cand be activated with vendor.bin method as so the 800 MHz BW. But no real use without 2 ADC as the signal is halved and processed weird. 

[Martin72]

Can anyone comment on the web browser interface of the DHO814 versus the Siglent SDS1104X-E?
1- Does it behave exactly the same as using the scope's touchscreen (or mouse) directly?
2- What resolution does it support - just 1024x600 (or 800x480 for the Siglent) or is higher resolution available?
3- Does it run at full speed, or is the update rate noticeably slower?

1: Yes
2: 1280x800 (Rigol)
3: Slower, I´m having a kind of lagging sometimes although my DHO is directly conecting via LAN cable.
But it´s not a kind of showstopper, I like to control the DHO while I´m sitting in my livingroom..

[voltsandjolts]

It seems that a Black Friday for DHO1000 will start soon :
https://www.rigol.eu/NEWS/news/58.html
with 40% discount it sounds interesting vs DHO800 ...

RIGOL DHO1074 £620 on sale now it seems...
https://www.amazon.co.uk/DHO1074-Digital-Oscilloscope-channel-warranty/dp/B0BJ31PHLN

[Fungus]

It seems that a Black Friday for DHO1000 will start soon :
https://www.rigol.eu/NEWS/news/58.html
with 40% discount it sounds interesting vs DHO800 ...

RIGOL DHO1074 £620 on sale now it seems...
https://www.amazon.co.uk/DHO1074-Digital-Oscilloscope-channel-warranty/dp/B0BJ31PHLN

Somebody's dumping inventory.

I wonder what's in the pipeline?

[Martin72]

See my post in the suitable thread, this is a sale of the old designations, I don't think it means anything more.

[voltsandjolts]

See my post in the suitable thread, this is a sale of the old designations, I don't think it means anything more.

I concur, there was likely some legal agreement with the HDO trademark owner that all Rigol HDO branded scopes be removed from the market by a certain date, perhaps end of this year.