Rigol DHO804 Test and Compare Thread

[TurboTom]

...
Yeah of course but in a new design in this day and age a single USB A port is just plain being mean. It's not like there isn't any realestate to have added more.

Not true in case of the DHO900 where the digital probe connector takes up all the space between the USB host port and CH1 BNC. And the '800 and '900 share the same PCB. But it should have been possible to place another USB host connector at the rear.

[ebastler]

I still haven't managed to update my firmware. 
I know the USB stick works because I can see in the file manager.

Have you tried a different USB stick anyway, not too large, freshly formatted with FAT32, nothing else in the root directory?

I recall that this has historically been an issue with other scopes. And there were a couple of posts here relating to the DSO800 DHO800, with one user experiencing software freezes when saving files to USB, while it worked fine for someone else.

[ebastler]

A new update is avaible ?

Yep, see here: https://www.eevblog.com/forum/testgear/rigols-new-dho800-oscilloscope-unbox-teardown/msg5109042/#msg5109042

Some users have reported that a couple of fixes not mentioned in the release notes were also made, e.g. the "crash when turning the encoder past a certain value" thing.

[Fungus]

A new update is avaible ?

Yes!

https://www.eevblog.com/forum/testgear/rigol-dho914s-bode-plot/msg5109180/#msg5109180

(unless it's just a cruel joke...)

nb. The Bode Plot isn't fixed.

[ebastler]

...
Yeah of course but in a new design in this day and age a single USB A port is just plain being mean. It's not like there isn't any realestate to have added more.

Not true in case of the DHO900 where the digital probe connector takes up all the space between the USB host port and CH1 BNC. And the '800 and '900 share the same PCB. But it should have been possible to place another USB host connector at the rear.

I guess it's a market segmentation thing. A second USB host port is clearly a feature found only in midrange scopes, never mind the fact that it only costs 30 cents to add. 

[Martin72]

v00.01.01.00.01  2023/08/10

1. Remove all time-related displays on the instrument
2. To modify the vertical interface, click the wiring diagram to modify the AC coupling function
3. Modify the delayed scan Chinese display as Zoom
4. Modify the order of the menu in the upper right corner, put the measurement in the front and Default in the back
5. The probe ratio interface is removed, and the probe ratio option is added to the vertical first-level menu

Hm, ok I´ll try it now.

[Fungus]

I guess it's a market segmentation thing. A second USB host port is clearly a feature found only in midrange scopes, never mind the fact that it only costs 30 cents to add. 

The HDO1000 has three and it's the exact same chipset.

[tautech]

...
Yeah of course but in a new design in this day and age a single USB A port is just plain being mean. It's not like there isn't any realestate to have added more.

Not true in case of the DHO900 where the digital probe connector takes up all the space between the USB host port and CH1 BNC. And the '800 and '900 share the same PCB. But it should have been possible to place another USB host connector at the rear.

I guess it's a market segmentation thing. A second USB host port is clearly a feature found only in midrange scopes, never mind the fact that it only costs 30 cents to add. 

Define a midrange scope. 

[Martin72]

Upgrade done..

[Fungus]

Upgrade done..

 

Let me download that file again...

[LonnieU]

I spent several minutes there....

You have to select (check) the circle to the right of the filename. Then it will show up in the "Upgrade" window.

[ebastler]

Define a midrange scope. 

10" screen, price close to or above 1000€, multiple USB ports. 

Naming of the ranges is debatable, of course. But the manufacturers seem to agree that their entry-level scopes are characterized by a 7" screen, a price tag in the mid-3-digits, and apparently a single USB port. 

[LonnieU]

Upgrade done..

 

Let me download that file again...

I spent several minutes there....

You have to select (check) the circle to the right of the filename. Then it will show up in the "Upgrade" window.

[tautech]

Define a midrange scope. 

10" screen, price close to or above 1000€, multiple USB ports. 

Naming of the ranges is debatable, of course. But the manufacturers seem to agree that their entry-level scopes are characterized by a 7" screen, a price tag in the mid-3-digits, and apparently a single USB port.

Nearly, $499 7" display 4ch X-E has 2x USB A, one front, one rear.

Also $639 7" display 200 MHz 2 GSa/s SDS2202X-E same ^

[Martin72]

You have to select (check) the circle to the right of the filename. Then it will show up in the "Upgrade" window.

Yepp....
After checking the circle press OK.

[Fungus]

Upgrade done..

 

Let me download that file again...

I spent several minutes there....

You have to select (check) the circle to the right of the filename. Then it will show up in the "Upgrade" window.

Oh...

You have get the .gel file name in the input box.


In the instructions it says "copy the file into the root folder..." and I thought that was enough (it always was in the past on other 'scopes).

I got it to work now. 

[Fungus]

Update: I just noticed one of my USB sticks is NTFS and it was working just fine in the 'scope.

[Martin72]

I must confess before finding it out what the circle means, I´ve copied the file to the local disk and then did the upgrade..

4. Modify the order of the menu in the upper right corner, put the measurement in the front and Default in the back
5. The probe ratio interface is removed, and the probe ratio option is added to the vertical first-level menu

Confirmed, last is really useful.

[tautech]

Do show the range of probe attenuation available and any custom attenuation, if available.

[Martin72]

Sir, yes Sir ! 

More than enough to select.

[tautech]

Sir, yes Sir ! 

More than enough to select.

Custom ?
How many ?

[ebastler]

Custom ?
How many ?

None. Put it on the Siglent sales pitch list. 

[Martin72]

Custom ?
How many ?

There is no such thing, and with 28 options, you don't need it.
For example, we have many differential probes with 200x, 500x, 1000x and even 1500x.
And we have mostly scopes that "offer" only 3 fixed ratios, I find manual input annoying, such a selection as the DHO offers it more practical.

[tautech]

Custom ?
How many ?

There is no such thing, and with 28 options, you I don't need it.

Correction made. 

For example, we have many differential probes with 200x, 500x, 1000x and even 1500x.
And we have mostly scopes that "offer" only 3 fixed ratios, I find manual input annoying, such a selection as the DHO offers it more practical.

Hmmm, use 100x and 1000x passive probes here which of course there should be selections for and as you say differential probes offer many different attenuations as do current probes.

However when working with shunts one does need custom attenuation which it seems Rigol has not allowed for. 

[Fungus]

Uh, oh!

Is somebody compiling a new Rigol vs. Siglent comparison chart?