Rigol's New DHO800 Oscilloscope unbox & teardown

[mwb1100]

Can anybody recommend a known model of WiFi dongle that works with these?

@scopestuff confirmed that the TP-Link TL-WN725N works.  That's the WiFi dongle supported by the SDS1104X-E (so some people here will already have one).  In the US it's available on Amazon for $10.

Also be careful with TP-Link TL-WN725N which someone advised as compatible, since it has 3 versions... V1 uses RTL8188CUS, and V2/V3 use RTL8188EUS

The one I got from Amazon exactly 1 year ago was hardware Rev 3.8 (from a label on the box).  I'd think that anyone purchasing new stock should be fine.  It enumerates as:

Code: [Select]

0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter
(I really hate that WiFi vendors often don't change model numbers when they change to an incompatible chipset)

[Sys_Bug82]

Thanks, i didn't know that there are so many versions of RTL8188 dongles. And many offers don't specify which version it is.  I ordered a new one which should be the EU version.

[sergk]

I'd appreciate it if someone who already has DHO900 with LA and caliper could make four precise measurements. #3 and #4 are the distances between the front surface of the scope shell and the plastic edge of the IDC socket, both sides should be measured... it seems to me the right side is slightly higher than the left.

I'm trying to adapt/design a nice-looking shell of DIY LA for new DHO scopes.

Here is my measurements:
1 - 10.5mm
2 - 74mm
3 - 6.6mm
4 - 8mm

Yes, right side is higher (photo attached), and as you can see - edges are rounded, so 1 and 2 is slot size without edges, also socket is slightly smaller, than LA slot in plastic (second photo).

[Sys_Bug82]

My new Wifi dongle today and I got it working with my DHO804.

Code: [Select]

0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter
I connected the Wifi dongle and a USB Keyboard over a powered USB hub to the oscilloscope, then i turned the oscilloscope on.

With the following adb command i opened the android settings app:

Code: [Select]

adb shell am start com.android.settings
Then i could choose the wifi network and enter the password with the usb keyboard.

to exit the settings app i used:

Code: [Select]

adb shell am force-stop com.android.settings
Is there an a way to get an onscreen keyboard?

[idolclub]

Rigol releases new firmware v00.01.02.00.00 for DHO800 / DHO900 ~ 2023.11.16

[Model Supported] All the DHO800/900 series oscilloscopes

[Latest Revision Date] 2023/11/2

[Updated Contents]

v00.01.02.00.00  2023/11/2

1. Self calibration optimization update
2. Solve the problem of UltraLab startup connection failure
3. Solve the problem of failure to save waveform in wfm format
4. Add education model equivalent settings
5. Solve the problem of unresponsive touch on startup screen



v00.01.01.00.02  2023/09/12

1. Self calibration optimization update
2. Update Help Documents



Download:
https://alc-sh-wwwdownload.oss-cn-shanghai.aliyuncs.com/cn/Firmware/Digital%20Osscillscope/DHO800%26DHO900/DHO800_DHO900(Software)Updatev00.01.02.00.00.zip

[RAPo]

What is point 4?

[Martin72]

No idea, but but one thing in advance:
I have just installed the latest firmware - The hacks remain...
Just for info.

[Serg65536]

Rigol releases new firmware v00.01.02.00.00 for DHO800 / DHO900 ~ 2023.11.16

Download:
https://alc-sh-wwwdownload.oss-cn-shanghai.aliyuncs.com/cn/Firmware/Digital%20Osscillscope/DHO800%26DHO900/DHO800_DHO900(Software)Updatev00.01.02.00.00.zip

Where do you get this info?
On the international site it is 1.00 still.
On the rigolna.com the latest firmware is 1.01

[Fungus]

No idea, but but one thing in advance:
I have just installed the latest firmware - The hacks remain...
Just for info.

Can it calibrate itself as a DHO900 now?

[Fungus]

v00.01.02.00.00  2023/11/2
1. Self calibration optimization update
2. Solve the problem of UltraLab startup connection failure
3. Solve the problem of failure to save waveform in wfm format
4. Add education model equivalent settings
5. Solve the problem of unresponsive touch on startup screen

So... none of the bugs we've been reporting here or anything really worth having? 

v00.01.01.00.02  2023/09/12
1. Self calibration optimization update
2. Update Help Documents

A minor update that wasn't released?

Download:
https://alc-sh-wwwdownload.oss-cn-shanghai.aliyuncs.com/cn/Firmware/Digital%20Osscillscope/DHO800%26DHO900/DHO800_DHO900(Software)Updatev00.01.02.00.00.zip

From Aliexpress??

[bulba99]

Chinese website

https://www.rigol.com/products/detail/DHO800

[Martin72]

Can it calibrate itself as a DHO900 now?

Do you mean the offset problem we had when we installed the 900 vendor ?
I haven't tried it yet, I was busy with the ultra acquire.

[Fungus]

Can it calibrate itself as a DHO900 now?

Do you mean the offset problem we had when we installed the 900 vendor ?

Yes. Release notes say there have been two changes to the calibration code. Maybe that got fixed.

[Martin72]

I'm currently running the self-calibration on mine, I've only updated the firmware, but that was probably enough to give me an offset on each channel.

[ebastler]

Did they fix any of the bugs reported here on the forum? If the release notes actually list all changes, it seems that the answer is "no". Maybe they have done more than what the notes say; wouldn't be the first time. Or maybe they just don't read this forum. 

[Martin72]

Finding bugs only started a few weeks ago, when the first scopes were available in the rest of the world.
They can't implement it that quickly.
I'm currently thinking about whether I shouldn't throw the new firmware down again - self-calibration failed, new attempt...

[dmulligan]

Or maybe they just don't read this forum. 

I don't blame them for not reading this forum.  The signal to argument ratio far is too low in every DHO800/900 thread.

[Martin72]

They also have their people here, they just don't make an active appearance.
(rigol.eu support, for example, was always well informed, at least that was the case in 2020)

[Martin72]

Hands off the firmware update!
The second attempt also failed.
Tomorrow I will see if I can downgrade again.

[Fungus]

Hands off the firmware update!
The second attempt also failed.

The firmware is an Aliexpress special?

Tomorrow I will see if I can downgrade again.

Downgrading works just fine on these... I've done it a few times.

[Martin72]

Yepp, couldn´t wait until tomorrow...
Now the self-cal runs....let´s hope.
Hmm....looking a the message in the pic again, ADC core order...0-7 ? Eight cores??

[Martin72]

Final proof that the linked firmware is CRAP, Hands off !!!
After downgrading self-cal is OK.

[Fungus]

I don't blame them for not reading this forum.  The signal to argument ratio far is too low in every DHO800/900 thread.

The bugs thread is quite good.

[Serg65536]

Final proof that the linked firmware is CRAP, Hands off !!!
After downgrading self-cal is OK.

You should try to push old *.cal files before doing the first cal on 1.02 firmware.
And now you can use DHO924 vendor.bin with (almost) no offset and high voltage precision.

[Serg65536]

I have a good experience with the 1.02 FW (DHO800 CN page or direct link)
1) Now I can use DHO924 as a main firmware, zero offset could be removed by the calibration. And the voltage accuracy is great also.
2) Now ADC Gain self test is turned on by default.
3) AFE zero self cal procedure increases the DC offset badly. To restore it you can push old cal files and repeat default calibration.

Now it's time to hack it more.

PS: push original old *.cal files (without default *.cal files), if your calibration fails.