The DHO800 and DHO900 are built on the same basic platform as the HDO1000 right? This would mean that Rigol can use the same code base for all scopes on this new platform. A common code base should mean fewer bugs for new products. I am looking forward to seeing if this is the case.
The DHO800 and DHO900 are built on the same basic platform as the HDO1000 right? This would mean that Rigol can use the same code base for all scopes on this new platform. A common code base should mean fewer bugs for new products. I am looking forward to seeing if this is the case.
I don't know if it's exactly the same files but the chipset, UI and software functions are identical.
The main difference between 800 and 1000 is in the screen size, bandwidth and memory size.
So, does that mean the possible future hack may increase the sample rate to 2 GSa/s as well?
The DHO800 and DHO900 are built on the same basic platform as the HDO1000 right? This would mean that Rigol can use the same code base for all scopes on this new platform. A common code base should mean fewer bugs for new products. I am looking forward to seeing if this is the case.
I don't know if it's exactly the same files but the chipset, UI and software functions are identical.
The main difference between 800 and 1000 is in the screen size, bandwidth and memory size.
So, does that mean the possible future hack may increase the sample rate to 2 GSa/s as well?
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:
[img removed to save space, just follow the link]
12V directly into a USB connector. No data lines, no negotiation.
(not to mention what looks like a simple linear regulator)
Some more diy:
https://youtu.be/MbBq1AVIQAc?si=P2TCHVbFpOiuOEisWow
If I was to do it I'd use standard camera batteries like say the Sony NW-F970. But they would protrude a lot.
So just an off the shelf battery bank would work a treat with a suitable mounting, but it woudl block the airflow vents.
The one pictured here is so perfect in terms of form factor that Rigol should manufacture it.
It's the same ADC as the 1000 series but the 800's FPGA probably can't process that much extra data.
It's the same ADC as the 1000 series but the 800's FPGA probably can't process that much extra data.But what about DHA900?
Also found another difference from their specifications:
DHA800 and DHA1000 have a sensitivity range of 500 μV/div to 10 V/div
but DHA900 has a range of 200 μV/div to 10 V/div
It's the same ADC as the 1000 series but the 800's FPGA probably can't process that much extra data.But what about DHA900?
Also found another difference from their specifications:
DHA800 and DHA1000 have a sensitivity range of 500 μV/div to 10 V/div
but DHA900 has a range of 200 μV/div to 10 V/divThat is just a magnification of the 1mV range. And Rigol says to use at least 8mV/div for measurements. Read the fine print.
1mV/div is hardware sensitivity for them all, including 800/900/1000/4000.
They all use same frontend preamp chip...
But the biggest thing is the single ADC - the Siglent SDS1104X-E has dual 1G sampling, so 4 channels at 500M.
The DHO900 is a bit of a mystery. It obviously doesn't have high enough sample rate for 4 channels @ 200Mhz so it seems like it's going to alias badly if you feed it a 200Mhz signal with four channels enabled.
I was really thinking about the DHO800 series as the hype seems to be claiming them as the new budget king. No doubt they are a good value, but I'm not convinced they stomp Siglent considering that the DHO814 is the same price as Siglent's SDS1104X-E.
I do like the comparison to SDS1100X-E though. That is kindda important to bear in mind too... very good scope itself just no custom ASIC on Siglent side to compete with (to answer in future with a 12-bits). As was already previously discussed.
Who buys a DHO814 when the DHO804 is hackable?
(and only 30Mhz less even if you don't hack it - Rigol has been smart in not making the base model 50Mhz this time around)
Plus: You get a touch screen, more portability, HDMI, multi-windowing... lots of things the Siglent doesn't have. It's not all about paper specifications.
Once you've tried a touch screen (or mouse) then using a twisty knob for navigation is a complete joke. I went from a Rigol DS1054Z to a Micsig and I'd never go back even though the Rigol can do more things.
I'm certainly going to do my best to hack my DHO804 into a DHO924S, with the logic analyser and AFG. But even if I fail, I can still get a useful bandwidth boost with the firmware hack.
I'm certainly going to do my best to hack my DHO804 into a DHO924S, with the logic analyser and AFG. But even if I fail, I can still get a useful bandwidth boost with the firmware hack.
It's going to be interesting to see if that's as simple as soldering on a connector and cutting a hole in the case.
I was really thinking about the DHO800 series as the hype seems to be claiming them as the new budget king. No doubt they are a good value, but I'm not convinced they stomp Siglent considering that the DHO814 is the same price as Siglent's SDS1104X-E.
Who buys a DHO814 when the DHO804 is hackable?
I poked around looking for prior 8bit vs 12bit discussions but couldn't find as many on topic as I expected... My gut says obviously 12bit is better than 8bit, but I seem to recall many folks saying that given the size of the display you'd be hard pressed to differentiate much improvement on the screen.
But the biggest thing is the single ADC - the Siglent SDS1104X-E has dual 1G sampling, so 4 channels at 500M. If I understand correctly, the new Rigol's are 1.25G X 1 and then get divided down the more channels you use. It seems like a higher sampling rate might offer more benefits compared to larger bit depth for hobby use?
Still - great to see this level of performance coming at such competitive pricing. And the possibility of portable power is always welcomed.
what are those 2 missing BGA memory chips used for? Surely they aren't dedicated for the LA to work?
I'm guessing/hoping that without them fitted, the LA memory depth will be quite limited in a hacked DHO800 compared to the DHO900.
Once you've tried a touch screen (or mouse) then using a twisty knob for navigation is a complete joke.
This thing is badly in need of a good and thorough review. A lot of people seem to praise it just because it has a 12 bit ADC, and the only screenshots I've seen suggest 3 of those bits are noise. Rigol has also been slow in adopting measurements from the real data, and if this thing does on screen measurements from the screen pixels, then the 12bit ADC is not very useful at all, but I guess that could be fixed with a firmware update later, but apparently it's already on the chinese market for half a year.
That said, is there anyone on the internet who does real thorough reviews of oscilloscopes? Most are just showing some sine waves, pushing some front panel buttons and then concluding "yeah it works". And often they also show some of the new features of a new scope. but thorough reviews are really rare. How well does it capture difficult data? Does the segmented memory actually work as advertised? Resolution and accuracy of RMS measurements and things like that. For example, if this Rigol with it's 12 bit ADC still has a 3% accuracy for on screen RMS measurements, then that's pretty atrocious in my view. At the moment I'm not very impressed by this thing (yet), but it's too early to draw any conclusions, but I'm certainly not going t buy it just because it has a 12bit ADC.
Once you've tried a touch screen (or mouse) then using a twisty knob for navigation is a complete joke.Some people will find it preferable to play with knobs though over just touching.