Products > Test Equipment
Rigol HDO1000 and HDO4000 12bit oscilloscopes launched in China
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ebastler:

--- Quote from: Antonio90 on November 24, 2023, 11:04:01 am ---It's updated on their page.
You can buy it directly without asking for best price (unless you want them to match the 10% batterfly discount).

--- End quote ---

Thanks, I had not looked further than the DHO1000 series overview page on Batronix.com, which still shows the regular list prices. Yes, asking for the additional 10% discount requires sending them an email.

Ah, well, I already ordered from Amazon yesterday after Batronix told me "sorry, no can do". No extra 10%, but I get an extended return period until end of January. Which is nice considering that I will only start playing with the scope after Christmas. (Well, probably on Christmas eve to be honest...  ;))
tszaboo:

--- Quote from: ebastler on November 24, 2023, 06:42:10 am ---
--- Quote from: thm_w on November 23, 2023, 11:38:43 pm ---Depending on your setup, a BNC T could work to avoid the stickout.
I'm 90% sure I'd blow up the 50R input at some point if it were internal. So easy to put 12V DC into the scope at the wrong time.

--- End quote ---

I have sometimes used a BNC T + terminator in a pinch. But the termination/match is not as good, and they tend to get in the way of the knobs on most of the input jacks.

Where did Thorlabs find a 5 kOhm terminator for that photo?  ::)

--- End quote ---
It's because the scope input is still going to be 1Mohm  || 14pf for example. So you have a transmission line with a small stub with a open and a capacitor on the end of it. The -3dB point with 50Ohm is 500MHz for such a system, ignoring the reflections, standing waves and other issues due to the stub. There are through terminations for Tektronix scopes that are specific to the scope, that supposed to push this out a little further with some compensation in the 50 Ohm, but it's not ideal at all.
thm_w:

--- Quote from: tszaboo on November 24, 2023, 11:30:44 am ---It's because the scope input is still going to be 1Mohm  || 14pf for example. So you have a transmission line with a small stub with a open and a capacitor on the end of it. The -3dB point with 50Ohm is 500MHz for such a system, ignoring the reflections, standing waves and other issues due to the stub. There are through terminations for Tektronix scopes that are specific to the scope, that supposed to push this out a little further with some compensation in the 50 Ohm, but it's not ideal at all.

--- End quote ---

Was able to reach -3dB of ~680MHz with a T junction and 50R (MSO5000 1MOhm + 17pF in), but maybe that was my limiting factor, I'll have to try again with a through and see if there is any difference in the response.

Looks like DHO1000 is 1MOhm + 19pF, slightly higher.
ebastler:
I received my DHO1074 today and decided that a quick pre-Christmas incoming inspection was in order.  :)

The unit I got (from Rigol Europe via Amazon) was manufactured in December 2022, calibrated in January, and still came with the original firmware 2.04. So as we suspected, these have not been flying off the shelves at list price...

After upgrading to firmware 2.11, self-calibration did a better job than it had before -- no more offset errors, which were up to 100 µV with the original firmware. I also managed to actually get 2 GSa/s sampling rate with the updated firmware, much to my relief -- acquisition always seemed to run at half the advertised rate before?!

Not sure what's going on with the options. The scope tells me I have "limited" 200 MHz and 100 MPts options, but they don't seem to be active at all? Anyway, I intend to un-limit them after Christmas...

The screen and LEDs are plenty bright for my taste and lighting conditions; I reduced the screen brightness to 75% and wish I could do the same for the LEDs. The optical encoders feel great and the UI's response to user interactions -- whether via the touch screen or controls -- is very smooth. So the scope fully lives up to the expectations I had based on videos.

I like the UI very much; the dual flex knobs with their dynamic change of function based on which dialog fields you touch works great for me. Startup time is only 30 seconds, quite a bit faster than the DHO800/900, presumably due to a faster CPU and/or flash disk.

Fan noise is the fly in the ointment for me. The dual fans are quite noisy indeed: I can't hear whether my SDG2042X is on or off when the DHO is running next to it, and that signal genererator is not the quietest of instruments. My Korad power supplies, when running under load, can get louder than the DHO  -- but that is not an ambitious comparison...

After Christmas I will definitely try the PWM adjustment to reduce the fan speed. For now, the scope is going back into its box and I will do my best to forget about it and be pleasantly surprised a month from now!  ;)
Martin72:

--- Quote --- I will do my best to forget about it and be pleasantly surprised a month from now!
--- End quote ---

 ;D

Boot time:

When I was looking for my old test posts from the 4204 in this thread yesterday, I also noticed that I had only measured just over half a minute back then.
It's not the CPU, it's the same for all 12 bit models (6-core), the memory too.
I also have to say that I measured a significantly longer time on the 804 on the first start than on the subsequent starts.
Maybe the scope has something "up its sleeve".
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