Author Topic: Rigol DHO814 Ultraacquire not ultra...  (Read 9872 times)

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Offline eTobeyTopic starter

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Rigol DHO814 Ultraacquire not ultra...
« on: March 13, 2024, 07:50:12 pm »
I find this feature quite nice, until just now i tried it out for the first time.

I wanted to capture some rather slow reset signals, so i tried it first with creating signals by tapping the probe on 3V by hand.

My understanding is, that it will take x captures or x seconds before it displays the curves. (Unfortunately the timeout only goes to 1s!  |O)
While trying it by hand, i found, that it will just randomly copy curves sometimes even 5 times (!).

There cant be hardware or software limitations, that it can only go to 1s can there? It does not matter how many samplepoints i set.

I somehow got the feeling, that not much time has been put into testing this product, before it hit the market...
"Sometimes, after talking with a person, you want to pet a dog, wave at a monkey, and take off your hat to an elephant."(Maxim Gorki)

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Online csuhi17

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #1 on: March 13, 2024, 09:33:24 pm »
This function is so buggy for me, that's why I gave it up.
the software freezes several times.
Fnirsi oscilloscope = waste&regret
 
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Online ebastler

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #2 on: March 13, 2024, 09:36:32 pm »
I'm afraid "UltraAquire" is just a marketing ploy, designed to enable Rigol to put high waveforms/second figures and a "unique feature" into the datasheet. It is not meant to be actually used. :-\
 
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Offline thm_w

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Online Martin72

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #4 on: March 13, 2024, 10:00:50 pm »
Quote
I find this feature quite nice, until just now i tried it out for the first time.

I had tried it umpteen times, in different variations and came to no conclusion, except that, as ebastler already wrote, it must be a gag.
 
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Offline eTobeyTopic starter

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #5 on: March 13, 2024, 11:18:14 pm »
I tried the record feature now. That works quite a bit better, but either its not intuitive, are as buggy as the Ultrastuff.

Mostly i dont see curves with the record feature, i may read the manual there...

I was so delighted to have gotten this scope, just like a child at christmas. But now i begin to feel like i got some socks and other clothing as a gift!
"Sometimes, after talking with a person, you want to pet a dog, wave at a monkey, and take off your hat to an elephant."(Maxim Gorki)

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Online egonotto

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #6 on: March 13, 2024, 11:25:28 pm »
Hello,

I have a DHO1074 and there this function is not very useful. I tried to capture a signal every 5 ms and there are gaps. And to make matters worse, you can't save it.

Best regards
egonotto
 

Online 2N3055

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #7 on: March 14, 2024, 07:39:08 am »
UltraAcq IS useless gimmick.
Except quite decent performance of ADC and front, the rest of the scope is not much better than a gimmick either...
"Just hard work is not enough - it must be applied sensibly."
Dr. Richard W. Hamming
 

Offline eTobeyTopic starter

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #8 on: March 14, 2024, 03:50:29 pm »
... the rest of the scope is not much better than a gimmick either...

I can affirm that. I tried to use the record feature, which in theory is actually epic. But its as useless as the ultra-useless feature, because waveforms are not visible, or do not scale when scaling. The UI for this is embarrasing. You have buttons that you can use, but these are disabled.

I did not read the manual for the record, but i dont think i will find something that would really help judging from the experience of others here...
"Sometimes, after talking with a person, you want to pet a dog, wave at a monkey, and take off your hat to an elephant."(Maxim Gorki)

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Offline Caliaxy

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #9 on: March 14, 2024, 04:57:29 pm »
... the rest of the scope is not much better than a gimmick either...

I can affirm that. I tried to use the record feature, which in theory is actually epic. But its as useless as the ultra-useless feature, because waveforms are not visible, or do not scale when scaling. The UI for this is embarrasing. You have buttons that you can use, but these are disabled.

I did not read the manual for the record, but i dont think i will find something that would really help judging from the experience of others here...

^^^ Assessment coming from an EEV blog member who
  • owns the device but doesn't read the manual,
confirmed by another EEV blog member who
  • reads the manual but doesn't own the device
Fair enough  ;D ;D ;D
 
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Offline Randy222

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #10 on: March 14, 2024, 05:42:43 pm »
Rigol 1-up'd the other brand, so a longer feature list.

Being useless is not a metric they measure.
;)
 

Online 2N3055

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #11 on: March 14, 2024, 07:58:45 pm »
... the rest of the scope is not much better than a gimmick either...

I can affirm that. I tried to use the record feature, which in theory is actually epic. But its as useless as the ultra-useless feature, because waveforms are not visible, or do not scale when scaling. The UI for this is embarrasing. You have buttons that you can use, but these are disabled.

I did not read the manual for the record, but i dont think i will find something that would really help judging from the experience of others here...

^^^ Assessment coming from an EEV blog member who
  • owns the device but doesn't read the manual,
confirmed by another EEV blog member who
  • reads the manual but doesn't own the device
Fair enough  ;D ;D ;D

Commented by member who does not exactly understand what is being commented.. :-DD
We are quite a bunch, aren't we.. :-DD

FastAcq is useless gimmick. Nobody ever demonstrated what it is used for, and in that mode nothing can be used: no measurements, no decode, nothing.. It only puts some wiggles on screen. In several "special" display modes that are pretty much not useful at all.
It is just a gimmick to claim high Wfms/s and to have "another feature".

"Just hard work is not enough - it must be applied sensibly."
Dr. Richard W. Hamming
 
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Online Martin72

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #12 on: March 14, 2024, 08:48:30 pm »
High update rates are said to be useful for detecting rare signal anomalies, among other things.
I had tried this with different random pulses in the signal over time.
I always detected them reliably with the corresponding trigger mode in the normal acquisition mode of the scope.
But never in this UA mode, on the contrary, all you could see was a bunch of lines
 
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Offline eTobeyTopic starter

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Re: Rigol DHO814 Ultraacquire not ultra...
« Reply #13 on: March 14, 2024, 10:07:32 pm »
But never in this UA mode, on the contrary, all you could see was a bunch of lines
When using UA with 200ms signals, it often just copies them multiple times. Who can tell me, that it does not do this with faster/more frequent signals, and discarding those, that i am looking for actually?

BTW: I found out, that the actually use alot of Opensource software. I got the feeling, that they just had some students puzzling these together.
"Sometimes, after talking with a person, you want to pet a dog, wave at a monkey, and take off your hat to an elephant."(Maxim Gorki)

SDS800X HD issues/tips/workarounds
 
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