Author Topic: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol  (Read 1092600 times)

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Offline Lizerd

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #500 on: January 21, 2013, 10:35:34 am »
oh that was noisy :)
« Last Edit: January 21, 2013, 11:06:54 am by Lizerd »
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #501 on: January 21, 2013, 01:10:03 pm »
Hey look at this Noisy Waveform,  ;D

He he, you have uppgraded to DS2202.  :P
 

Offline Wim13

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #502 on: January 21, 2013, 05:24:06 pm »
Here a picture of 400 mhz on my 2072, in dots and vectors
 

Offline Wim13

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #503 on: January 21, 2013, 06:09:34 pm »
Here a nice picture if you approach half the sample rate
first picture 1 Gsa and the second 2 Gsa, nice alias
And the third picture the dots of the alias picture
 

Offline Wim13

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #504 on: January 21, 2013, 06:18:16 pm »
@ Teneyse

Here 3 pictures, 400 mhz stable on the display,
then the dots , they are moving, you normaly dont see that,
the dots re moving while the display is stable.
 

Offline Wim13

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #505 on: January 21, 2013, 08:13:41 pm »
@ Teneyes,

Three pictures, 200 mhz
1 is Dots
2 vectors
3 running

You can see that running gives some noise, because of the moving dots
In vectors single mode you see the distorted sinus.
Just in running mode you get the nice sinus.
« Last Edit: January 21, 2013, 08:15:26 pm by Wim13 »
 

Offline Wim13

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #506 on: January 21, 2013, 09:03:54 pm »
Some fun with the Rigol, 600 Mhz, picture in vector and dots.
The signal is 25 dB down on this frequency. But still some pictures.
For the relation of the vectors and the dots.

The counter is lost his mind, but the cursor gives the right frequency
which was on the signal generator 598.0 Mhz.
 

Offline marmadTopic starter

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #507 on: January 21, 2013, 09:14:32 pm »
@Teneyes, Wim13, EV:

Thanks for all the research, info, and posting! Great stuff - and very interesting!
 

Offline zibadun

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REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #508 on: January 22, 2013, 06:45:39 am »
some really nice looking screen captures up there!  :-+  ;)
« Last Edit: January 22, 2013, 01:07:39 pm by zibadun »
 

Offline kape

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #509 on: January 23, 2013, 07:28:20 pm »
Yet another happy DS2072 owner signing up:)
Initial impressions of the new scope are very good!

I considered for some time whether to buy this one or save some money and get a cheaper scope. I'm pretty confident that I don't have to regret my decision:)
And the big screen is really nice!

Bought my unit from drieg (Silcon Electronics, http://www.silcon.cz/). I can warmly recommend buying from him if you want good and fast product support!
 

Offline sanka

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #510 on: January 23, 2013, 08:43:15 pm »
Well, clearly there is some kind of screen saver bug,
For what it is worth, I filed a report at http://www.rigolna.com/tech-support/.  I want to see how responsive they are.
[...]
I should have some time next week to play with and learn the scope a little bit. I'll tweak some settings and report back if screensaver starts to work.

Well, I thought I'd play around with it today. But it turns out that the unit is defective. I couldn't get it to do the initial Probe Compensation Function Inspection, per Page 7 of the manual. I keep getting "Auto Failed" error messages.

Besides, there appears to be a screen related defect. At times, upon power up, it shows blue screens and a lot of noise. I could get it to eventually show normal screen after power cycling 4-5 times. But there is something evidently wrong with the unit.

I called Rigol NA in Ohio. A very helpful gentleman helped me debug it on the phone and concluded that a new unit will have to be sent out. He is arranging for the RMA and an Advance Exchange (i.e., he will send out a new unit before my unit reaches him).

Although the unit I received was defective, I got a chance to check out Rigol NA Support and they appear helpful and prompt.
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #511 on: January 23, 2013, 09:33:56 pm »

I called Rigol NA in Ohio. A very helpful gentleman helped me debug it on the phone and concluded that a new unit will have to be sent out. He is arranging for the RMA and an Advance Exchange (i.e., he will send out a new unit before my unit reaches him).

Although the unit I received was defective, I got a chance to check out Rigol NA Support and they appear helpful and prompt.

Thanks for your report!
 

Offline zibadun

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #512 on: January 24, 2013, 04:49:13 am »
I'm trying to figure out the SPI decode function and not having much luck (even with RTFM :(   Can you guys please help?

I captured the SDA - Ch1 and SCLK - Ch2,

rising slope, 2.74v threshold for SCLK
Reverse Polarity, 1.25v threshold for SDA

I guess this supposed to show 4 bits (1010 ?), but it doesn't.   What am I doing wrong?  |O
 

Offline flano

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #513 on: January 24, 2013, 05:27:43 am »
Hi Everyone,

Well done to all of the contributors to this thread, it has some great info which I have been following over time.

I received a new DS2202 in the mail today and I'm very impressed having come from a DS1102e.

Has anyone done much with the I2C trigger. I can get it to trigger on a Start condition however I don't seem to be able to get it to trigger on a Missing Ack or Address.

Has anyone else experienced this? It may well be user error or some sort of Software issue on the board that I'm using to test.

Thanks Mike
 

Offline marmadTopic starter

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #514 on: January 24, 2013, 05:57:09 am »
Has anyone done much with the I2C trigger. I can get it to trigger on a Start condition however I don't seem to be able to get it to trigger on a Missing Ack or Address.

@Mike: I haven't had more time to test the I2C trigger other than what I did in the review (which was triggering on a Start condition). I'll be back at my DSO in a couple of days and can test triggering on a NACK and some other conditions and let you know what I find.

@Vasily: Sorry, I haven't used the SPI decode at all - and don't have any SPI interfaces in my studio which I can test handily. Maybe someone else can help with this?
 

Offline marmadTopic starter

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #515 on: January 24, 2013, 06:13:48 am »
I am reporting a bug on 500uv only, where the display of the trace trigger point on the Center vertical graticule ( orange T arrow down)  is offset higher that then trigger level. This offset higher , is bigger at larger trigger Levels. See the Pics

Well, the first thing I would ask is whether the same thing happens at the 5ns timebase setting? Since you are... um... how shall I put it? ...using a timebase setting which is 'unavailable' on your model  :)
 

Offline marmadTopic starter

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #516 on: January 24, 2013, 06:26:46 am »
My options are EXPIRED, but still there..

This is a great find, Wim (and Teneyes) - nice work!
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #517 on: January 24, 2013, 06:37:41 am »
FW 1.00.02
@marmad  ,
   This is a repeat report, I connectted a low level signal to Channel 1 , & set 8 point averaging for cleaner trace. The vertical scale was set to 500uV. 
 I am reporting a bug on 500uv only, where the display of the trace trigger point on the Center vertical graticule ( orange T arrow down)  is offset higher that then trigger level. This offset higher , is bigger at larger trigger Levels. See the Pics
Can anyone confirm my testing??? 
This is a small bug.

Have you calibrated the scope? There can be offset if the scope has not been calibrated.
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #518 on: January 24, 2013, 08:15:33 am »
This may only occur on FW 1.00.02

There is No Offset on any other vertical scale.
There is No Offset when trigger level is 0.0. @ 500uV
The Trace does not offset, just the indication of the trigger point, IE the trace shifts to the left

DS2202, FW 1.00.05

Here are my pictures triggering Normal, Average 128 trig at 0 uV, Average 128 trig at 500 uV and Average 128 trig at 830 uV. If trig level is set bigger than 830 uV, the scope does not trig. Signal is 100MHz 2 mVpp sine. Note that average amplitude is rising up at trig point, when rising trig level. So scope is triggering to noise!?

Edit: Singnal is connected with BNC cable with feed thru 50 ohm terminator. There is offset at the last picture.
« Last Edit: January 24, 2013, 08:21:46 am by EV »
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #519 on: January 24, 2013, 11:27:40 am »

Yes Noise affects the trigger point ,
I am saying the bug is how the trigger point is displayed

At 1 mv , all is OK

There is also offset at 1 mV level. Here is 100 kHz 2 mVpp normal signal with BW 20 MHz. Triggering is possible between levels -390 uV and 1.31 mV. Outside this the scope does not trigger. In both pictures there is offset.
 

Offline orbiter

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #520 on: January 24, 2013, 01:26:19 pm »
Hiya friends,

Ok.. so I know 'Auto' is not the best way of setting-up a scope for measuring signals. However I was just fiddling around this morning when I wanted a quick
signal detection. So I presses the Auto button but it doesn't do much really, apart from switch on both channels and show a waveform that then needs manually triggering. On previous scopes I've had the scope at least makes a decent attempt at showing a triggered signal.

I hear the relays click etc, & the signals I'm measuring are well within Rigols specified/recommended minimum parameters e.g... 50Hz 20mVpp.

Is this the norm on the DS2072?

Thanks fellas 
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #521 on: January 24, 2013, 01:39:09 pm »
At least at 1mv/div  the Center and trigger line intersect on the Trace.

I think the offst  you are seeing is your 100KHS is modulated on a slower signal, like Mains power,
If you set Scan rate much slower , I think you'll see the higher Freq.  on a low Freq.

Maybe, but why it is not possible to move the trigger line more than 390 uV down? Up it can be moved 1.31 mV and then it is on the upper side of the signal. The possible movement is not symmetric.
 

Offline EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #522 on: January 24, 2013, 02:03:34 pm »
Is this the norm on the DS2072?

Yes, look at the bug 7 on the first post. There is no alt trigger, so AUTO is useful only for a signal on one channel and if there is an easy signal. I have not used it at all for a long time.
 

Offline orbiter

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #523 on: January 24, 2013, 02:46:37 pm »
Is this the norm on the DS2072?

Yes, look at the bug 7 on the first post. There is no alt trigger, so AUTO is useful only for a signal on one channel and if there is an easy signal. I have not used it at all for a long time.

Ah yes.. Thank you EV, & Marmad.
 

Offline kape

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #524 on: January 24, 2013, 04:21:15 pm »
Has anyone done much with the I2C trigger. I can get it to trigger on a Start condition however I don't seem to be able to get it to trigger on a Missing Ack or Address.

Has anyone else experienced this? It may well be user error or some sort of Software issue on the board that I'm using to test.

Thanks Mike

I tried the I2C triggers quickly today and they seem to work fine if you have correct settings.
I had a bit noisy I2C-lines and couldn't get trigger to missing ack/address at first. When I changed the trigger setting "Noise Reject ON", the triggers started working fine.
 


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