Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
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Wim13:

--- Quote from: Kobus on December 24, 2013, 08:15:15 pm ---Maybe I am missing something obvious. Is there some quick way to remove measurements from the bottom of the screen.
There are dedicated buttons for adding measurements but I cant find a quick way to clear them.

--- End quote ---

Measure => clear all items
Kobus:

--- Quote from: Wim13 on December 24, 2013, 08:17:50 pm ---
--- Quote from: Kobus on December 24, 2013, 08:15:15 pm ---Maybe I am missing something obvious. Is there some quick way to remove measurements from the bottom of the screen.
There are dedicated buttons for adding measurements but I cant find a quick way to clear them.

--- End quote ---

Measure => clear all items

--- End quote ---

That's what I have been doing. It is actually Measure => Clear => All items.

I just found it strange to have dedicated physical buttons for turning them on
and then a menu two levels deep to turn them off.
EV:
I did also tests with my originally DS2202 scope. The chart is done with manual sweep and the picture with automatic sweep. I have used HP 8642A generator which is connected with about 1.5 meter long RG58 cable using 50 ohm feed through terminator to the scope. Manual sweep gives BW about 300 MHz and automatic sweep about 310 MHz.

I have also measured Rise Times and noticed that if also Ch2 is on measured Rise Time increases about 0.1 ns (from 1.13 ns to 1.22 ns).


--- Quote from: Wim13 on December 24, 2013, 08:13:15 pm ---
Did some testing with the new FW, and updated my Bandwidth chart.
.
.

--- End quote ---
EV:
When doing the manual sweep the time base changes all the time and probably has been 1 ns when I have measured 300...350 MHz gain. I don't remember it anymore.

When using automatic sweep the time base is the same all the time (1s per division). So in the picture one division is 25 MHz when sweep time is 14 s.
ted572:

--- Quote from: Wim13 on December 24, 2013, 08:13:15 pm ---
Did some testing with the new FW, and updated my Bandwidth chart.

There is not much more bandwidth on a 2072 with option 300 Mhz, the entry
of the 2072 , the non A models, dont get 300 Mhz, mine goes to 280 Mhz.
The lack of a internal 50 ohm terminator...

Also got more noise, see picture with only 1 channel, and then enable channel 2,
the difference is clear, on 1 nS the sample rate is to low for two channels.
The performance is worse on 1 nS then on 2 nS.

I did the test with the DSGH key, see option picture.

So the advantage of the new bandwidth option is not big for the non A models.
You are better off with the 200 Mhz version. So use the DSEH key for better performance.

--- End quote ---
Is there any chance that that the additional noise/fuzz or whatever artifact is evident in the display with 'channel 2 also active' (New2.png)  is due to the that sample rate dropping from 2GHz down to 1GHz?  Probably not, but I just wanted to ask before giving up on the 300MHz BW for the DS2000 (for the non A anyway).

Also, I have been wondering for some time if going from 200MHz to 300MHz BW was detrimental, because it appeared to me that the increased Overshoot (with 300MHz BW) was likely due to the rising response around 115MHz of the 300MHz BW selection.

What condition is shown in picture 'New6' with the FFT?

Thank you for the very interesting and informative BW data you provided on the DS2000.

In conclusion, I understand that you believe now that 200MHz should be as high as we should go for the DS2000 'non A' version?
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