Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
thm_w:
--- Quote from: Hydrawerk on April 16, 2013, 08:38:14 pm ---What's DS2000-S series?
Anyway, I like the DS2000's easy replaceable fuse. Most scopes have the fuse inside, often even solderer (Tek DPO2000, DSOX2000...)
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Looks like a 25MHz signal generator added internally to the DS2000: http://cn.rigol.com/download/China/DS/Datasheet/DS2000_DataSheet_CN.pdf
Translated specs:
--- Quote ---Number of Channels 2
Sampling rate 200MSa / s
Vertical resolution of 14bits
Maximum frequency of 25MHz
Standard waveforms sine, square wave, pulse, triangle wave, noise, DC
Arbitrary Waveform Sinc, the index rose, the index fell, ECG, Gauss, haversine
The sinusoidal frequency range from 0.1Hz to 25MHz
Flatness of ± 0.5dB (relative 1kHz)
Harmonic distortion of-40dBc
Spurious (non-harmonic)-40dBc
1% total harmonic distortion
Signal-to-noise ratio 40dB (TBD)
Square / pulse frequency range of 0.1Hz to 15MHz
Rise and fall time <15ns
Overshoot <5%
Duty cycle of 10-90%
Duty cycle resolution of 1% or 10ns (whichever is the greater value)
The minimum pulse width of 20ns
Pulse width resolution of 10ns or 5 (whichever is the larger value)
Jitter 500ps
Triangle wave frequency range of 0.1Hz to 100kHz
Linearity 1%
Symmetry 0-100%
Noise bandwidth of 25MHz (typ)
Arbitrary wave frequency range of 0.1Hz to 10MHz
Waveform length 2 ~ 16k points
Internal storage of 4
Frequency accuracy of 100ppm (less than 10kHz) 50ppm (greater than 10kHz)
Resolution of 0.1Hz or 4, whichever is greater
The amplitude output range 20mVpp ~ 5Vpp, high impedance 10mVpp ~ 2.5Vpp, 50ohm
The resolution 100uV or 3, whichever is the greater value
Accuracy of 2% (1kHz)
DC offset range ± 2.5V, high impedance ± 1.25V, 50ohm
The resolution 100uV or 3, whichever is the greater value
Accuracy of 2% (1kHz)
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marmad:
--- Quote from: thm_w on April 16, 2013, 09:19:52 pm ---Looks like a 25MHz signal generator added internally to the DS2000:
--- End quote ---
Dual channel AWG - nice! ;D Also, nice find - thm_w - thanks! I just started a new thread with this info since I think many people will be very interested.
Galaxyrise:
--- Quote from: marmad on April 15, 2013, 10:39:23 pm ---Seriously? You think that's how the image would look if connected with straight line segments? With 5 sample points per division? ;D Well, here it is for you - un-interpolated. Print it out, get out a ruler and pencil, and give it a go ;)
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What? Of course seriously! Did you think I was trolling you or something?
The peaks are the only part where the curve would be obvious in your capture, and many of them are oddly straight with harsh changes in slope. So I did what you suggested, more or less. I took your image into a paint program, drew vertical grid lines every 10 pixels (as measured for your dots display), lined up the grid lines with the non-smooth parts of the wave (they do coincide), and played around drawing lines. The peaks obviously aren't pointy enough, but If those lines just continued straight for a few more pixels then the whole thing would basically be straight line segments.
It would have been a lot clearer with a square-er aspect ratio per period, I think.
--- Quote ---
--- Quote ---...and it looks a bit funny for a perfect sin.
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There is no such animal.
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I guess that's what it boils down to! I was expecting that the interpolation's synthetic sine would be pretty faithful, but I guess there's some rounding or error accumulation or whatever that causes it to flatten up at that aspect ratio. Interestingly, Teneyes' 6pt has just a couple pixels more per period, but the sine looks much better.
marmad:
--- Quote from: Galaxyrise on April 16, 2013, 10:49:06 pm ---The peaks obviously aren't pointy enough, but If those lines just continued straight for a few more pixels then the whole thing would basically be straight line segments.
--- End quote ---
I just took the sample points image into Photoshop and connected the first few segments. I don't really think you could mistake the difference between this and sin(x)/x interpolation - although granted, it would perhaps be more obvious if the sine wave cycles were bigger (shorter timebase).
EEVblog:
--- Quote from: marmad on April 16, 2013, 09:12:49 pm ---I'm not sure if the DS6000 Demo Board has been mentioned before on EEVBlog or not (a quick search didn't turn up anything), but I found it at Batronix while searching for any possible new UltraVision products - and I hadn't seen it before and thought it was kind of interesting. It lists at €163 / $225 (excl.), and I've attached the user guide below.
--- End quote ---
Rigol are supposed to be getting me one of those, looks interesting.
They should most certainly get you one too!
I also have a Tek MSO demo board.
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