0 Members and 5 Guests are viewing this topic.
Quote from: Wim13 on December 25, 2012, 05:56:51 pm...and between the 2202 is the 2 nsec timebase.And the 100MHz BW limit setting - which you would think would be set "ON" all the time on the 2072/2102.
...and between the 2202 is the 2 nsec timebase.
Quote from: marmad on December 25, 2012, 06:01:26 pmQuote from: Wim13 on December 25, 2012, 05:56:51 pm...and between the 2202 is the 2 nsec timebase.And the 100MHz BW limit setting - which you would think would be set "ON" all the time on the 2072/2102.don't give rigol any ideas I do know FFT function on 2072 works way way beyond 70 Mhz (posted a picture somewhere above)
Quote from: zibadun on December 25, 2012, 07:55:49 pmI do know FFT function on 2072 works way way beyond 70 Mhz (posted a picture somewhere above)The FFT is just calculated from the samples, and goes uo to 3.5 Ghz. Depends on the selected timebase.And Rigol knows what it is shipping, if you are selling test equipment, you can count on it that they will check the specs..search for the limits.
I do know FFT function on 2072 works way way beyond 70 Mhz (posted a picture somewhere above)
These hacks or rumours of such on Rigol must have a fantastic marketing effect. Surely they sell more scopes this way, and get a lot of PR. I bought a DS2022, because so many people in this forum said the brand was good. I would guess it would have been less well known without the earlier 50 to 100 mhz hacks on the older scope.
It's not just because people say so - look at Dave's video tearing down one of the DS2000s. Beautifully made inside - and it's the same with their latest series of AWGs and SAs.
Quote from: Wim13 on December 25, 2012, 08:16:37 pmQuote from: zibadun on December 25, 2012, 07:55:49 pmI do know FFT function on 2072 works way way beyond 70 Mhz (posted a picture somewhere above)The FFT is just calculated from the samples, and goes uo to 3.5 Ghz. Depends on the selected timebase.And Rigol knows what it is shipping, if you are selling test equipment, you can count on it that they will check the specs..search for the limits.I do think that the FFT is perhaps the one area that's a little feeble on the DS2000 series. It doesn't matter to me all that much - since it's relatively feeble on most low cost DSOs - and there are so many other great features (50k wfrm/s capture, segmented memory with histogram analysis, 500uV scale, hi-res mode, measurement history graphs, 2GSa/s sampling, etc) to offset that
I have a question about 8 vs 12 bit. I bought ds2022 thinking it was 12 bit, because many sites say this. Now, I am confused. Is it only 8 bit, but has some sort of averaging that supposedly makes it more accurate by considering many 8 bit samples?
Quote from: larsie on December 26, 2012, 02:04:18 pmI have a question about 8 vs 12 bit. I bought ds2022 thinking it was 12 bit, because many sites say this. Now, I am confused. Is it only 8 bit, but has some sort of averaging that supposedly makes it more accurate by considering many 8 bit samples?I think there are some DSP tricks (i.e. I don't understand the math ) during down sampling that can increase the effective bit depth of the ADC. the sampling rate has to be set to lower than 2 GSa/s in order to get the extra bits of resolution.
note, The probes which come with the scoop are useless above 30 Mhz.
I'm curious if they're rated 1x/35MHz - 10x/350MHz (or something like that)
Bandwidths are 1X/8MHz and 10X/350MHz. Rise times are 1X/40ns and 10X/900ps.
Quote from: EV on December 27, 2012, 04:35:30 pmBandwidths are 1X/8MHz and 10X/350MHz. Rise times are 1X/40ns and 10X/900ps.@EV: are these the written specifications - or tested by you?
They are from specs. I made some tests with Rigol DG4162 generator:Sweep is from 1Hz to 160 MHz (there is no bigger value) with sweep time 1.4 sec.