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| REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol |
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| marmad:
--- Quote from: EV on December 26, 2013, 11:43:29 am ---My old TEK TDS3032 has 2.5 GS/s and 5 samples per division with 1 ns time base. It is so regardlss whether both or only one channel is on. --- End quote --- But that doesn't make sense mathematically. If 2.5GSa/s is the maximum rate, 400ps is the smallest sample period. That would be 2.5 samples per div @ 1ns. 5 samples per div would require a 5GSa/s rate (200ps sample). |
| marmad:
--- Quote from: EV on December 26, 2013, 02:13:09 pm ---I do not know about the math, but look at the picture. --- End quote --- Math is math; there is no getting around it. Drawing dots on a display is something else. Either one of the following HAS to be true: 1) Your DSO samples at a maximum of 2.5G and it gets a sample every 400ps - and then, for whatever reason, it's doubling the number of actual sample points it draws on the screen. 2) Your DSO, for whatever reason, has the 5GSa/s rate of the TDS3052, and it gets a sample every 200ps. Then the number of points on the screen equals the actual real sampling rate. |
| Carrington:
--- Quote from: marmad on December 26, 2013, 03:15:29 pm ---Math is math; there is no getting around it. Drawing dots on a display is something else. Either one of the following HAS to be true: 1) Your DSO samples at a maximum of 2.5G and it gets a sample every 400ps - and then, for whatever reason, it's doubling the number of actual sample points it draws on the screen. 2) Your DSO, for whatever reason, has the 5GSa/s rate of the TDS3052, and it gets a sample every 200ps. Then the number of points on the screen equals the actual real sampling rate. --- End quote --- Maybe it's magic... No seriously, as Marmad says: "Math is math". |
| Carrington:
--- Quote from: marmad on December 25, 2013, 07:33:43 pm ---Well, I guess it's technically a bug - but in an unimplemented - and perhaps unfinished? - portion of firmware. So not very relevant. EDIT: BTW, does not happen when saving via RUU. --- End quote --- I agree is true, it is not relevant. RUU -> Superb work. :-+ |
| EV:
OK, I have deleted my posts. --- Quote from: Teneyes on December 26, 2013, 06:53:05 pm ---from Tek 3032B Manual Separate Digitizers. Ensure accurate timing measurements with separate digitizers for each channel. Each digitizer can sample at up to the maximum sample rate (2.5GSa/s); acquisition on all channels is always concurrent to provide full single-shot bandwidth on each channel. So IMO, Tek is combining samples from 2 channels, if so Let's deleted all this dicussion, Please --- End quote --- |
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