| Richard Erlacher 07/05/12 10:53 Read: 254 times Denver, Co USA |
#187861 - So, how are you exercising this new 'scope? Responding to: Mahmood Elnasser's previous message |
Did you build one of those circuits you discussed? How's the triggering? Do you have an attenuator on the output of your circuit so you can reduced the amplitude? How sensitive is this 'scope, i.e. what's the smallest voltage per division that it can reliably display? Can it trigger on short pulses of that magnitude? How about slowly rising waveforms, i.e. a waveform that rises at 1 volt/ms? Does it provide a crisp, clear display, or is it muddied by variations in the trigger voltage? (Nearly any instrument will have some ambiguity in its triggering.) How does it compare in these regards with respect to your old TEK 475?
What sort of probes did they provide, if any? Are they switchable 1x/10x types? Does the instrument recognize the impedance setting? There's lots of experimentation ahead, before you'll know what the 'scope really does, and how well. Have fun! RE |
| Topic | Author | Date |
| DSO for cheap! | Joseph Hebert | 05/11/12 13:35 |
| very good | Mahmood Elnasser | 05/11/12 14:14 |
| Limitations | Joseph Hebert | 05/12/12 09:49 |
| test results | Mahmood Elnasser | 05/12/12 12:46 |
| That's valuable information | Joseph Hebert | 05/12/12 13:30 |
| well, the fact is .. | Richard Erlacher | 06/03/12 11:43 |
| tektronix 475 comparison | Mahmood Elnasser | 06/07/12 10:37 |
| Really? Why? | Richard Erlacher | 06/07/12 14:51 |
| another double post ... sorry | Richard Erlacher | 06/07/12 14:51 |
| I think ... | Erik Malund | 05/11/12 14:34 |
| Application dependant | Mahmood Elnasser | 05/12/12 05:55 |
| Indeed | Andy Neil | 05/12/12 09:10 |
| It's still too low a bandwidth, wouldn't you say? | Richard Erlacher | 06/03/12 11:50 |
| just curious, Joe could you try | Erik Malund | 05/11/12 14:36 |
| Unusual with short pulses for hobbyist projects | Per Westermark | 05/11/12 14:53 |
| is the clock running? | Erik Malund | 05/11/12 16:01 |
| Sorry, but no I can't. | Joseph Hebert | 05/11/12 16:42 |
| 10nSec Pulse | Mahmood Elnasser | 05/12/12 12:59 |
| "at random" means what exactly ? | Jim Granville | 05/13/12 18:41 |
| Answers | Mahmood Elnasser | 05/14/12 07:41 |
| more observations | Mahmood Elnasser | 06/03/12 10:51 |
| It may not be the sample rate ... | Richard Erlacher | 06/07/12 15:07 |
| digital vs analog | Mahmood Elnasser | 06/08/12 15:34 |
| Don't get me wrong, here ... | Richard Erlacher | 06/08/12 21:34 |
| poor mans's scope | Mahmood Elnasser | 06/09/12 02:01 |
| Doesn't it depend on what THEY mean by bandwidth? | Richard Erlacher | 06/09/12 20:58 |
| 20 nsec steps | Mahmood Elnasser | 06/09/12 23:08 |
| Well, one thing at a time ... | Richard Erlacher | 06/10/12 11:43 |
| Impulse Tests are better | Jim Granville | 06/10/12 16:49 |
| more capable scope | Mahmood Elnasser | 06/11/12 14:03 |
| I must have missed a step ... | Richard Erlacher | 06/12/12 08:07 |
| TEK475 | Mahmood Elnasser | 06/12/12 16:16 |
| here's another alternative ... | Richard Erlacher | 06/12/12 22:16 |
| DAC and pot in parallel? | Per Westermark | 06/13/12 01:07 |
| Logically, not physically | Richard Erlacher | 06/13/12 07:57 |
| new theory | Mahmood Elnasser | 06/14/12 00:57 |
| 3MHz is rather poor Bandwidth ? | Jim Granville | 05/11/12 16:51 |
| ordinary | Erik Malund | 05/11/12 17:20 |
| Ther are many params needed | Jim Granville | 05/11/12 18:21 |
| "only" $200 ? | Andy Neil | 05/11/12 23:59 |
| Low cost oscilloscopes | Andy Neil | 05/12/12 09:18 |
| £291 > 2*($199) | Joseph Hebert | 05/12/12 09:45 |
| It doesn't always work that way | Andy Neil | 05/12/12 10:48 |
| Once upon a time ... | Joseph Hebert | 05/12/12 13:28 |
| SDS8202 | Mahmood Elnasser | 06/14/12 13:58 |
| Read all the "fine print' first ... and ask any questions | Richard Erlacher | 06/14/12 20:31 |
| bought it | Mahmood Elnasser | 06/16/12 03:07 |
| Please let us know how this works out for you | Richard Erlacher | 06/16/12 04:19 |
| datasheet | Mahmood Elnasser | 06/16/12 05:26 |
| 2mV/div - but min trig level? | Per Westermark | 06/16/12 07:01 |
| Tests | Mahmood Elnasser | 06/16/12 09:55 |
| 24ns | Per Westermark | 06/16/12 11:09 |
| and that's the crux | Erik Malund | 06/16/12 11:41 |
| FPGA pulse Expander (edited) | Mahmood Elnasser | 06/16/12 12:06 |
some love the mother, some love the daughter  | Erik Malund | 06/16/12 12:13 |
| Here's omne fairly simple thing ... | Richard Erlacher | 06/16/12 15:22 |
| self calibtrate? | Jim Granville | 06/16/12 20:42 |
| interesting | Mahmood Elnasser | 06/16/12 23:01 |
| yes | Jim Granville | 06/16/12 23:15 |
| glurk | Jez Smith | 06/17/12 13:33 |
| DCMs | Mahmood Elnasser | 06/17/12 14:49 |
| Well.... | Jez Smith | 06/17/12 15:48 |
| I don't know where you're going with this ... | Richard Erlacher | 06/17/12 21:25 |
| xxxxx | Mahmood Elnasser | 06/20/12 12:53 |
| 333ps | Mahmood Elnasser | 06/18/12 00:59 |
| SDS9302 | Mahmood Elnasser | 07/05/12 10:32 |
| So, how are you exercising this new 'scope? | Richard Erlacher | 07/05/12 10:53 |
| so far so good | Mahmood Elnasser | 07/08/12 09:45 |
| So far so good ... | Richard Erlacher | 07/08/12 10:49 |
| rise time | Mahmood Elnasser | 08/15/12 13:28 |
| The rise time indicates that high frequencies gets dampened | Per Westermark | 08/15/12 16:26 |
| What does "bandwidth" mean? | Richard Erlacher | 08/15/12 17:45 |
| good test | Mahmood Elnasser | 08/30/12 15:09 |
Perhaps you should repeat the test ...  | Richard Erlacher | 08/30/12 23:08 |