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| The Rigol DS1052E |
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| pheller:
--- Quote from: scrat on October 01, 2010, 07:59:55 pm ---Single mode allows the scope for a single trigger to be activated. So it could be called "one-shot", in other words it waits for the trigger and then acquires data until it reached the end of the screen or the end of the memory. Now I haven't one by hand, but I think it should acquire one screenshot, since by setting the sampling rate (or the timebase, if the ratio between these two is automatically set by the scope) you can decide how much time you'd like to record. It is used for seeing rare events, or events that are each different one from the others, even if they all could activate the trigger For example, if you want to see the response of a program on an MCU to the first time it receives a byte on the UART, you can set trigger mode on "single", falling edge trigger on the RX signal and a proper timebase, so that the screen contains the whole response of your interest. If on the UART there will be other data after the first byte, and if you were on "auto" or "normal" mode (instead of "single" you will see the series of the various responses together, so not letting you see how the first was. --- End quote --- Thanks for the response. I had also thought it might capture to fill the memory (or enough memory to fill the screen, based on horizontal timebase), but I'm a newbie with a scope, so wasn't sure. I'll give it a go tomorrow to verify the operation. Thanks! --phil |
| Fraser:
I have just completed a strip down of my DS1052E - Hardware Version 58. Purchased in September. It was an investigation into an impact sensitivity problem that the scope had. It turned out to be loose screws and BNC nuts ! Whilst investigating the problem I had a good look around the motherboard and did not see any differences to the pre HW58 model so any that are present are minor. The CH1 & CH2 input circuits appear to be the same. They still have the varicap diode based bandwidth limiter and no effort has been made to deter a hardware modification. (not that such is now needed). What may be interesting to some is the fact that the usual IC's have been anonymised by removal of their ID markings but my scope contains IC's that appear to have been sand blasted in a very professional manner. A neat little abraded square is present on the chips rather than the usual Dremmel grinder aftermath. Very neatly done and very effective as no remnants of the chip ID remain. Build quality is still good, with good component placement and quality soldering but PCB 'hygiene' is poor as evidenced by finger prints and detritus on the top and bottom of the PCB (this scope is brand new). Not great but no big issue for me as the unit now works well. UPDATE: Pictures have been added. I have just looked at the pictures of the earlier Rigol DS1052E SMPSU and compared them to mine. There is a difference. It would appear that the high voltage CCFL power supply has now been deleted. This would suggest that the newer DS1052E may have an LED backlight for the LCD panel. I have not, however, proven this by test. |
| rf-loop:
--- Quote from: Aurora on October 21, 2010, 11:40:40 pm --- What may be interesting to some is the fact that the usual IC's have been anonymised by removal of their ID markings but my scope contains IC's that appear to have been sand blasted in a very professional manner. --- End quote --- They use laser. |
| saturation:
Kudos Aurora, to a great job. More to follow as I 've time to digest details. |
| EECrAZY:
From the pics, looks like later versions have a mechanical AC/DC coupling relay instead of a solid state one. Another difference I noticed, input FET transistor marking changed from āK51ā to ā6Uā which is MMBFJ309LT1. Part number with k51 marking was unknown. Thank you Rigol for giving us another part number I am curious if anyone figured out the part number for the buffer op amp right after VGA? And what is that analog support circuitry is supposed to do? As far as I found out, there is a high speed comparator there, a couple analog multiplexors and a bunch of low speed P274 dual opamps if I am looking at the right part for IC with p274 marking. I am trying to have a more in depth picture of what makes this beast tick and would appreciate any input |
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