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| Ridiculously small Rigol DS1000z series font size |
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| marmad:
--- Quote from: markone on February 03, 2016, 07:44:04 pm ---I made some check on waveform capture rate under continuos screen transfer load, what happens is that the "blind time" sometime grows (7.5ms to 25ms) while the capture burst maintain its frequency, around 17 Khz. --- End quote --- I guess you used quotes because you know that's not really the blind time, right? --- Quote ---Useless to say, scope screen on PC monitor is waaay more clearer, not only for size but also due to pixel sharpness and you have visually lots of waveforms in it, way more than what is achievable with waveform data transfer. --- End quote --- I can imagine it might be good for very slow moving waveforms - since all of the waveforms you are seeing are 250 - 400ms old. EDIT: So, assuming a constant rate as shown in the screen shots, in the first example, your DSO is averaging approx. 14.6k wfrm/s - in the second example, the rate has dropped to approx. 10.6k wfrm/s (although with 25ms gaps at ~15Hz). |
| markone:
--- Quote from: marmad on February 03, 2016, 09:22:24 pm ---I guess you used quotes because you know that's not really the blind time, right? --- End quote --- Exactly. --- Quote from: marmad on February 03, 2016, 09:22:24 pm ---EDIT: So, assuming a constant rate as shown in the screen shots, in the first example, your DSO is averaging approx. 14.6k wfrm/s - in the second example, the rate has dropped to approx. 10.6k wfrm/s (although with 25ms gaps at ~15Hz). --- End quote --- Not all the gaps grow to 25ms under load, some remain almost at "unload" width, the capture rate loss is smaller (see attached image). I agree, 3 FPS are sadly not enough but now i'm starting to wonder which correlation exist between gap rate (about 20Hz) and scope lcd panel update rate (not waveform capture rate). My bet is that is on par, during the gap time interval the FPGA writes the lcd controller frame buffer, so 20Hz screen update, at least for waveform graph section. |
| markone:
Well, i made a couple of tests in order to understand at which rate my DS1074Z refreshes the lcd screen panel waveform section content, what i found seems to confirm what i was thinking, i have around 20 FPS @ 5ns - 12K setting. First one : i recorded some short movies of the screen with my panasonic SD700 @ 1920x1080 50p, so i converted them in a png sequences then i visually checked every frame, there is one actual screen update about every 2 movie frames. Second one (unscientific & subjective) : i built some animated GIFs with sequences of screen captures (made with RigolBildschirmkopie) at difference frame rate, the ones that more replicate the real screen scope "experience" are around 20-25 FPS. It should be necessary a faster video recorder for an accurate measurement but i do not own one, anyway i feel that those number are quite correct. In attachment an animeted GIF @ 25 frame per second, visually quite similar to what i see on the scope screen refresh rate wise, obviously its content is not correct due to skipped frames. |
| aneevuser:
--- Quote from: TomThomas on January 28, 2016, 03:47:18 pm --- Hi, the latest Firmware offers large and EXTRA large font only for Measurements but better than nothing. Measure -> 2nd Menu -> Font Size Regards Tom --- End quote --- Thank the Lord for the interwebs. I've been driven crazy by this font problem for ages, and finally stumbled across this response. The larger fonts are a great improvement. But given that it's taken me about 3 years to find it, it says something about the efficacy of menu driven systems compared to the old style all-on-the-front-panel setup - and what's more, I also discovered next to the Font Size menu, another menu where you can turn off display of selected measurements. I must RTFM one day. I apologise for the zombie revivification. |
| ebastler:
--- Quote from: aneevuser on July 17, 2022, 10:36:32 am ---But given that it's taken me about 3 years to find it, it says something about the efficacy of menu driven systems compared to the old style all-on-the-front-panel setup --- End quote --- To be fair, a front panel with direct controls for all the functions of a modern digital scope would be absurdly large and expensive to make, and not all that user-friendly either. Three-position toggle switch for font size, anyone? But it would certainly be good to impress your friends with a full airplane cockpit look. ;) |
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