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| Need a scope, Is vertical sensitivity important? |
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| nctnico:
Stay clear from isolation transformers. Better get a high voltage differential probe and a 1:100 passive probe. Back in the old days (>20 years ago) I have repaired lots of CRT monitors myself and a simple analog scope has always been enough to figure out what was going on. A 'hot chassis' is something from a very distant past but it is a good idea to investigate which part of the board is connected to mains and which part isn't. Typically this is made very clear on the board. Nowadays a simple DSO will do just fine. Only 'problem' I find with modern DSOs is that they typically don't have a 20V/div setting. If you want a neat portable DSO, then make sure to look at the ones from MicSig. They also have special automotive models. |
| james_s:
--- Quote from: nctnico on December 07, 2022, 11:29:14 pm ---Stay clear from isolation transformers. Better get a high voltage differential probe and a 1:100 passive probe. Back in the old days (>20 years ago) I have repaired lots of CRT monitors myself and a simple analog scope has always been enough to figure out what was going on. A 'hot chassis' is something from a very distant past but it is a good idea to investigate which part of the board is connected to mains and which part isn't. Typically this is made very clear on the board. Nowadays a simple DSO will do just fine. Only 'problem' I find with modern DSOs is that they typically don't have a 20V/div setting. --- End quote --- Hot chassis TVs were made right up into the end of the CRT era, mostly cheap sets, a good clue is they have no headphone jack. Even on sets that have a proper SMPS it is often integrated into the main board so there will still be live earth referenced stuff in the vicinity. |
| tautech:
--- Quote from: deezdrama on December 07, 2022, 09:44:37 pm --- --- Quote from: tautech on December 07, 2022, 07:29:26 pm --- --- Quote from: mwb1100 on December 07, 2022, 06:50:16 pm ---You might also consider the SDS1052DL+, available on Amazon US for about $250 at the moment: - https://www.amazon.com/Siglent-Technologies-SDS1052DL-Digital-Oscilloscope/dp/B01J16NV54 It's only 50MHz, but maybe it's enough for what you need? It's not clear to me how hackable it is, but there's some indication: - https://www.eevblog.com/forum/testgear/siglentsds1052dlsds1102cmlhack/msg2731812/#msg2731812 I think it's the lowest-end of what Siglent currently offers for bench scopes. But if you can stretch your budget to the SDS1202X-E - that's a far superior oscilloscope than the SDS1052DL+ --- End quote --- 100% endorse all of this ^ SDS1052DL+ will be the easier to learn with however as one advances it's minimal feature set might not meet future requirements whereas the 2ch X-E will certainly be a better match as skills grow. deezdrama Look up Defpom on YouTube as he reviewed a DL+ a couple weeks back for us. --- End quote --- Thanks guys this helps alot. I grabbed an open box 1052DL+ on amazon for $170.... Hopefully its not missing the probe or anything. Are these possible to run off a battery pack? --- End quote --- It should come with a pair of PB470 switchable 1x/10x probes as outlined in the Siglent probe listing: https://siglentna.com/wp-content/uploads/dlm_uploads/2022/08/Probe_List_008102022.pdf Also check it has the latest firmware installed and update from here as required: https://int.siglent.com/download/firmwares/?ProId=42 Btw, you nicely nabbed a good saving at that price of over $ 100 ! |
| deezdrama:
--- Quote from: tautech on December 08, 2022, 01:18:44 am --- --- Quote from: deezdrama on December 07, 2022, 09:44:37 pm --- --- Quote from: tautech on December 07, 2022, 07:29:26 pm --- --- Quote from: mwb1100 on December 07, 2022, 06:50:16 pm ---You might also consider the SDS1052DL+, available on Amazon US for about $250 at the moment: - https://www.amazon.com/Siglent-Technologies-SDS1052DL-Digital-Oscilloscope/dp/B01J16NV54 It's only 50MHz, but maybe it's enough for what you need? It's not clear to me how hackable it is, but there's some indication: - https://www.eevblog.com/forum/testgear/siglentsds1052dlsds1102cmlhack/msg2731812/#msg2731812 I think it's the lowest-end of what Siglent currently offers for bench scopes. But if you can stretch your budget to the SDS1202X-E - that's a far superior oscilloscope than the SDS1052DL+ --- End quote --- 100% endorse all of this ^ SDS1052DL+ will be the easier to learn with however as one advances it's minimal feature set might not meet future requirements whereas the 2ch X-E will certainly be a better match as skills grow. deezdrama Look up Defpom on YouTube as he reviewed a DL+ a couple weeks back for us. --- End quote --- Thanks guys this helps alot. I grabbed an open box 1052DL+ on amazon for $170.... Hopefully its not missing the probe or anything. Are these possible to run off a battery pack? --- End quote --- It should come with a pair of PB470 switchable 1x/10x probes as outlined in the Siglent probe listing: https://siglentna.com/wp-content/uploads/dlm_uploads/2022/08/Probe_List_008102022.pdf Also check it has the latest firmware installed and update from here as required: https://int.siglent.com/download/firmwares/?ProId=42 Btw, you nicely nabbed a good saving at that price of over $ 100 ! --- End quote --- Thanks for the links Ill update when I get it. Yeah i seen it that cheap and jumped on it, hell thats the same price as the aliexpress toy scope i thought about getting lol |
| deezdrama:
Just got the scope in. No box but looks to be complete. Whats the best signal sources I can use to learn on this with? Should I get a cheap signal generator? |
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