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| 2-Channel 10OMHz Oscilloscope Rigol DS1102Z-E or Siglent SDS1102CML |
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| radiohomebrewer2000:
Hello, Which oscilloscope is better for someone who has not used an oscilloscope? Rigol DS1102Z-E Siglent SDS1102CML Both are 100 MHz 2-channel Oscilloscopes. Right now, Amazon has the Rigol DS1102Z-E for US$279. A few days ago, it was $329. Amazon has the Siglent SDS1102CML for $319. I am not committed to Amazon. Just a place I have been looking. I am trying to work my way through the Problems (Lab Exercises) in the book Electronics of Radio by David Rutledge. I will be building the Norcal 40A Transceiver. I have most of the parts. Many of the problems in the book use an oscilloscope and a arbitrary wave form generator. I have a multimeter and antenna analyzer. I still need to get all the BNC connectors, adapters, cables, tee, etc. This is fine because many QRP hams use BNC instead of UHF (PL259/SO239) RF connectors. For the longest time, I have been using the UHF connectors unless the device came with SMA or N connector(s). I may go cheap on the signal generator for about US$100 you can find on ebay, amazon, and aliexress. However, I want a good oscilloscope for the beginner. I looked at Hantek earlier, but then decided against it. I need at least a 100 MHz bandwidth and 2-channels. 4-channels is out of my price range. I prefer 200 MHz bandwidth. I need to measure the 40 meter (7 MHz) ham band. The upper end of the band is 7.3MHz in the USA. But I prefer to be able to measure up to the 10 meter (28.0 - 29.7MHz) ham band. The Problems in the book measures something as low as a 10Hz signal at 1Vpp. But something that can measure a radio where the RF Output is 5 Watts or less. I am into building QRP radios. I want to get to the point where I can design and home brew my own. However, I need to pay my dues by experimenting, testing, measuring, doing the math... And when I fail, look into why I failed and see if I can fix it. And I have additional books to help with electronics and math to fill in the missing gaps in my knowledge/experience. On the Siglent oscilloscopes, you can see the numbers and lines on the grid for the FFT. I think the numbers are called Markers? And if you go to 11:19, you can see what I am talking about. This make it easier for me to see where the signal is plotted. I cannot afford a decent oscilloscope, signal generator, and a spectrum analyzer. So, hopefully, the FFT on an oscilloscope can help here. I have been unable to see if the Rigol can do this? I have searched and searched and yet to see where something shows these numbers. I like see to -10dB, -20dB, -30dB, -40dB, etc. And I would like to see horizontal and vertical lines. I want to see if the harmonics have been attenuated enough. And it really helps if the lines and numbers show up in the graph. Thanks, Daniel |
| Fungus:
--- Quote from: radiohomebrewer2000 on July 20, 2022, 01:50:52 pm ---On the Siglent oscilloscopes, you can see the numbers and lines on the grid for the FFT. I think the numbers are called Markers? And if you go to 11:19, you can see what I am talking about. --- End quote --- Don't confuse the X-E models (ie. the one in that video) with the CML models. The X-E is much more powerful and does more things. I don't think the CML model has FFT markers or long FFT so it won't show all that detail. I'm sure the resident Siglent reps will give us the exact details. |
| Zenith:
I've got a Siglent SDS1052CML+. I haven't used the FFT feature much, but it seems quite crude, not like in the video. I have a spectrum analyser anyway. I've found it to be a nice scope to use and I've been pleased with the purchase. It's been around for a time and seems to be heading towards dropping off the price list. The Siglent SDS1202X-E looks much more capable for not that much more money. That's casually looking at UK prices. The Rigol DS1102Z-E looks to be more up to date and has more features than the Siglent SDS1052CML+, but that's just at a glance. I've no idea what the FFT feature is like. At present it's on special offer. Rigol scopes generally have a good reputation. Hantek and Owon have a name for firmware bugs they are not quick to fix. I'm sure someone will be along who has had hands on experience with all three scopes to give you a better informed opinion. |
| armandine2:
I often look to see what's on someones bench: It looks like Bill at Lockdown Electronics has a Siglent SDS1104X-E - he has done some oscilloscope training videos, which may be useful. |
| tautech:
Welcome RHB2k. SDS1202X-E is certainly a lot more scope for not a lot more cost that SDS1102CML+ and the primary reason we no longer stock CML+. However if you can sacrifice some BW the newer 4ch SDS1104X-U has a better FFT, sure not 1 Mpts as X-E models have but a full set of peak markers that the SDS1202X-E doesn't have although we have asked for the same FFT features as are in the 4ch X-E models. From: https://int.siglent.com/products-overview/sds1000xu/ |
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