Rfreire Posted May 6, 2018 Posted May 6, 2018 Hi there Board! o/ This is me again tapping from your infinite wisdom. I will be emptying my pockets in the Canada trip and another item that I have in my shopping list is a Oscilloscope. And I'm flirting witha Rigol 1054Z (https://www.amazon.com/gp/product/B012938E76/) Far from being a Engineer (my major was in chemistry, heh), but some times I do feel the need to check out some waveforms. And I like bench stuffs - I'm not considering some software-defined oscilloscope that would do the same for half the price. Because I'm cranky :-P What's your opinion? I aim to stay behind the USD450 bar. Eager to hear your opinion! Happy Sunday; - RF.
TonyMac32 Posted May 6, 2018 Posted May 6, 2018 Oh dear, well, I'd have pointed you toward a PicoScope, but you're cranky. This will sound terrible, but I've never spent any real amount of time with a bench scope under 100 MHz bandwidth, and only have experience with Techtronix, LeCroy, and HP/Agilent/Keysight (<--- might be a new name by the time you read this) Do you truly need 4 channels? https://www.amazon.com/Rigol-DS1102E-Digital-Oscilloscopes-Bandwidth/dp/B0039N9ZBA I didn't see an external trigger on the other one, something I use a good bit.
Rfreire Posted May 6, 2018 Author Posted May 6, 2018 (edited) Hey @TonyMac32!!! First of all, HUGE thanks for your output: I was expecting you to pour something here ;-) Well. I don't really really need 4 channels. Matter of fact, initially it will be more like a luxury multimeter, while I don't get more well versed in the possibilities and usage. I don't envision myself in a medium term tinkering with more complex electronic circuits (read: > 20 MHz), so... Well, I see that I could save around 50 bucks and get the double bandwidth with the 1102E. However, the 1054Z does have a bundle (from where I have a open RFP) which also includes a I2C, SPI and UART protocol decoder, where I do see myself tinkering with (would have helped me a lot when I was writing a LTC2990 I2C python driver...). Datasheet here. And the 1054 sports a larger screen :-P Any extra thoughts? Ah, FWIW, HP / Agilent / Keysight; I got somewhat acquainted with it, hehe. Last year I bought one of those software-defined VNAs (PocketVNA) and was observing the alternatives. I was stunned by the pricing of a old, 2nd hand VNA. What for? A fancy Antenna Analyzer to test VSWR and impedance ;-P Oh well. ;-) EDIT: Check this out, contains pricing (in CAD): https://www.rigolcanada.com/products/digital-oscilloscopes/ Edited May 6, 2018 by Rfreire Added models and pricing
TonyMac32 Posted May 6, 2018 Posted May 6, 2018 Well, remember that bandwidth and frequency are different, probably some Wikipedia time would help, it's a bit too much to get into here. Also, for all that serial work, you can use a $20 logic analyzer (has evil PC software though) look up "24 MHz logic analyzer" and "sigrok"
Rfreire Posted May 7, 2018 Author Posted May 7, 2018 1 hour ago, TonyMac32 said: Well, remember that bandwidth and frequency are different, probably some Wikipedia time would help, it's a bit too much to get into here. Also, for all that serial work, you can use a $20 logic analyzer (has evil PC software though) look up "24 MHz logic analyzer" and "sigrok"
chwe Posted May 8, 2018 Posted May 8, 2018 @TonyMac32 you should write your recommendations as Amazon affiliate links... There's a 16 channel (log. Analyzer) saleae rip-off (100 mhz @3 channels or 50mhz @6 channels etc.) which can be found on aliexpress for ~30-40$. As long as you use the open-source (and not saleas one) software it should be okay (in terms of your 'conscience')...
Rfreire Posted June 18, 2018 Author Posted June 18, 2018 @chwe @TonyMac32 Well, in the end I have bought the 1054Z. And it made its debut sniffing the phone line voltages in order to ensure if is my carrier providing "voltage reversal" upon disconnect. It was not :-P Tony, you might love the discussion (bottom) at https://hackaday.com/2016/10/05/choosing-a-scope-examining-bandwidth/ 1
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