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| Are 'premium' scope brands still justified? |
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| joeqsmith:
--- Quote from: tautech on April 13, 2024, 09:46:33 pm --- --- Quote from: tszaboo on April 13, 2024, 09:33:29 pm ---I have the MSOX 3104T at work, Siglent SDS824HD at home. The Siglent is surprisingly good, and it can do things that the MSOX cannot. For example the 12 bit and zoom makes it almost work like a low speed power rail probe, that would be 5x the price of the scope just for the probe. I used Siglents before they between Ok to Meh. These HD models are good. And the entry price is very low. But the reverse is also true. The MSOX is a workhorse, and I think every serious engineering company deserves to have one. --- End quote --- This. Just to dabble with a SDS802X HD for only $340 as a test bed gets you to experience the same UI used in the PC based 16" screen 3&4 GHz SDS7000A. --- End quote --- I may go this route, similar to what we did with the Siglent Arb. While I did ask you in the other thread if the scope's encoders actually worked you did not respond (maybe you think I was poking fun at Siglent) but it was a legitimate question based on what I saw with the other product. I can't see spending upwards of 20k on a product that has a potential problem like this. |
| Pinkus:
--- Quote from: AndyC_772 on April 13, 2024, 11:21:41 am ---But maybe it would still make sense to spend a few beer tokens on a DHO804 to pull out when I need to probe a small signal? --- End quote --- This is exactly what I did. I am using a Keysight DSOX4000 series scope as my daily work horse. You might think it was already outdated and so do I sometimes. But at every fair,/exhibition I take a close look at various scopes ($3-4000 range) from the Chinese (due to their relatively low prices compared to Keysights scopes), and every time (really), I'm glad of my Keysight. They (China-scopes) get better from year to year, yes indeed, but at the moment I wouldn't swap under any circumstances. Maybe in 3 or 5 years time. Side note: This may be one of the reasons why Keysight has not yet released a successor to the DSOX3K/4K series: it is simply not necessary and the time can be used to make the successor even better. Good for me, so my scopes retains its value. I bought a DHO804 for exactly the one reason you mention (small signals) (*). It is OK, even very OK for the price. But it's not even near to become a replacement, just a supplement that is switched on once a month (like a current probe). (* I admit, I also bought it because it allows offsite operation on battery and because I can save my expensive Keysight for measuring some high voltage signals). Please keep us informed about your impressions. |
| KungFuJosh:
--- Quote from: joeqsmith on April 15, 2024, 12:51:37 pm ---if the scope's encoders actually worked --- End quote --- I thought I responded? I've had zero issues at all with my SDS2504X+, and I'm not very gentle. There's no chance they would use lower quality hardware on their top tier machine. |
| joeqsmith:
--- Quote from: KungFuJosh on April 15, 2024, 02:06:44 pm --- --- Quote from: joeqsmith on April 15, 2024, 12:51:37 pm ---if the scope's encoders actually worked --- End quote --- I thought I responded? I've had zero issues at all with my SDS2504X+, and I'm not very gentle. There's no chance they would use lower quality hardware on their top tier machine. --- End quote --- How long have you owned the SDS2504X+? I would say I am gentle, but I guess some equate to how fast I was turning the knob to using an electric drill. My original posts and videos demonstrating the problems. https://www.eevblog.com/forum/testgear/siglent-sgd2042x-rotary-encoder-poor-performance/msg4075474/#msg4075474 Later dialog which suggests about it. Out side of suggesting that turning the encoder is some form of abuse and they had made changes in the firmware to address it, seems at one point tautech suggested it was firmware and not hardware. There is mention that many users didn't have the problem. Maybe it is firmware, hardware or quality control. It didn't leave me with a lot of comfort. https://www.eevblog.com/forum/testgear/try-before-you-buy-357499/msg4617403/#msg4617403 I'm not apposed to buying another low cost product from Siglent to try it out. My only concern is if it does have similar problems, their higher end products may behave completely different. I had asked if their higher end Arbs would have the same problem. I don't think I ever got an answer. |
| temperance:
Talking about encoders: TDS5K series: pretty old now and the encoders are all bad. Those are custom and Tek doesn't provide new encoders. Do I have to put the scope in the scrap bin just because some encoders failed? MSO3054: dual concentric zoom, scroll encoder broken (Jumps back and forth). No replacement available and the encoders can't be bought as a spare part. Repair cost over €400. Keysight 33210A arb: encoder doesn't work properly after five years and again they are some custom thing made by I think Bourns. Replacement encoder price: astronomical (I don't remember exactly but it was around €180 for two lousy plastic encoder.) Siglent: the encoders are the typical 5 pin things made by various manufacturers for less than €5 for a quality encoder. @joeqsmith The encoders on my SDG2042 X "works". It does not register all clicks but it does not jump back and forth. Maybe the encoder on your arb is broken. (I didn't read all what has been written about it) SDS2354X HD all encoders work exceptionally well and I've never seen any jumps even when turned very fast. But the quality seems to be better in comparison with the encoder in the SDG arb. |
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