Products > Test Equipment
New Tektronix 3 Series MDO
snoopy:
--- Quote from: 2N3055 on May 07, 2020, 06:15:43 pm ---
--- Quote from: nctnico on May 07, 2020, 02:59:22 pm ---
--- Quote from: 0xdeadbeef on May 07, 2020, 02:44:29 pm ---Hm, the typical marketing nonsense, selecting two products from different price classes with totally different sample rates and assuming that anybody will fall for this.
--- End quote ---
Yes. According to every oscilloscope manufacturer the competition has an ENOB of only 4 bit compared to their 16 bit. :-DD
These competitor comparisons are beyond useless!
--- End quote ---
I disagree, they are quite useful, as constant reminder that we shouldn't trust any of them blindly !! :-DD
On a serious note, when in need, you have to make detailed case study of your test case, and submit that to support/application support teams at vendors to see what they say.
When you ask them specific questions, none of them will lie, and will quite honestly admit what they can offer you for your use case...
--- End quote ---
I agree, the more of these types of comparisons the better. If you are going to payout top dollars for test equipment you need to have the facts in front of you because the marketing blurb or sales guy will never tell you what's wrong with a particular piece of gear ;)
0culus:
--- Quote from: snoopy on May 08, 2020, 12:27:51 am ---
--- Quote from: 2N3055 on May 07, 2020, 06:15:43 pm ---
--- Quote from: nctnico on May 07, 2020, 02:59:22 pm ---
--- Quote from: 0xdeadbeef on May 07, 2020, 02:44:29 pm ---Hm, the typical marketing nonsense, selecting two products from different price classes with totally different sample rates and assuming that anybody will fall for this.
--- End quote ---
Yes. According to every oscilloscope manufacturer the competition has an ENOB of only 4 bit compared to their 16 bit. :-DD
These competitor comparisons are beyond useless!
--- End quote ---
I disagree, they are quite useful, as constant reminder that we shouldn't trust any of them blindly !! :-DD
On a serious note, when in need, you have to make detailed case study of your test case, and submit that to support/application support teams at vendors to see what they say.
When you ask them specific questions, none of them will lie, and will quite honestly admit what they can offer you for your use case...
--- End quote ---
I agree, the more of these types of comparisons the better. If you are going to payout top dollars for test equipment you need to have the facts in front of you because the marketing blurb or sales guy will never tell you what's wrong with a particular piece of gear ;)
--- End quote ---
Honestly, if you're buying high end gear, you should be getting the vendors to give you demo units so you can try before you buy. If I'm buying for work, and I'm spending $30,000 on an o-scope, I better damn well be getting a demo so I can exercise it see how it works in my application.
Sighound36:
--- Quote from: 0culus on May 08, 2020, 01:20:38 am ---
Honestly, if you're buying high end gear, you should be getting the vendors to give you demo units so you can try before you buy. If I'm buying for work, and I'm spending $30,000 on an o-scope, I better damn well be getting a demo so I can exercise it see how it works in my application.
--- End quote ---
Could not agree more I spent around 5 weeks with four different vendors scopes in the price range I was looking at (company wise) up to £50K All were very accommodating and helpful. Even the Tek rep was 100%
Sighound36:
--- Quote from: snoopy on May 08, 2020, 12:20:42 am ---
Nope ! It's a 1GHz bandwidth scope that can't display 1GHz and that has an ENOB of 8 bits or less even though it claims 12 bits !
If it was a Tek scope a few of them on here would be all over it bagging the crap out of it !
--- End quote ---
Snoopy
I cannot comment on the video you posted as I have never had access to 4000 LeCroy, however plenty of time with the Keysight S series and I have have mentioned it is rather good, but it has its issues as well (the all do, though some more than others!)
The best ENOB I have actually used is 8.7 bits on a 350mhz MDO6000A Lecroy (1Ghz version is 8.4 bits) fab scope just not enough bandwidth or serial data analysis for ourselves for most it's more than enough!
The Equivalent S series (which you really would not compare to, however its been in your video) has an ENOB of 7.8 bits @ 1 Ghz at 500Mhz it is 8.1 bits very respectable.
With the scope we have Wavepro254 the ENOB is 7.8 ENOB @ 2.5Ghz, the S series is 7.4 bits @ 2.54Ghz at 8Ghz it is 6.4 bits, the LeCroy is 7 bits @ 8Ghz. This is achieved without having high resolution active as was the Keysight S series.
The LeCroy also gives 12 bits all the time, plus the same rate does drop in the same fashion as the Tek 6 series
Both of the above using 50 Ohm open ports as well.
The Tek 6 series to achieve its published ENOB has to have high resolution active tables below.
The 6 Series @ 2.5Ghz using high rez model 2mv div vertical time base measuring a 10 Mhz signal is 6.2 bits at 50mv the ENOB is 7.8 bits (high resolution active again).
I have attached some Tek 6 screen shoots I did struggle to get close to the claim claimed noise floor on more than a few occasions, however all I have left of those are below.
Though while I was testing out a new clock design I did notice the 'claimed' jitter measurements now I would love to actually put these on the product marketing brochure however I am not sure that an oscilloscope has the ability to really deliver Zeptoscond or Yactosecond accuracy :-DD :-DD except maybe the UXR?
Please do inspect the screen shots absolutely zero image manipulation has occurred.
In fairness to the Tek the power analysis app was very good it got respectably close to my Tek power analyser, have attached some images for that app as well.
Sorry but the Tek 6 series does not have enough 'redeeming features' to warrant the purchase imho
Sorry last images clearly shows the Tek displaying Yactosecond (ys) time meas
Sighound36:
--- Quote from: snoopy on May 08, 2020, 12:20:42 am ---Yes. According to every oscilloscope manufacturer the competition has an ENOB of only 4 bit compared to their 16 bit. :-DD
These competitor comparisons are beyond useless!
--- End quote ---
Nope ! It's a 1GHz bandwidth scope that can't display 1GHz and that has an ENOB of 8 bits or less even though it claims 12 bits !
If it was a Tek scope a few of them on here would be all over it bagging the crap out of it !
[/quote]
Hi Snoopy
I do agree with you so to keep things in perspective an image of the LeCroy Wavepro 254 meeting its 2.5Ghz bandwidth @ -3db with the 12 bits and no high resolution filter added.
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