Products > Test Equipment
Teledyne Lecroy Brand New 65Ghz 12bit Monster Scope
2N3055:
--- Quote from: hpw on October 13, 2023, 02:38:25 pm ---
--- Quote from: Sighound36 on October 13, 2023, 10:48:07 am ---If you are looking to capture much lower speed signals with higher precision then there are a number of 12 bit scopes from Rigol / Siglent and R&S now which perform very well indeed in the sub 1Ghz portion of the market.
--- End quote ---
This metrics as on Rigol DH04000 model:
DHO4000
Ultra-low noise floor at 18 μVrms
• 12-bit vertical resolution[1]
• 200/400/800 MHz
• Up to 4 GSa/s real-time sample rate
• Max. memory depth: 500 Mpts (optional)
• Min. vertical sensitivity: 100 μV/div
so we will get about 20% noise on 100 uV resolution :-DD
As I like to measure residual LDO switching noise on ADC / DAC as in xxMHz :phew:
As it comes into mind, WM, SDA (as 8 bit) requires some averaging otherwise noise very high
--- End quote ---
What Rigol does well is writing datasheets that lists extremes without mentioning they are not at the same time.
18µV RMS is with both 20MHz BW limit and software filter that kicks in automatically at highest sensitivity..
100µV /div is software magnification. Best it can do is 1mV/div. It is in datasheet..
If I do the same on SDS2000X HD I get 13µV RMS on 1mV/div (so it is same input range as Rigol).
But that is with short time base. With 1ms/div I also get 18mV RMS. SDS2000X HD has real 500µV/div.
100MHz DHO800 that has fraction of bandwidth of DHO4000 has some 50-60µV RMS noise in full BW....
Sighound36:
I feel 2N3055 :-+ has illistrated the point very well here, if we take things on an EQUAL playing field the results will be more towards the REAL WORLD.
Early next year we will have one of these new scopes here so I will put it through its paces with our real world R&D projects and will produce a full MXR review for you chaps.
In that time the new R&S MX05 will be on the market as well, pretty sure Shahriar will be about half way through his review by now so that will be something else to your teeth into as well.
When you are this level my suggestions would say you are in an area of T&E where its all rather decent, its just which application (s) that will be the primary focus of your projects will dictate your TEA purchases from a business perspective imho
Sighound36:
--- Quote from: hpw on October 13, 2023, 02:38:25 pm ---
--- Quote from: Sighound36 on October 13, 2023, 10:48:07 am ---If you are looking to capture much lower speed signals with higher precision then there are a number of 12 bit scopes from Rigol / Siglent and R&S now which perform very well indeed in the sub 1Ghz portion of the market.
--- End quote ---
This metrics as on Rigol DH04000 model:
DHO4000
Ultra-low noise floor at 18 μVrms
• 12-bit vertical resolution[1]
• 200/400/800 MHz
• Up to 4 GSa/s real-time sample rate
• Max. memory depth: 500 Mpts (optional)
• Min. vertical sensitivity: 100 μV/div
so we will get about 20% noise on 100 uV resolution :-DD
As I like to measure residual LDO switching noise on ADC / DAC as in xxMHz :phew:
As it comes into mind, WM, SDA (as 8 bit) requires some averaging otherwise noise very high
--- End quote ---
You post promted me to actually look at the real world noise floor of one of my personal scopes earlier:-
Teledyne's offcial specifications list the vertical noise for a 4Ghz wavepro @ 228uV 50Ohm open port full BW NO form of manipulation at all.
https://cdn.teledynelecroy.com/files/pdf/waveprohd-datasheet.pdf
Lecroy Wavepro 404HD 4Ghz BW, scope had been running for over hour (have been looking at some new clock supply boards) running full bandwidth/50 Ohm open ports/No ERES/No digital filtering/No averaging. 10GS/s sample rate 1uS HTB/1mV VTB/100Ks.
Below are the actual scope screen images 165pS rounded up. As you can see it comfortably exceeds it published figures of merit by at this point by over 25% of the spec sheet 228pS. In fact every Lecroy 12bit scope I have owned has demonstrated this. No tricks, no filters etc just the real world performance of said device.
Final image with BW to 20Mhz and ERES to max, 32pS bit of a difference eh :-DD
Navigation
[0] Message Index
[*] Previous page
Go to full version