The 1054B is <$366 street price via Tequipment not including the eevblog discounts and possibly other promotions.
At the published bandwidth and list price they are about the same proportion, 50 MHz vs 200 MHz is still 4x more at 4x the price as well as serial decodes and segmented memory.
However, its in the extreme end, the usable bandwidth were you can get more. Its likely to still go past 500 MHz based on the curve slope at its more sensitive vertical amp setting.
So the big question is do you need that much bandwidth to pay more for it? Or in the end its all part of happy holidays?Saturation, I have a little more time now to see your numbers; seems 1050B has ~70 MHz bandwidth instead of its rated 50 MHz. It is not too surprising but nice to see in a budget scope. I wonder if all GDS 1000B and 2000E have similar conservative bandwidth rating?
Maybe ntcnico can give another datapoint on frequency response? ntcnico I read your review thread; I hope I didn't miss it. Nevermind I found it here on post #67 https://www.eevblog.com/forum/testgear/gw-instek-gds2204e-(200mhz-4-channel-dso)-review/?all
It's a good measurement showing 2204E roll off (rated 200MHz bandwidth)
-3dB @ 290MHz with 50mV/div, more steep curve
-3dB @ 210MHz with 10mV/div, more gradual curve
I am personally thinking 2070E is a sweet spot @ $920... but 2204E is so close @ $1256. Can I convince myself?
I know this is a 1054B thread - I try to keep it relevant.
Thanks to you all.
Sorry, mea culpa, I have them but didn't have time to take it out; will replace that photo with the screen grab.A screenshot captured on a USB stick is much more helpful and clear for those following than something like this:
1.Fixed the system crash randomly which caused by the ¡§Advance Math¡¨ function
1.Fixed the system crash randomly which caused by the ¡§Advance Math¡¨ function
No comment.
Test request due to this thread:
https://www.eevblog.com/forum/testgear/opinions-on-gw-instek-scopes/msg1131021/#msg1131021
Please check analog bandwith with Sin(x)/x ON|OFF, with all 4 channels ON to minimize sampling rate.
Hello there,
I see one thing in particular that is interesting but not sure how exactly to interpret. The rise time test showed about 3.8ns and i wondered what setting the scope was on to get that. I noticed some of the scopes have a 1ns setting, so i wondered if we could get a raw ADC view on the scope. If in fact they use a true 1GSPS ADC then we should be able to see, somehow, about 0v at say 10ns and say +5v at 11ns (10ns plus 1ns). Is that the way these DSO's can work, or do they obtain that 1GSPS sampling rate by doing several scans of the same waveform coming in in real time? Or, do they do some intermediate work on the wave which would bring it up to 4ns instead of 1ns? BTW what is that scope rated for in rise time?
I am hoping that they use a true 1GSPS ADC chip of some kind combined with fast memory when they advertise as 1GSPS of course.
I am rather new to the DSO's as i had and have used many CRT scopes in teh past including 10 thousand dollar CRT storage scopes, but only used two DSO's so far and only for a short time, so i dont know much about what to look for and what to watch out for.
Thanks for any additional info like this.
News:
Mid-May 2017 Tequipment.net stocked 55 1054B and today it had 14 remaining.
News:
Mid-May 2017 Tequipment.net stocked 55 1054B and today it had 14 remaining.Make that 4 remaining!
Here is a more proper test using a linear ramp. One can see gaps in the data, which are also in the saved waveform. I believe the reason is that in the firmware they do some vertical scaling while keeping only 8 bit numbers.
Another problem I found is that on high sensitivity scales it does not have true 8-bit resolution. For example, on 1 mV scale, all bit values are spaced by 3. So they simply rescale the values instead of increasing the analog gain.
In terms of responsiveness, I found the horizontal shift knob has rather large lag.