There will not be a 70MHz, or 100MHz (the one I have), only a 200MHz version.
http://www.siglent.com/prodcut-db.aspx?id=1529&tid=1&T=2
And the 400k wfs update rate is marketing wank. That's in segmented mode.
You must have missed this:
Waveform capture rate of 100,000 frames / sec (normal mode); 400,000 frames per second (Sequence mode)
from this page:
http://www.siglent.com/oscilloscope/SDS1000X-E%20Series
That's what I said, segmented mode is sequence mode. They are pushing that number instead of the normal number.
Pushing and pushing...
In chinese side:
First :
Inside Product Overview text one sentence.
"waveform capture rates up to 400,000 frames per second (Sequence mode)"
And just after some sentences there read (without even scrolling page down, in same view, if just tiny eyes movement, under scope front image) very clearly:
"
Key Features:
* Bandwidth: 70MHz, 100MHz, 200MHz
* Real-time sampling rate of up to 1GSa / s
* New generation of SPO technology
* Waveform capture rate of 100,000 frames per second (normal mode); 400,000 frames per second (Sequence mode)
* Supports 256 levels of waveform brightness and color temperature display
* Storage depth of 14Mpts
* Digital triggering system
"
What is pushed, what is wrong?
Perhaps this is too long and in western countries all need today be as instant messaging style. Sad.
But yes, some peoples can not be focused over 5 seconds. Overall this is going more and more bad when all is going to instant messaging.