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Rigol DS1000Z series buglist continued (latest: 00.04.04.04.03, 2019-05-30)
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ebastler:

--- Quote from: Payne on April 09, 2018, 08:28:42 am ---RoGeorge, you get the problem when you set to 200mV, the trace will suddenly appear again.

--- End quote ---

It has been mentioned before: For ranges of 200mV and below, the offset range is only +- 2V. As you have set a larger offset, the scope must do "something" to get back into the available operating range. Not sure what it does exactly, since I don't have the scope in front of me. Does it reset the offset to zero? In any case, not a bug.


--- Quote ---Offset Range:
1 mV/div to 499 mV/div: ± 2 V
500 mV/div to 10 V/div: ± 100 V

--- End quote ---
https://www.batronix.com/pdf/Rigol/UserGuide/DS1000Z_UserGuide_EN.pdf,  page 17-2

EDIT: fixed the link
ankerwolf:
Hello,
what ist the problem?
Beginning at 5V/div, open BNC, set trace to -5V >> 1 div under middle.
Changing to 2V, 1V, ...
nothing happens, the trace ist stable 1 div under middle!

LG Wolfgang
JohnPen:
A little more detail on the display readings for <200 mV.   On my scope the 200 mV range the display shows plus 100 mV with the aforementioned -5 volt offset input.  Increasing sensitivity to 100 mV doubles on the display similarly for 50 mV the display implies reading 100 mV.  20 mV as referred to in my previous comment hits the top of the graticule correctly.  So I suppose one could get confused.  Incidentally if one has a signal on the input it reappears as well for <=200 mV but no chance of triggering. ;D
JohnPen:
Hi ankerwolf,

Did you Set VerticalRef = Center before doing the test?
ankerwolf:
Hi,

--- Quote from: JohnPen on April 09, 2018, 09:25:51 am ---Did you Set VerticalRef = Center before doing the test?

--- End quote ---
No, but now: Normal action: left and right cursor changed if out of range. That ist absolut normal.

LG
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