Products > Test Equipment
Rigol DHO804 Test and Compare Thread
core:
--- Quote from: Martin72 on December 23, 2023, 06:44:25 pm ---I have started to "play through" the Batronix demo board again with the rigol.
I will probably upload the results to googledrive.
I already have a few pictures in the box today.
Note to self: In the pass/fail menu do not activate the screenshot at fail, but save it yourself - otherwise the save message will be included in the picture.
DS17: Demo Acquisitionmode Normal/Average (16x)
DS18/19: Demo Acquisitionmode Normal/Peak
DS20: Demo cursors
DS21-DS24: Demo measurements, several modes
DS25: Demo persistence 1sec
DS26/DS27: Demo Pass/Fail
--- End quote ---
Please go through all the tests on this demo board, as much as you have time to do so. Very interesting.
Martin72:
Promised. ;)
I still have some time, all scopes except the 1104X-E are back to work.
Randy222:
--- Quote from: Martin72 on December 26, 2023, 08:15:27 pm ---
--- Quote from: Randy222 on December 26, 2023, 06:53:28 pm ---On the DHO804, why does the scope lose signal sync if the vertical scale is increased?
Example;
Ch1 on the internal 1kHz 3v peak signal, set trigger to 1v, but then dial up the scale to 10v/div. The trigger does not change, so why the scope lose sync on the square wave (dancing signal)?
--- End quote ---
Have a look at the data sheet under "Trigger Sensivity".
It says 0.5div, at 10V/div and a 3V signal it is no wonder why it no longer triggers.
--- End quote ---
Trigger is based on the display? If the signal is 3v and the trigger is 1v, why should it matter what the V/div is set to?
ebastler:
--- Quote from: Randy222 on December 27, 2023, 03:06:45 pm ---Trigger is based on the display? If the signal is 3v and the trigger is 1v, why should it matter what the V/div is set to?
--- End quote ---
Trigger hysteresis is based on the vertical sensitivity, it seems. You set the trigger threshold to 1V, and that's where it will remain. But there is no independent control over what is considered a significant signal excursion across the threshold (which leads to a trigger event), rather than noise. That is derived from your vertical sensitivity setting (V/div).
Not sure whether that's how other scopes commonly do it? Are there scopes which give you a separate hysteresis control?
Martin72:
I have just tried this on the 1104X-E and it is exactly the same.
But it makes no sense, you can hardly see anything of the 3V signal at 10V/div.
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