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New Rigol DS1054Z oscilloscope
Plasmateur:
--- Quote from: ebastler on August 19, 2019, 04:45:22 am ---
--- Quote from: Plasmateur on August 19, 2019, 01:49:38 am ---Is using the window trigger the only way to get get a waveform across all the sample points? For some reason, I cannot move the trigger position to the left in Edge trigger mode.
Perhaps there was an update which allows the trigger position to be moved to the far left while in edge trigger mode? Weird.
--- End quote ---
Hmm -- I may be misunderstanding the question? When you say "move the trigger to the left", you mean the left edge of the screen?
To my knowledge, this has always been possible with the DS1054Z, in any trigger mode, and it certainly is possible now. In fact, you can move the trigger point well beyond the left edge of the screen. The "delay" display in the upper right of the screen will then tell you the time difference between the trigger point and the time window visible on the screen.
For you, what happens when you rotate the "horizontal position" knob to the left?
--- End quote ---
Let's say the scope is set to average mode
Trigger type is edge with rising slope triggering off ch.4
I use a signal generator to send a repeated pulsed sinewave to ch.2 and a trigger signal to ch.4. If I turn the knob counterclockwise, the trigger position appear to move left (shown in attached picture), however the trigger position is still at time 0 seconds. So if I save and plot the data, the signal will begin around halfway into the signal array.
However if I use a window trigger (shown in attached picture) and move the time to to (Samples)/(Samplerate)/2,
or as shown in the picture (1200[points]/5e8[points/sec])/2 = 1.2e-6 seconds
then when I save and plot the data, the sinewave starts at the beginning of the array.
ebastler:
--- Quote from: Plasmateur on August 20, 2019, 02:22:20 am ---If I turn the knob counterclockwise, the trigger position appear to move left (shown in attached picture), however the trigger position is still at time 0 seconds. So if I save and plot the data, the signal will begin around halfway into the signal array.
However if I use a window trigger (shown in attached picture) and move the time to to (Samples)/(Samplerate)/2,
or as shown in the picture (1200[points]/5e8[points/sec])/2 = 1.2e-6 seconds.
then when I save and plot the data, the sinewave starts at the beginning of the array.
--- End quote ---
Thanks for the additional explanation. Yes, you are right there: In "Edge" mode, the trigger event occurs as soon as the edge is detected. What you change via the delay setting (horizontal position knob) is not the position of the trigger event relative to your signal -- the timing between your trigger pulse on channel 4 and your signal burst is given by your signal generator. Rather, the delay setting determines the position of the captured and displayed data, relative to the trigger event.
With the more complex triggers (pulse width, delay, window etc.), the actual trigger event only occurs after whatever timing relation on the inputs you have defined as the trigger condition comes true. That's what you observe in your "window trigger" example.
gardner:
I searched for mentions of cursor with no joy. Flog me with a wet noodle if this is a well known FAQ.
I do not see a way to use manual X cursors without having the Y ones also visible (also Y vs X). I wind up having to tuck them down at the bottom or side. Is there a way to selectively use X or Y cursors but not both that I am somehow missing? Thanks.
BravoV:
As this thread is like the DS1054Z owners lair. :-DD
Does any owner here, especially for those with expired warranty, and it was broken while in normal usage, and then fixed by yourself.
Just curious what are the commons problems once this scope "aged enough".
Common problem like bad cap is still unheard of, at least for me.
Anyone ?
Please don't discuss any of the existing known bugs, design flaws and etc, just want to hear, or hopefully we can come out with a list of common problems for this scope once they're aged.
McBryce:
The DS1054Z was only released at the end of 2014. I would be extremely concerned if they had used capacitors that were already starting to fail.
McBryce.
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