Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
marmad:
--- Quote from: Galaxyrise on December 12, 2013, 03:53:11 am ---First image: The "Auto" indicates that it isn't triggered. Set it to normal triggering if you only want triggered waveforms. The stuff on the left doesn't look like it falls below -32mV, so it's not going to trigger there. The stuff on the right just barely does, so I would think you'd get triggering on that if you set it to normal.
--- End quote ---
Definitely should be using NORMAL triggering - as well some bandwidth limiting if you've got your DSO tweaked to 300MHz. In fact, it's possible that the 300MHz installed option could be causing problems on non-A models (if you installed it) - since it was never actually intended by Rigol to be activated accept on A models.
Teneyes:
Carrington showed displays of Auto Triggering, and the position of the waveform at the trigger point
That reminded me to check the AC coupled Trigger bug I reported back in july here
https://www.eevblog.com/forum/testgear/first-impressions-and-review-of-the-rigol-ds2072-ds2000-series-dso/msg256168/#msg256168
That bug is still there. (Noone confirmed back in July)
Trigger position should be at the Center
1 DC coupling, NO offset
2. On 100ns/div the offset of 50nsec is 1/2 div
3. On 50ns/div the offset of 50nsec is 1 div
4 On 20ns/div the offset of 50nsec is 2 1/2 div
marmad:
@Teneyes: Sorry, somehow I missed/forgot the AC-coupling trigger bug, and didn't add it to the list (so it wasn't fixed by Rigol). I think it was because of the busy summer renovations of my loft - but I will add it soon and pass it along to Drieg - currently on WiFi on fast train to Paris for the weekend ;)
marmad:
I'm away from my DS2000 until Monday, but perhaps someone else can test using the Trigger Out with the new v.2 firmware?
I'm not sure Rigol could have done anything about it in FW, since it might have been hardware related (on HW v.1 models), but I'm pretty sure our 'concerns' about it were reported to them via Drieg.
To sum up the previous findings:
Delay of Trigger Out when using CH1/CH2 as trigger: ~210ns +/- 4ns
Delay of Trigger Out when using External Trigger as trigger: ~163ns +/- 4ns
Anyone want to check if it's still the same?
Carrington:
--- Quote from: marmad on December 12, 2013, 02:51:05 pm ---I'm away from my DS2000 until Monday, but perhaps someone else can test using the Trigger Out with the new v.2 firmware?
I'm not sure Rigol could have done anything about it in FW, since it might have been hardware related (on HW v.1 models), but I'm pretty sure our 'concerns' about it were reported to them via Drieg.
To sum up the previous findings:
Delay of Trigger Out when using CH1/CH2 as trigger: ~210ns +/- 4ns
Delay of Trigger Out when using External Trigger as trigger: ~163ns +/- 4ns
Anyone want to check if it's still the same?
--- End quote ---
After of the above.
I can confirm that the the trigger out delay is ~230ns, for the two last firmwares on my DS2072 HW v.1.
CH1= "The ghost pulse."
CH2= To Trigger Out.
How nice, X-Y cursors, in the firmware 02_01_00_03!
Have a great weekend.
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