Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
marmad:
I've been doing stress testing on the two-channel memory sample reading bug of the Rigol (#13 in this list) in order to try to quantify things better, so that Rigol will fix it in the next release.
My results so far are as follows:
AUTO (single) / 14kB / 140kB / 1.4MB / 14MB / 56MB / AUTO (dual) = Reading is SUCCESSFUL (either BYTE or ASCII mode):
7kB* / 70kB* / 700kB / 7MB / 28MB = Reading FAILS [*sometimes] (whether BYTE or ASCII mode):
If anybody else is interested in testing their Rigol, I've written a new piece of software (Rigol_Sample_Memory_Read.zip) (also attached below) to automate the testing of all sample depths.
To use it, you don't need to do any setup or have any input signals to the DSO; it's irrelevant - the software will turn on and off the appropriate channels, set the memory depth, and try to read.
To run every memory depth, just select "ALL" for single and/or dual channel modes, and click "RUN".
NOTE: it takes time to read 7MB, 14MB, 28MB, and 56MB memory depths (the software inserts a 350ms pause after every packet from the DSO - and a 750ms pause between switching memory depths) - so use 'Break' if you want to exit ('Clr Text' to empty the message output box).
If the total received bytes don't match the acquire memory depth setting, the software will display the result in RED (FAIL).
For testing ASCII transfers, you have to use a different technique. Since the number of ASCII bytes is unknown for a given memory depth, select only ONE memory size to test, set 'Repeats' to 3 or 4, then 'RUN'.
If each repeated test gives exactly the same number of ASCII bytes returned, the result is SUCCESSFUL. If the tests return different numbers, the result is a FAIL.
You can also use the 'Repeats' setting to run multiple tests on one memory depth. For example, if I run the 7kB memory read test 10x, it seems to fail ~50% of the time.
Please report back findings here for compilation and delivery to Rigol.
The image shows the results of a test run on all possible acquire depths; 4 settings failed (70kB / 700kB / 7MB / 28MB):
Corporate666:
Does anyone know why these DS2072 scopes are completely unavailable from any US sellers? It seems they have been out for more than a year, and although I can find dozens and dozens of shops selling the DS1052, I can't find a single one who has any DS2072's.
Is there a problem with them? Is it being discontinued or replaced? Can't figure how they could be as scarce as hens teeth after more than a year on the market.
ve7xen:
--- Quote from: Corporate666 on April 26, 2013, 09:02:41 pm ---Does anyone know why these DS2072 scopes are completely unavailable from any US sellers? It seems they have been out for more than a year, and although I can find dozens and dozens of shops selling the DS1052, I can't find a single one who has any DS2072's.
--- End quote ---
I got mine from Tequipment with no difficulty in January and I believe many others have ordered and received since then. Where are you trying to order from, and have you contacted them and asked why it's unavailable?
marmad:
--- Quote from: Corporate666 on April 26, 2013, 09:02:41 pm ---Does anyone know why these DS2072 scopes are completely unavailable from any US sellers? It seems they have been out for more than a year, and although I can find dozens and dozens of shops selling the DS1052, I can't find a single one who has any DS2072's.
Is there a problem with them? Is it being discontinued or replaced? Can't figure how they could be as scarce as hens teeth after more than a year on the market.
--- End quote ---
Many of the owners here bought it from Tequipment or other places in the US until very recently. So I would imagine there's just a backlog of orders at the moment.
Corporate666:
--- Quote from: Teneyes on April 26, 2013, 09:33:04 pm ---
--- Quote from: marmad on April 26, 2013, 09:24:08 pm ---Many of the owners here bought it from Tequipment or other places in the US until very recently. So I would imagine there's just a backlog at the moment.
--- End quote ---
Tequipement had a 6 week wait but not any more. and often w/discount.
PM Tequipment on EEVBLOG, he is VP.
https://www.eevblog.com/forum/chat/special-price-for-eevblog-members/msg212809/#msg212809
--- End quote ---
I just got off the phone with TEquipment and they have none and have a waiting list of people - their website says 4-6 weeks, as does Rigol's website.
There are also none for sale on any US site, or even on eBay. There are 2 on eBay, all being shipped from China suppliers, and being sold for 40% above MSRP.
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