Electronics > Beginners
Owon VDS1022I vs Hantek PC 6074BC
shobo:
Dear EEVblog,what would you choose?
Begginer in practicing electronics,only having theoretical knowledge and some minor Arduino programming.
This would be my first scope and price is one of the top things to consider.
Regarding the tasks it would serve...i don't know yet.
As i am not very into what spec means,an opinion from you,the comunity,would be nice.
Thanks in advance.
Hantek - http://www.hantek.com/en/ProductDetail_2_9163.html
Owon - http://www.owon.com.hk/products_owon_vds_series_pc_oscilloscope
Gyro:
Here's the VDS1022I review thread... https://www.eevblog.com/forum/testgear/owon-vds1022i-quick-teardown-(versus-the-hantek-6022be)/
These is the only threads I can find on the PC 6074BC...
https://www.eevblog.com/forum/testgear/hantek-6074bc/
https://www.eevblog.com/forum/testgear/hantek6074bc-hack-to-250mhz/
https://www.eevblog.com/forum/testgear/hantek-6074bc-alternate-software/ (Hmmm...)
I'm sure someone else must have experience of the Hantek?
EDIT: Found another one that I apparently posted in ::) https://www.eevblog.com/forum/testgear/please-help-my-oscilloscope-trigger/
DDunfield:
IMHO USB scopes generally fall into two categories.
(1) Mostly rubbish.
The majority of the low-cost USB scopes are not really oscilloscopes. They are data capture devices which capture a buffer of samples, then "go deaf" while shoveling it up to the PC. All triggering and capturing is done by the PC on the received data stream.
The problem is the "go deaf" which is NOT synchronized to the triggering (which is happening upstream on the PC). This means that if the trigger event happens to occur in the deaf period, you just won't see it (somewhat OK for repetitive signals, kiss of death for single-shot captures), and worse - "go deaf" may occur at any point after trigger, so chunks of your capture may be just missing.
If your PC or USB gets "busy" momentarily and is unable to process the data fast enough causing buffers to get tossed, the symptoms are exactly the same.
(2) Real oscilloscope
Some (few) of the low-cost USB scopes are actually complete scopes, which perform local triggering and capturing etc. and basically only use the PC for a display/UI. These can be pretty good.
I have a Owon VDS1022I and of several low-cost USB scopes I looked at, it was the only one which was (2) - ie: It actually works.
I don't know about the higher OWONs, but one would hope that if they bothered to include an actual scope in their low cost version, they would have done so on the higher ones as well.
I'm not familiar with the Hantek model indicated, but I evaluated a Hantek 6022BE and it was clearly (1) and pretty bad.
Looking at the 6004BC specs:
1G sample rate, 250Mhz bandwidth, 4CH, fixed capture buffer and FPGA visible in one of the photos all suggest more than a simple USB sampling device which would not be able to meet those specs.
But numbers in technical products are often bogus ("equivalent to") and you still don't know where the functionality dividing line between BOX and PC lies. I don't see enough actual user opinion/reviews to feel super confident. Whats your "risk tolerance"?
Dave
shobo:
Thanks for the input.
The Hantek one is the bottom of the range model,the 70 Mhz version one (250 mhz is the 6254BC).
The risk imo for both is somewhat higher for the hantek,but still present for the Owon too because either one will be ordered from Amazon from the UK(i live in Romania).
The reasonable choice would be the Owon,since i would use the price difference to buy a better soldering station and/or a cheap logic analizer.
shobo:
As an alternative to both,i discovered the PICOSCOPE 2205A which falls between the 2 price wise.
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