I just go my new OWON and I am quite satisfied BUT found one very annoying software bug:
Scope set to 100ms/div or slower and REAL samplerate drops down to nothing.
Thank you very much.
As I understand it:
- If you often work one channel, then 7102;
- If you often work with two channels, then 8102.
the low end...
SDS8102 100MHz 2GS/s
SDS9302 300MHz 3GS/s
seem tempting esp SDS8102 if someone can hack to 200MHz. SDS9302 maybe pricey (cant find in ebay), if it can be hacked to 1GHz scope, that can be cool.
http://cgi.ebay.com.my/New-OWON-Digital-Storage-Oscilloscope-SDS8102-1G-s-2CH-/280714920525?pt=BI_Oscilloscopes&hash=item415be9c24d
New user popping in..
I just go my new OWON and I am quite satisfied BUT found one very annoying software bug:
Scope set to 100ms/div or slower and REAL samplerate drops down to nothing.
settings:
mem set to 10M, 100ms/div.
scope shows sample rate as 10MS/s
try measuring 1kHz calibration signal, hit stop-button and "zoom in" turning timebase to 500us/div.
1kHz square wave has become total garbage, turns out sample rate is less than one-thousand of what it should be.
Can anyone check this behaviour on their own scope, is it the same in all units and firmware versions?
My scope has firmware 2.1.1
Should I take SDS8102 Unit with the difference in price with SDS7102 Unit = USD180, or stay on the price / quality on SDS7102 Unit?
I just go my new OWON and I am quite satisfied BUT found one very annoying software bug:
Scope set to 100ms/div or slower and REAL samplerate drops down to nothing.
It's not a bug - all DSO's set their sample rate based on the sec/div setting and the memory depth - even if they don't show the rate on the screen. At 100ms/div, a full screen of waveform data = 2 seconds of real time - how is the scope supposed to do that precisely? It has to drop the sample rate in order to have the time and memory space to capture the data.
IF 50ms/div gives me 20MS/s and 100ms/div gives me only 2 kilosamples/s I call it a BUG.
See the difference?
Are you saying your scope does not capture down to 200ns at 100ms/div? If so, your scope is defective.
mzzj:
What SDS model you have?
One time you tell that scope display 10Msa/s if setting is 10M memory and 100ms/div
other time you tell that scope display 20Msa/s if setting is 10M memory and 50ms/div
I have look with 2.1.1. version SDS7102.
same settings and 100ms/div it display 5Msa/div
50ms/div it display 10Ms/div.
I have not yet looked carefully what is real samplerate becouse just now too busy.
OK.
I just got e-mail confirmation from my scope importer/seller (rf-loop) that this bug affects probably all SDS7102 FW 2.1.1 versions.
(rf-loop, please correct me if you are not the person I bought my scope.)
No idea about other FW/HW revisions. Is there any other FW version out?
Hopefully it is something easy like wrong prefix with units and OWON is able to fix this
sooner or later.
If some people read this who have FW before 2.1.1 and/or Serial number below SDS71021127000
Please test this!
If some people read this who have FW before 2.1.1 and/or Serial number below SDS71021127000
Please test this!
I don't have the Owon anymore - and I don't remember testing this in continuous mode. I DO remember testing in single-shot mode at slower div settings (> 500ms) - and it seemed to work fine with the entire memory.
If some people read this who have FW before 2.1.1 and/or Serial number below SDS71021127000
Please test this!
I don't have the Owon anymore - and I don't remember testing this in continuous mode. I DO remember testing in single-shot mode at slower div settings (> 500ms) - and it seemed to work fine with the entire memory.
in and out and samplerate is ok. But if try store single shot to USB it do not store any capture. Only picture can store. (it can push store wfrm but there is no captured data in bin file) If do store in continuous scroll mode it store only around 6kb captured data.
Is there a part 3 of the review coming?