You have to be in 'normal' memory mode and not 'long' memory mode to get the full 1GSamples/s. Which is a shame really.
In long memory mode it can not use 1GSa/s at all.
You both are right! I knew this. But I'm pretty sure scope was in short mem. mode! Look what I did: 1) Turn on the scope, check all stuff (I believe I've checked memory too) - isn't memory set to short by default btw?
2) I connected probe (not probe that comes with oscilloscope - it is really bad quality, I can't do probe compensation at all, but ok) to the BNC-A only.
3) I either press "Auto" button or turn chanel A manually - only "A" (or "I" if you want) button is illuminated!
4) When I rotate "S" dial, sample rate increases, but only up to 500MSa/a!
Then I turn off scope, and repeat all this few times - all the same!
After that, I "accidentally", by feel, how it usually goes in life
, decided to try ch.B ONLY (manually turned off ch.A), repetated steps 1-4 and I got 1GSa/s! Than, I can (without restart) change ch.B to ch.A and 1GSa is still there!
I must note: I turned scope on/off only few times after purchase, so maybe it was long memory somehow stayed switched on (remains from factory testing)?
I forgot to mention: I also have/had problems with switching from Real-time to Equ-time mode - it was impossible to do that - I got message: "Function isn't useable!" - I didn't use any "special" things, just normal, fundamental measurement of some sine waves! But, it seems to me, after, say, 10 switching-on's that both problems disappeared - I have to check this again!
Afaik, SDS1000CFL models (2 and 4 channel) have real time clock. SDS1000DL/CNL/CML do not have real time clock circuit (it is not FW it is hardware).
Well, I'm sure you know about this better than me
! But, I think I saw somewhere in Siglent's leaflet or datasheet something like "SDS1072/1102CML have precise 6-digit frequency measurements based on
"real-time clock" (or something like that), not by counting pixels from screen" - but I'm really not sure about that! Just look at this picture (it has zoom) - SDS1102
CML with clock - if there is no way (simply because there is no RTC onboard) that it has clock - than they just photoshoped image from CFL series, as you said! "False advertising" -hehe
.
http://www.siglent.com/en/product/detail.aspx?id=100000005058775&nodecode=119008001That "clock-issue" isn't really a big thing, but I want to know do I have correct FW (or FW/HW combination).
FW:5.01.02.22 (not just yet available from Siglent download center, I hope they update download center asap so that peoples can update new FW)
Where you find this version (no need to answer!!!)? Industrial espionage
?
Just kidding! What did you get with this new FW?
Do you guys know is it possible to "drag" automated-measurements "block" across the screen, I can't find that in Manual? It is especially irritatingly during FFT measurements: that "info-block" anchors itself just far left covering the FFT spectrum in really important part!?
Cheers!
Child