Hello,
it seems that the DSO 2074G is from Hantek (DSO3064A ?)
The buffer length per channel can be
10 kS
1 MS
2 MS
4 MS
8 MS
12 MS
16 MS
The usage is not easy to see.
If you want have 2MS with a sample rate of 10MS/s you have chose 100us/div
and buffer length 2MS. Than you get 200ms.
You can that data save to a txt-file. But change the time/div not, because this comes in the header of the file. If you change the time/div than you have this wrong in the txt-file and you lose the time information
The file look like:
#CHANNEL:CH3
#CLOCK=100uS
#SIZE=2097152
#UNITS:V
1.0039
0.4392
-0.1255
-0.7216
-1.2549
-1.6314
-1.8824
-1.9451
-1.8196
-1.5059
-1.0667
-0.5020
0.0941
0.6902
1.1922
1.6000
1.8196
1.8824
1.7569
1.4431
1.0039
0.4392
-0.1255
.....
start.png shows the associated display of the scope
To be continued
egonotto