Products > Test Equipment
SainSmart DDS120 & DDS140 USB Oscilloscope
kimbergirl:
thanks for the quick reply
i still dont regret the nastygram that is in the Sainsmart inbox
back to work on the electric car......
Rio:
@mmark: Thanks for your effort. I used the DDS120 easily with the last version of OpenHantek6022 in Win7...
kimbergirl:
thanks
someday i will get frustrated enough to get a stand alone O scope not tied to the strange fleeting whims of programmers and a separate compute box
luminary6:
Have problem with DDS120 and OpenHantek6022 (b188)
I try use my DDS120 again, find new software OpenHantek6022 (b188) and try configure all again.
I see that OpenHantek6022 not read calibration data from DDS120 and zero is not in zero and gain wrong.
This is normal?
Anybody try use OpenHantek6022 with DDS120?
Your device is calibrated?
I make calibration file C:\Users\USER\.config\OpenHantek\modelDDS120.conf
with content (for my DDS120):
--- Code: ---; OpenHantek calibration file
; individual calibration values for DDS120
; will be read by .../src/hantekdso/modelDDS120.cpp
; filename is modelDDS120.conf
; copy into ~/.config/OpenHantek (Linux)
; copy into %USERPROFILE%\.config\OpenHantek (Windows)
; multiply channel to get the correct gain
[gain]
ch0\20mV=1.250
ch0\50mV=1.244
ch0\100mV=1.241
ch0\200mV=1.298
ch0\500mV=1.164
ch0\1000mV=1.199
ch0\2000mV=1.205
ch0\5000mV=1.203
ch1\20mV=1.231
ch1\50mV=1.235
ch1\100mV=1.252
ch1\200mV=1.322
ch1\500mV=1.193
ch1\1000mV=1.219
ch1\2000mV=1.221
ch1\5000mV=1.224
; add offset values
[offset]
ch0\20mV=6
ch0\50mV=6
ch0\100mV=6
ch0\200mV=5
ch0\500mV=6
ch0\1000mV=5
ch0\2000mV=5
ch0\5000mV=5
ch1\20mV=5
ch1\50mV=5
ch1\100mV=5
ch1\200mV=5
ch1\500mV=5
ch1\1000mV=5
ch1\2000mV=5
ch1\5000mV=5
--- End code ---
I write this message for any who want use OpenHantek6022 software with SainSmart DDS120 and will face the same problem.
horo:
Hello luminary6,
Thx for providing your conf file. OpenHantek6022 already does provide a template for this file, but with gain = 1.0. I had a quick look into the input gain selection there and there in this thread and will update the model file accordingly, so that even without a conf file the gain error will not become too big, a rough estimation would be:
--- Code: ---specification.voltageLimit[0] = { 32 , 80 , 160 , 155 , 170 , 165 , 330 , 820 };
specification.voltageLimit[1] = { 32 , 80 , 160 , 155 , 170 , 165 , 330 , 820 };
--- End code ---
If you build your own binary, please check, otherwise I will put it into my source later today.
If you're on windows, you can get a binary of every commit from appveyors artifacts. There are also the older builds available.
Martin
EDIT:
I've created a new issue #39 on github.
EDIT2: Closed issue, luminary6 please check if the scope behaves better when used without conf file.
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