| Products > Test Equipment |
| SainSmart DDS120 & DDS140 USB Oscilloscope |
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| 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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