Products > Test Equipment
SainSmart DDS120 & DDS140 USB Oscilloscope
horo:
Hello luminary6,
I updated the DDS120 handling again, please check the latest build:
https://ci.appveyor.com/project/Ho-Ro/openhantek6022/build/artifacts
If you want to test older Win builds, there's also a history:
https://ci.appveyor.com/project/Ho-Ro/openhantek6022/history
Martin
luminary6:
1) I download b205 version.
2) I rename my calibration config file (disable).
3) Connect DDS-120 to USB (probes are disconnected).
4) Run old version (b188, x64) and get zero at:
CH1 = -0.62 Volt
CH2 = -0.41 Volt
5) Reconnect DDS-120 to USB.
6) Run new version (b205, x64) and get zero at:
CH1 = 5.96 Volt
CH2 = 6.01 Volt
Changes in software is wrong.
Also i think you can not set calibration data for all users (if different models of DDS-120 have different electronic parts etc ...)
May be good way is revert calibration data to 1.0
But official software is working normally and measure is precise, how it working i do-not know. May be official software read calibration data from device?
luminary6:
I read your message at github and understand that you correct only "gain", but "offset" value you remove from source.
--- Quote ---"Ok, no problem, I've just removed your 1.18 : 1.21 correction if there is no conf file and therefore adjusted the specification values accordingly, so it should give a +- 5% accuracy for 1st time users - only offset has to be adopted individually."
--- End quote ---
I was remove gain section in my config file, and run new version (b205) with only offset in my config file.
--- Quote ---EDIT2: Closed issue, luminary6 please check if the scope behaves better when used without conf file.
--- End quote ---
Voltage gain is fine, measured values close to real.
But becouse voltageLimits is divided by calibration value (how i understand after see source code), my old calibration data is not valid for new version of program, and need recalculation.
konkdekilo:
I wanted to inform you for those who still have a DDS140 that I am running it in the lotto OS802 software and that it works perfectly on w10 without the need for a driver.
I leave capture and link for those who may be interested greetings.
https://drive.google.com/drive/folders/1ST3awUa5HEMRMAV_RmmmOf8mwPNBn1TI
Navigation
[0] Message Index
[*] Previous page
Go to full version