attila

Thank yo very much, this is what I was looking for.

Hi @Eugene101
Ideally it should be flat but nothing is perfect. I think such 0.2dB deviation is acceptable, unnoticeable with common usage.
https://www.ni.com/en/shop/electronic-test-instrumentation/oscilloscopes/what-are-oscilloscopes/3-hidden-oscilloscope-specs-that-really-matter.html
 


If you take relative measurement, like it is done by default in Network Analyzer, the different between channels is lower 0.002-0.05dB, see C2 is relative to C1
For more accurate measurement a close compensation can be used, an initial close loop reference curve R1, see M1 is C1 relative to R1 (earlier saved C1 curve)

You are the absolute best! Thanks so much!

Hi @Eugene101
Is the wiring to the two scope channels completely identical and symmetric, splitter in middle and identical cables ?
If you are using probes at 10X you could try adjusting the trimmers.
The device has two trimmers for each channel for positive and negative inputs. These may need a bit of adjustment for high range, above 5Vpk2pk, 500mV/div. The 2nd and 3rd trimmers are for +, and 1st and 4th for - input.
With short BNC cables + T splitter I see ~0.005dB difference at low and ~0.02dB high range between the channel readings. This may also come from the BNC adapter capacitance difference.

Hi @Luke Aldrich
The demo mode is intended to explore the application and device options; triggering, record... are not its strengths. 
The ADP2230, AD3X50 have deep onboard memory so even if the computer is slow on data transfer or storage it should be able to capture up to device buffer size lossless.

Thank you very much!

Thanks for the detailed explanations.
It helped me with getting some better results from my lab equipment.
_______________________________________
Alexandra from portable gas analyzer

That looks like it fixes it, thank you

Hi @m72
Set the UART Baud to Manual.
With Auto the Rate is recalculated for each capture which is handled as configuration change and the Buffer counter is restarted.
It will be corrected in the next version.

Attila,
Thank you very much for the prompt and effectve response.  I have an additional issue since the zero crossing of the AC signal turns off the electronic relay.  I am planning to use a pulse instead, with the same settings, and see if that works.  Thanks again!    

Hi @joshna
Probably the V_DS input voltage on the analog input channel is out the range. 
The analog inputs of AD3 have two input ranges, approximately 5V and 50V pk2pk, and adjustable offset.
Set offset or range dwf.FDwfAnalogInChannelOffsetSet(hdwf, #, c_double(2.5)) or dwf.FDwfAnalogInChannelRangeSet(hdwf, #, c_double(50.0))

Hi @liu
The latest version is built for 32 (armhf) and 64bit (arm64) ARM.
 

Hi @sintech
Yes, the interpreter has to be run after data change, new capture, buffer or tab change change. Only the raw data is saved in background, the processed data is not.

@attila This is very much helpful . Thanks
.

That was very silly. Thank you very much for the help!

@attila
This worked, and the FFT script ran. Thank you so much for your help! 

thank you
I was completely wrong.

Hi @fractalbrain
I'm glad it works. Thank you for the advice.

I thought I tried that with no luck  but I will try that again
Thanks

OK Thanks

Ahhh, I have found the culprit. My pins 0 and 1 are high, but I can only see that with the master enable on and the positive supply cranked up to 4V, which is happening behind the scenes in my application. Enabling that in waveform shows me correctly that those pins are high!
 
Thanks for the help @attila!

Hi @aminoh
The waveforms rpm is signed in the latest version:
The adept runtime release should be updated soon.
In the future the Linux packages will be signed automatically by the build script.
Thank you for the observation.

Hi Attila,
Dohh!! I don't know why it didn't occur to me to use the Next Event on the protocol line!! I seemed to be over-focused on the Chip Select line...
Thanks.
regards
PhilipJ
 

Thanks again @attila, I'm really looking forward to testing this feature out with some upcoming measurements. Excellent work!

Hi @liu
The phase adjustment for different number of custom samples than the device buffer size if fixed in the latest version.