Search found 213 matches

by SteveAndrew
Tue Jul 24, 2018 12:37 am
Forum: Spectrum Analysis
Topic: Virtual Trackgen
Replies: 30
Views: 184650

Re: Virtual Trackgen

Just to stop by to report that I finally managed firmware upgrade on my ERASynth+ Splendid news indeed. I look forward to seeing your results. Phil - VK7JJ has sent me a link to the AD9910 module that is available on Ebay. I was considering using an AD9959 module, four channels at 200MHz per channe...
by SteveAndrew
Fri Jul 20, 2018 12:44 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

Hello. I am new in this forum. I tried to get a AD9850 working. I tried both Hex-files, nothing worked. First, I suggest you check the posts made by Don-K9AQ. He has experienced similar problems. Don posted some code that works with his AD9850 module. If you have the Arduino IDE then I suggest you ...
by SteveAndrew
Thu Jul 19, 2018 12:43 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

After mulling it all over on a train journey today I'm pretty sure the disparities in readings are being caused at least in part by parasitic or unbalanced capacitance to ground, and associated voltage nodes. I've run several tests again using a signal generator and an RSP2, the indicated levels be...
by SteveAndrew
Wed Jul 18, 2018 11:13 pm
Forum: Spectrum Analysis
Topic: Modulation Domain Analyzer SW for SDRPLAY
Replies: 1
Views: 11506

Re: Modulation Domain Analyzer SW for SDRPLAY

I expect that the SDR hardware would support SW for a modulation domain analyzer (MDA) As you may be aware, the current version (0.9a) is more a proof of concept rather than a finished application. Currently I'm working on getting the analyser ready for a version 1.0 beta release. There are several...
by SteveAndrew
Tue Jul 17, 2018 9:35 pm
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

I felt like it (v0.9) is missing the regular Zone, Peak Search, and Normal/Delta marker operations, even if with a fixed zone with of, say, 0.5 divsion. The reason for releasing the analyser as an alpha release was to get feedback such as this, and your comments are much appreciated. I take your po...
by SteveAndrew
Mon Jul 16, 2018 3:38 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

How the units are connected seemed to play a big part in the absolute measurements seen, as well as the differentials between SAS and UNO, and as you might expect the better the ground connection between source and measurement in the cabled scenario the better the correlation between the two softwa...
by SteveAndrew
Mon Jul 16, 2018 2:46 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

Hello Could not open Spectrum Analysis 0.9a Windows XP closes the program There is a problem with the analyser relating to location settings. Any location/locale that uses the ',' as a decimal separator will cause the application to crash when it attempts to load. This will be rectified in the next...
by SteveAndrew
Thu Jul 12, 2018 11:11 pm
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

Continued... This screenshot is the one that John Harper posted. I think there may be some confusion regarding the Ref-dBm control in the Display control panel. On a normal analyser, this control would set the appropriate gain or attenuation. Currently the control is just used to set the displayed d...
by SteveAndrew
Thu Jul 12, 2018 10:54 pm
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

Hi, sorry for slight delay in reply but work has got in the way a bit. Likewise here - I know the feeling well :D I've looked at the screenshots John Harper (AE5X) posted on his blog. I see that he has an input signal at around 0dBm. This will almost certainly lead to an overload condition, the Ove...
by SteveAndrew
Sun Jul 08, 2018 1:35 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 548901

Re: Feedback for version 0.9a here

I noted the 12dB difference in 2nd harmonic strength between the SAS and a calibrated SA on the forum I cannot find any post comparing the levels between the SAS and a calibrated SA. Could you post a link to the post your are referring to ? Two other SDR software and hardware combinations had wildl...