Search found 207 matches

by SteveAndrew
Tue Apr 23, 2019 12:26 pm
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 105
Views: 33033

Re: Feedback for version 1.0a here

Hello Steve, I noticed that on the boundaries of the filters at 250Mhz and 420Mhz are big steps in the spectrum plots. Is the noise floor level of the input circuit that different between the different zones of the input/filter circuits? If i repeat this tests with a noise generator the steps are n...
by SteveAndrew
Wed Apr 17, 2019 6:01 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 105
Views: 33033

Re: Feedback for version 1.0a here

Hi Steve, There is a "false start" problem whereby on switch on of a measurement previoulsly set up and OK the Spectrum Analyser comes up wrong, like if it was overloaded. Then, by altering the REF level and going back the SA recovers, as shown in the enclodes pics. Otherwise I have been working fo...
by SteveAndrew
Wed Apr 17, 2019 5:52 am
Forum: Spectrum Analysis
Topic: AD9850-ARDUINO Interconnect
Replies: 17
Views: 4393

Re: AD9850-ARDUINO Interconnect

Steve, Thanks for the reply. I did double check the Hex code to verify it was for the 2560. ( I also tried loading the Uno code - no joy). I tried resetting the com port to an available unused port - the SP identified the new port but the box stayed "Red". Could the X-load hex loader be the issue? ...
by SteveAndrew
Wed Apr 17, 2019 5:32 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 105
Views: 33033

Re: Feedback for version 1.0a here

I have indications that Tuner selection on the DUO is 'flaky' 1. Operating with signal input to Tuner 2 displayed then stop the program with Tuner 2 still selected and close the program 2. Restart the analyser and Tuner 1 is now highlighted but the signal from Tuner 2 connection is displayed - sele...
by SteveAndrew
Mon Apr 15, 2019 12:50 am
Forum: Spectrum Analysis
Topic: AD9850-ARDUINO Interconnect
Replies: 17
Views: 4393

Re: AD9850-ARDUINO Interconnect

Newbe question. I have an Arduino Mega 2560 connected to a AD 9850 DDS. I can not get it work with SA V 1.0a. I have tried a Win 10 OS and a Win 7 OS. Other DDS sketches work on this setup. I am using X-Loader to load the 2560 hex file onto the Arduino. What am I doing wrong? (must be operator erro...
by SteveAndrew
Mon Apr 15, 2019 12:40 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 105
Views: 33033

Re: Feedback for version 1.0a here

I would really love the ability to export a .csv file with the MHz and dBm readings from the scan. This would make this a very useful tool in the Professional Audio arena as an RF Spectrum Analyzer to import this file directly into the tool we use to calculate IMD and available frequencies for prog...
by SteveAndrew
Mon Apr 15, 2019 12:32 am
Forum: Spectrum Analysis
Topic: Virtual Trackgen
Replies: 30
Views: 12840

Re: Virtual Trackgen

I’m interested in putting together a virtual tracking generator system and I’m new to Arduino (Used raspberry pi’s up to now) but I’m happy to learn. Where can I find out more about where to download the virtual trackgen software and info on interfacing to pc etc? Thank you Graham Hi Graham Check t...
by SteveAndrew
Thu Apr 11, 2019 10:43 am
Forum: Spectrum Analysis
Topic: Different Spectrum Analyser with different RSP's?
Replies: 6
Views: 1776

Re: Different Spectrum Analyser with different RSP's?

Hi Gianfranco

I've found a problem with the gain settings and filters not being set correctly at startup for the SDRduo. Yas - JA8SCD has reported similar problems. I'm working on the problem now and will post a note when I have a result.

Steve
by SteveAndrew
Thu Apr 11, 2019 7:58 am
Forum: Spectrum Analysis
Topic: Virtual Trackgen
Replies: 30
Views: 12840

Re: Virtual Trackgen

The 1.0a Spec An release looks really good good although for me the waveform stops redrawing all of the time. Windows 7 Ultimate on a i7 4770K (if that's of any use) There is a known bug that causes the display to freeze. It will occur on wide spans where the selected span will require a change of ...
by SteveAndrew
Thu Apr 11, 2019 7:46 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 105
Views: 33033

Re: Feedback for version 1.0a here

On some old "or newer" HP Spectrum analyzers I remembered that if I put in "zero" span or something you could listen to the signal in a built in AM/FM detector, could that be some feature to add in future ? //Peter Hi Peter It's on the list of things to think about, and will eventually happen. I ca...