Search found 24 matches

by DaveR
Wed Apr 03, 2019 7:20 pm
Forum: Spectrum Analysis
Topic: AD9850-ARDUINO Interconnect
Replies: 16
Views: 3016

Re: AD9850-ARDUINO Interconnect

There is no "Sync" pin on AD9850 or 9851 boards, but Trackgen still works fine with them, just as in 0.9a. At a guess, I'd say that Steve has been experimenting with other possible sig gen boards, and the mysterious "S" pin is just a left over from that. It may have a use in the ...
by DaveR
Sun Mar 24, 2019 2:05 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 100
Views: 23559

Re: Feedback for version 1.0a here

I've been looking a bit more at the problem, and it's not as straightforward as it first looked, eg starting at 50MHz centre frequency: At 50Mhz, max span is 20MHz (stops after 1 sweep at 50MHz). At 51MHz, max span is 10MHz (stops after 1 sweep at 20MHz). At 55MHz, max span is 10MHz (stops after 1 ...
by DaveR
Fri Mar 22, 2019 11:52 pm
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 100
Views: 23559

Re: Feedback for version 1.0a here

I've got the same experience, but it appears to be linked to the centre frequency chosen for the scan: Thanks for those figures. I'll have a look and see if I can reproduce the problem here. Hi Steve, I've been looking a bit more at the problem, and it's not as straightforward as it first looked, e...
by DaveR
Fri Mar 22, 2019 3:44 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 100
Views: 23559

Re: Feedback for version 1.0a here

I am running into one issue if I use 20 MHz and above it will only run the capture partial of the band width. Each time I click on the band with it will start again but only get a partial or sometimes you can see it do a scan 1.5 times and stop. I am guessing I am missing a simple setting. Any idea...
by DaveR
Wed Mar 20, 2019 12:15 am
Forum: Spectrum Analysis
Topic: Spectrum Analyser - New release available soon
Replies: 30
Views: 15179

Re: Spectrum Analyser - New release available soon

Great news, Steve! Many thanks again for all the work you've put in over the last few months.

Regards,
Dave
by DaveR
Thu Mar 07, 2019 10:34 pm
Forum: Spectrum Analysis
Topic: Spectrum Analyser - New release available soon
Replies: 30
Views: 15179

Re: Spectrum Analyser - New release available soon

HI any update on the release of the software as its gone past the end of feb ? Just keen to get to try it . Thanks G8HAM Read the previous two messsages and look at the dates on them. I think the short answer is, "it will be ready when it's ready." We're all keen to play with the new vers...
by DaveR
Mon Dec 10, 2018 10:45 pm
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 82718

Re: Feedback for version 0.9a here

Hi Steve - just curious as to how you're getting on with the new version. Any chance of a quick update?

Regards,
Dave
by DaveR
Sat Aug 25, 2018 8:31 pm
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 82718

Re: Feedback for version 0.9a here

Hi Steve, Just changing the clock chip didn't do a lot initially, as I still had no control over the output frequency (and the waveforms suddenly became a lot like those from my blue board). When I checked the board more closely I found that pins D0 - D7 were just connected directly to the AD9851, a...
by DaveR
Thu Aug 23, 2018 2:43 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 82718

Re: Feedback for version 0.9a here

I got my second AD9851 module (the green one) working today! I fitted a 30MHz 25ppm clock chip in place of the 125MHz one it came with (probably 50ppm), and did the D0+D1 and D2 mods to force it into serial mode, and it now works far better than I ever hoped. It's probably down to the board being la...
by DaveR
Sun Aug 19, 2018 3:13 pm
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 203
Views: 82718

Re: Feedback for version 0.9a here

The AD9850 fits the bill fine for me as well, Don, but getting a working AD9851 has now become something of a quest for me - just for the sake of having one, I suppose. I'm staying clear of the AD9910 and its cousins for now because I know it would end up as just another trinket waiting for a use to...

Go to advanced search