Search found 206 matches

by SteveAndrew
Mon Apr 08, 2019 1:21 am
Forum: Spectrum Analysis
Topic: Virtual Trackgen
Replies: 30
Views: 9763

Re: Virtual Trackgen

Hi Peter

I've just checked, the analyser limits the maximum frequency that may be sent to Trackgen to 40MHz for the AD9850, and 90MHz for the AD9851. I'll add a 'Custom' type to the DDS list in the options dialogue, this will unlock the frequency limit.

Steve
by SteveAndrew
Sun Apr 07, 2019 11:26 am
Forum: Spectrum Analysis
Topic: Virtual Trackgen
Replies: 30
Views: 9763

Re: Virtual Trackgen

Hi Peter

Good news indeed. I'm glad you got it sorted out and running. I'll have to check, but I think CONNECTED can be in lower case, the same as all commands - Try it.

I'll be very interested to see how the ADF4351 works out.

Good luck

Steve
by SteveAndrew
Sun Apr 07, 2019 5:13 am
Forum: Spectrum Analysis
Topic: AD9850-ARDUINO Interconnect
Replies: 16
Views: 2543

Re: AD9850-ARDUINO Interconnect

Hi Steve Now with the working tracking gen boxed and working I have provided an output port for the possible future use for the SYNC signal. Included a noise source in the enclosure,selectable, as an alternative to the DDS for any application beyond beyond the AD9850/51 range. HI Alistair It had cr...
by SteveAndrew
Sun Apr 07, 2019 5:04 am
Forum: Spectrum Analysis
Topic: Virtual Trackgen
Replies: 30
Views: 9763

Re: Virtual Trackgen

I have installed Version 1.0 Alpha and running on a RSP 2 works great. Now i have downloaded Virtual Trackgen and Com0com I have Virtual COM3 and COM4 on Win10/64 computer and running Virtual Trackgen in VS 2015. The GUI comes up and I can set COM3 in Trackgen and COM4 in Spectrum analyser . In the...
by SteveAndrew
Sun Apr 07, 2019 4:02 am
Forum: Spectrum Analysis
Topic: RSP SPECTRUM ANALISER VER. 0.9 Vs. VER. 1.0
Replies: 11
Views: 2632

Re: RSP SPECTRUM ANALISER VER. 0.9 Vs. VER. 1.0

Hi Steve, I am happy (very!) to confirm that the Spectrum Analyser (tested at 5 MHz with generator) works perfectly well from - 70 dBm to + 10 dBm and the level shown is within 1 dB to that of my HP generator. How stupid of me not to think about this simple test before! It would have saved me from ...
by SteveAndrew
Sun Apr 07, 2019 3:54 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 99
Views: 20459

Re: Feedback for version 1.0a here

Hi Steve, I mean such a function by which the white trace becomes flat (0dB - reference line) so the yellow trace will be displayed in relative to the white one. This is because noise generators will not give out uniform output from 1kHz to 2GHz, and also we don't need absolute dBm readings when it...
by SteveAndrew
Fri Apr 05, 2019 4:51 am
Forum: Spectrum Analysis
Topic: Feedback for version 1.0a here
Replies: 99
Views: 20459

Re: Feedback for version 1.0a here

1) Now I understand the function of "Ref - dBm". I contacted Tech Support, but as of this writing, they don't know the reason(s) why the RSPduo shows different spur level patterns, either. Anyhow, hope you and Tech Support will kindly work together to solve this issue for the next beta ve...
by SteveAndrew
Fri Apr 05, 2019 3:42 am
Forum: Spectrum Analysis
Topic: RSP SPECTRUM ANALISER VER. 0.9 Vs. VER. 1.0
Replies: 11
Views: 2632

Re: RSP SPECTRUM ANALISER VER. 0.9 Vs. VER. 1.0

Hi Gianfranco I don't have a calibrated noise source available so I used my sig gen instead. At 10MHz centre frequency and at various spans from 20kHz to 10MHz, with signal levels varied from 0 to -120dBm, and with the reference level set appropriately for the input signal level, I saw no sign of sa...
by SteveAndrew
Fri Apr 05, 2019 3:40 am
Forum: Spectrum Analysis
Topic: dBm accuracy
Replies: 4
Views: 1246

Re: dBm accuracy

Hi First, I suggest you run SDRplay's radio - SDRuno and see what levels you get. Do they match your calculated levels, or are they the same levels you are seeing on the analyser ? There is some confusion with your figures. In your original post (this thread) you say that your measurement showed an ...
by SteveAndrew
Fri Apr 05, 2019 3:38 am
Forum: Spectrum Analysis
Topic: IF Bandwidth setting / dBm accuracy in measurements
Replies: 2
Views: 728

Re: IF Bandwidth setting / dBm accuracy in measurements

Please refer to your original thread. I posted a reply there.

Steve

Go to advanced search