TinySA Ultra marker ops about tinysa

[erikkaashoek]

I can not replicate this. What do you mean with "not latched". Everytime I click a marker ops button something happens, even
This is what I did
Enable 30MHz CAL signal
Set center 30MHz, span 20kHz
wait for single scan to complete
MARKER/SEARCH /PEAK
MARKER/OPS/REF LEVEL
and ref level is set to -20dBm

[imsaiguy]

are you in single sweep mode? I was in continuous

…

On Sun, Dec 11, 2022 at 8:05 AM erikkaashoek ***@***.***> wrote: I can not replicate this. What do you mean with "not latched". Everytime I click a marker ops button something happens, even This is what I did Enable 30MHz CAL signal Set center 30MHz, span 20kHz wait for single scan to complete MARKER/SEARCH /PEAK MARKER/OPS/REF LEVEL and ref level is set to -20dBm — Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJMREXTQGRUYDKF7T44O5YTWMX3U5ANCNFSM6AAAAAASV3ZTXE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Regards, Mark Butterworth

[erikkaashoek]

Continuous

[imsaiguy]

I'll try to repeat and make a private video to share

…

On Sun, Dec 11, 2022 at 8:22 AM erikkaashoek ***@***.***> wrote: Continuous — Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJMREXT4VS5ODMX4KIED5SDWMX5WBANCNFSM6AAAAAASV3ZTXE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Regards, Mark Butterworth

[erikkaashoek]

That would be a big help!

[imsaiguy]

video: https://youtu.be/3pl1bv4fu1c

…

On Sun, Dec 11, 2022 at 8:48 AM erikkaashoek ***@***.***> wrote: That would be a big help! — Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJMREXSGFLCJ5VRUZWOXEKDWMYAU3ANCNFSM6AAAAAASV3ZTXE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Regards, Mark Butterworth

[erikkaashoek]

Thanks for the video. It helps a lot.
As the markers cover possibly the top of the screen, the ref level is set to have the marker to be inside the second grid from the top with the reference level rounded to the scale value
You see this happening as the ref level field turns green. You do not see any change in ref level as it was already at the right level
You are the first to request the ref level to be exactly set to the marker level.
I will setup a poll on the user forum to ask what behavior is preferred.

[imsaiguy]

HP and Siglent always set it to the line. Also when you do a marker to center freq, the horizontal grid lines are always set so that there is a geometric center line, regardless of the freq value spectrum analyzers are all about relative measurements and the visual graphing of those relative things.

…

On Sun, Dec 11, 2022 at 10:58 AM erikkaashoek ***@***.***> wrote: Thanks for the video. It helps a lot. As the markers cover possibly the top of the screen, the ref level is set to have the marker to be inside the second grid from the top with the reference level rounded to the scale value You see this happening as the ref level field turns green. You do not see any change in ref level as it was already at the right level You are the first to request the ref level to be exactly set to the marker level. I will setup a poll on the user forum to ask what behavior is preferred. — Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJMREXXVH2KO7R4FJMMJUDTWMYP5VANCNFSM6AAAAAASV3ZTXE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Regards, Mark Butterworth

[erikkaashoek]

WIll be changed in next release

[imsaiguy]

Great. thanks. next issue is using the Lo output, I am trying to create a tracking generator by using an external mixer as before with the TinySA. I am using a 977.4 MHz external source. I am sweeping a 70 MHz filter. I am able to get a sweep at 70 MHz but the Ultra is not working as expected. The external mixer leaks some of the 977.4 or other products back into the cal port which seems to confuse the ultra. have you successfully done a tracking generator as before (I think you even did a video on that) A video on making a tracking generator measurement would be helpful.

…

On Tue, Dec 13, 2022 at 7:00 AM erikkaashoek ***@***.***> wrote: WIll be changed in next release — Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJMREXXM5V7TLHJWWEPFO6DWNCFPHANCNFSM6AAAAAASV3ZTXE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Regards, Mark Butterworth

[erikkaashoek]

You have to provide substantial reverse isolation at the LO output to have some dynamic range.
But there is another problem
To reach the required resolution both the LO and the IF are "tuned" where the LO does the course steps.
So you never can scan a small span wit a TG using a fixed IF frequency source
So i do not recommend the add a TG unless for large spans and at an offset tuning to test frequency conversion devices.
Can I suggest you join the https://groups.io/g/tinysa/messages forum so more people interested in TG can join?