开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
  1. Tinysa
  2. Topics

TinySA ULTRA vers TinySA ULTRA+ - FW issue in release -193- & -196- but not -175-

 

Hi TinySA experts,
?
I'm observed an issue comparing the Ultra+ (ZS-407, V0.5.4) vers the old ULTRA (HW V0.4.5.1.1).
I purchased two devices of both HW Versions, so my tests were run on four devices.
The ULTRA+ device shows independent of used FW Ver. -193- and -196- and independent of remote
control or direct screen operation the attached spectrum (center 500MHz, span 10kHz, RBW 1kHz)
After some experiments with different and older FW I figured out that the observed behavior is not
HW related but only observed when using FW release -193- or -196- but is nor occurring in FW -175-

The Input is terminated with 50Ohm.
?
I attached some pictures to point out my observation.
?
Thanks in advance for checking and solving teh observed issue in a new FW release.
?
Markus
?
PS.: Sorry The Forum-SW removed my '+' sign from the attached file names.
?

TinySA-ULTRA_-FW-196-pic1.png
TinySA-ULTRA_-FW-196-pic2.jpg
TinySA-ULTRA-FW-193-pic1.png
TinySA-ULTRA_-FW-175-pic3.jpg
TinySA-ULTRA_-FW-175-pic4.jpg

 

Sorry,
I can not read span/center or start/stop/rbw numbers
--
Designer of the tinySA
For more info go to

 

And do mention in words what you consider a problem
--
Designer of the tinySA
For more info go to

 

Hallo dear Eric,
?
sorry I mad proper pic's but the import to the forum
reduced the image resolution.
?
What concerns the test parameter, please se below.
?
(center 500MHz, span 10kHz, RBW 1kHz)
?
The issue I mentioned is the fact that I could not observe
a flat spectrum on the display, but see the level increase
where the center frequency is located.
?
It seems to me that that could be a FW issue - right?
Do you need more information's on this observation to
reproduce it with your device?
?
Sorry if not being precise enough with my report.
?
Markus
?
?
 

Sorry - reply was addressed to Erik not to Eric!
?
Markus
?
 

Dear Erik,
?
one additional question, in order not to cause confusion with the mentioned observation.
?
Could you confirm, that FW version tinySA4_v1.4-175-xxxx could by used with the ULTRA+
as in the case where I see a flat spectrum on the other had I get a Test-9 failure, but when
using FW tinySA4_v1.4-196-xxxx the Test-9 pass properly but the spectrum at test frequency
of 500MHz 10kHz span is not flat but has the small level increase at the center frequency.
?
Hopefully you could follow my description as I'm not a native speaker - sorry.
?
Markus
 

No,
Release V1.4-195 is the first public release FW which is suitable for the ZS-407
When you buy a ZS-407 it may contain an older FW version but that may a special version created before production start.
The bump you are seeing is a small spur which is within the spec.
After enabling the LNA the bump should go down about 20 dB
?
--
Designer of the tinySA
For more info go to

 

Dear Eric,
?
thanks for clarification concerning the usable FW for the ULTRA+ SA.
?
In my exported spectrum from QtTinySA the LNA was enabeled when
using FW -196-.
?
I give it a try to attached again the Pic made in the hope it would be
now scaled in a better way.
?
Thanks for your effort.
?
Markus
?
?
 

Markus,
Its best to copy/paste picture, not attach.
Thanks for bringing this to my attention.
I understand the issue and there may be a solution however the possible solution needs a lot of testing to avoid unwanted side effects.
It is on my TODO list
--
Designer of the tinySA
For more info go to

 

Thanks Erik for your effort and for the confirmation that its seams to be a real issue and not only based on my fault in operation.
?
Markus
?
?
 

Just as an aside my new model 407 recently arrived with V1.4-192 FW installed, now upgraded.
?
Dino KL?S

1 - 11 of 11