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Re: Welcome and feel free to ask about the tinySA

 

The part of the scan range that can use the normal mode will use the normal correction curve
The switching between the two modes using their own curve is automatic
This I can't confirm. In my tests the low correction curve was only used as the maximum frequency was lower than 800MHz.
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Klaus, DL5KV
Re: Welcome and feel free to ask about the tinySA

 

On Sat, Dec 31, 2022 at 08:34 AM, Klaus W?rner wrote:
The only condition is, all frequencies in the scan range have to be under 800MHz
This is not true
The part of the scan range that can use the normal mode will use the normal correction curve
The switching between the two modes using their own curve is automatic

?
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Problems

 

See this wiki page on the tinySA resolution filters
The Ultra resolution filters are more gausian
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Problems

 

¿ªÔÆÌåÓý

??With both units set to the same RBW (everything else set to Auto), this is what I get. Notice that the Ultra also shows the signal to be much cleaner. Is this what you¡¯d expect?

image0.jpeg


On Dec 31, 2022, at 8:33 AM, Erik Kaashoek <erik@...> wrote:

?As written in the wiki the minimum RBW of the tinySA is 3kHz, the Ultra can do RBW of 200Hz
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Welcome and feel free to ask about the tinySA

 

When you get close to the IF frequency there is a possibility to have some spurs. Enabling direct in the config will solve this
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Welcome and feel free to ask about the tinySA

 

Yes Erik, you are right. I thought at the beginning that the normal curve is used only in normal mode. But it is used in ultra mode, too. The only condition is, all frequencies in the scan range have to be under 800MHz.
But if we are in the teme: What is the direct mode? When this curve is used? I could never see a reaction to it.
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Klaus, DL5KV
Re: Problems

 

As written in the wiki the minimum RBW of the tinySA is 3kHz, the Ultra can do RBW of 200Hz
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Problems

 

¿ªÔÆÌåÓý

1: The RBW is 3kHz (set to Auto).

2: That would explain it. When comparing between the units I saw that the Ultra *does* allow modulation at 10kHz, so just assumed the smaller unit would too. My mistake.


On Dec 30, 2022, at 10:44 PM, Erik Kaashoek <erik@...> wrote:

?1 : The photo is too small for me to read.
What is the RBW used in the tinySA?

2: Have a look at the max modulation frequency as stated in the specification in the wiki
You can specify higher but that will not work correctly
--
For more info on the tinySA go to https://tinysa.org/wiki/
Re: Welcome and feel free to ask about the tinySA

 

There are separate correction curves for low, low with lna, ultra, ultra with LNA. Below 800 MHz the low curves are used, above 800 MHz the Ultra curves.
I do not understand how disabling ultra will change that?

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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Welcome and feel free to ask about the tinySA

 

Why ever uncheck ultra?
To get more calibration points. I use in measurements for low frequency the none ultra mode with a special correction curve. In this way I can use all 20 correction points in the low frequency mode and get better measurements at the very low frequencies.
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Klaus, DL5KV
Re: Welcome and feel free to ask about the tinySA

 

Yes I know.

Thanks, I will forward your reply to him.
Re: Welcome and feel free to ask about the tinySA

 

Why ever uncheck ultra?
Ultra enable? is not part of a preset but part of the config data
Current behavior is correct
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Welcome and feel free to ask about the tinySA

 

Erik, I normally use it in ULTRA mode.

For this short test I set Start frq. at 2,0GHz, Stop frq. to 2,5GHz and stored it to PRESET Nr.1.?
Then unchecked ULTRA mode, SA goes down to 800MHz.?

Now if I load data from PRESET Nr.1 the SA loads properly, 3rd harmonic is enabled and the spectrum displayed is indeed on 2,5GHz. Only the check box in menu ULTRA MODE remains unchecked.?I think that's what this FB user had in mind. ?
Re: Welcome and feel free to ask about the tinySA

 

I can not replicate this.
What I do:
Reset
enable ultra
reset
set stop 3GHz
PRESET/STORE/preset 1
PRESET/LOAD STARTUP
reset
PRESET/LOAD 0MHz-3GHz
span is now correctly set to 0-3GHz


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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Tiny SA Ultra issue in Signal Generator Mode?

 

On Sat, Dec 31, 2022 at 01:23 AM, Peer wrote:
You have to set 145 sweep points at the TinySA to archieve 50 msec sweep time but the Ultra doesn?t archieve 50 msec ?at the lowest setting (51).
Changing frequencies in the Ultra is much more complex and thus a lot slower
?
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For more info on the tinySA go to https://tinysa.org/wiki/
New ULTRA FW release: More digits in output frequency

 

New ULTRA FW release
Version V1.4-26
Changes:
- Output frequency display with increased digits.
- Improved output level correction tables
- Added warning when trying to set too high output level
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For more info on the tinySA go to https://tinysa.org/wiki/
Re: Welcome and feel free to ask about the tinySA

 

Hi Erik,

One user on FaceBook is asking folowing: "New to this group and just got the TinySA Ultra last week. I've noticed that if I'm in the Ultra mode and save my settings for sweeping between 2.4 and 2.5 GHz in one of the presets, the fact that it was in Ultra mode doesn't get saved in the preset! I have to manually set it to Ultra mode BEFORE choosing the stored preset that goes from 2.4 to 2.5 GHz or it just goes to the 800 MHz sweep range.
Is this just a bug and does anyone know if there will be a firmware revision to fix this?"

I checked mine and it is true that it is not marked as being in ULTRA mode, but in fact it is and it also reloads the data for the selected frq. 2.0 to 2.5 GHz range. The right harmonic is also selected, the third one.
Re: Tiny SA Ultra issue in Signal Generator Mode?

 

¿ªÔÆÌåÓý

Hi Eric,

?

thanks for your answer.

?

You have to set 145 sweep points at the TinySA to archieve 50 msec sweep time but the Ultra doesn?t archieve 50 msec ?at the lowest setting (51).

?

KR

?

Peer

?

Von: [email protected] <[email protected]> Im Auftrag von Erik Kaashoek
Gesendet: Samstag, 31. Dezember 2022 09:10
An: [email protected]
Betreff: Re: [tinysa] Tiny SA Ultra issue in Signal Generator Mode?

?

One more remark,
The Ultra? uses default 450 sweep points, you can reduce the points if you want faster sweep
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For more info on the tinySA go to

Re: Tiny SA Ultra issue in Signal Generator Mode?

 

One more remark,
The Ultra? uses default 450 sweep points, you can reduce the points if you want faster sweep
--
For more info on the tinySA go to https://tinysa.org/wiki/
Re: Problems

 

1 : The photo is too small for me to read.
What is the RBW used in the tinySA?

2: Have a look at the max modulation frequency as stated in the specification in the wiki
You can specify higher but that will not work correctly
--
For more info on the tinySA go to https://tinysa.org/wiki/
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