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Hi,
-35,3 dBm on R&S FSL
-35,4 dBm on Advantest R3131A

Mirek

Tried adding multiple votes, but it doesn't seem possible.

All analysers are out of calibration, but there is a trend towards being slightly low of -35.0 dBm

-35.17 dBm on an HP 8563E
-35.30 dBm on a Signal Hound SA44B
-35.57 dBm on a Rigol DSA815

Regards,

Martin

-35.60 dBm on Siglent SSA-3021X.? -35.0 dBm on HP8592A.

Hi
-35.66??? on a SignalHound

I submitted my vote but just because it is so pretty here is what the screen of my HP 3585B looks like.

73

-Jim
NU0C

On Tue, 26 Dec 2023 09:50:10 -0800
"Erik Kaashoek" <erik@...> wrote:

A new poll has been created:

There is a need for better statistics on the CAL output level
Could those tinySA Ultra users with access to a high quality spectrum analyzer measure the output level of the 30MHz CAL signal?
This will help me to get some insight in the variation
Please make sure your battery indicator is green or the device is connected to USB

1. Below 34.6 dBm
2. Between 34.6 and 34.7999 dBm
3. Between 34.8 and 34.9999 dBm
4. Between 35 and 35.1999 dBm
5. Between 35.2 and 35.3999 dBm
6. Above 35.4 dBm

Click Here To Vote ( /g/tinysa/vote?pollid=40833 )

Do not reply to this message to vote in the poll. You can vote in polls only through the group's website.

--

73

-Jim
NU0C

I looked at the calibration output on an oscilloscope and saw a square wave with a glitch every 13.8ms. See scope capture attached.
Gary
W9TD

Big thanks to all for your inputs on this. It makes total sense to use something that is calibrated and validated for our medical device testing.
I just developed a test system and did not design it for Tx power measurement so do not have room in my test rack for a 2U spectrum analyzer but I will use one of the other RF devices pointed in the replies to see if I can use it.?

It is such a great tool to understand and design the tests..loving it being able to control it using Labview too for my testing
Best!

On Tue, Dec 26, 2023 at 02:33 PM, Stuart Landau wrote:

In many applications, having a much higher resolution than the accuracy would otherwise dictate still may be a useful feature.

I remember an engineering class? that described 3 attributes of interest when using measuring equipment.

Resolution - what is the smallest increment that can be measured
Precision - To what increment can the measurement be repeated and still give the same result
Accuracy - How close is the measurement to the actual value.

So a device can have fine resolution but not make very repeatable or accurate measurements which is not great.?
But if it has fine resolution and good precision and/or accuracy it is much better.

Roger

Can you posts capture of the low input, full range, with the antenna connected?
--

I remember back to about 1987 when Mike Humphrey (Uncle Mike) developed a PC interface and software to consult small community power utility companies. At the time he said it cost him around $400K to make his software and hardware legit.? He said it was strictly in the cost of doing business and the costs get passed to the customers.? Think about that for a few minutes and look at what we have at our fingertips.....? everything but the cert.? ? ? Now, you can still pick up used but certified equipment, usually sold by the cal houses,? maybe for like $5-6k.? Short term - rent it!? ?Equipment rentals are usually in a separate part of the general ledger in moderate to large manufacturing companies and there may be inventory, tax and other financial incentives for doing this.?

Two days ago google pushed a security patch to my phone, Android 13.? ?It gives support for WIFI 7 which is said to implement in 2024 with up to 6GHz capability.? So as has already been said you cannot predict changes in technology 20 years ahead.? (No DeLorean here)

Andy

The spectrum analyzers I am familiar with may have a resolution of 0.1 dB but the accuracy of the measurement is much worse than this so the measurements won¡¯t be useful to you.

There is a need for better statistics on the CAL output level
Could those tinySA Ultra users with access to a high quality spectrum analyzer measure the output level of the 30MHz CAL signal?
This will help me to get some insight in the variation
Please make sure your battery indicator is green or the device is connected to USB

I understand to the wish
--

On Tue, Dec 26, 2023 at 02:14 PM, Erik Kaashoek wrote:

pushing the jog button during a long scanraw

Erik,
Pressing or moving left/right cancels the running slow "scanraw", but it would be very useful if I could also do this by sending a serial command.
Martin

Martin,
Can you check if pushing the jog button during a long scanraw will abort the scanraw?
--

Hi,
Attached is an image of the scope capture.

Also, please see the image of the High side as input, and the low side shows no radio signal input...
Any ideas?

On 26/12/2023 01:06, Gary Baebler wrote:

Hello all.
1st post
The last time I used a spectrum analyzer was way too many years ago. My main
goal is to test a TV antenna for a specific frequency.? I just got my TinySA
and did the self test and Lo cal. The FW version is tinysa_v1.4-40-g2f63e1c . I
seem to be having problems getting the PC app working. I verified that the USB
connects but I can't even figure out how to even run an update. It looks to be
a sharp learning curve so if someone can point me to TinySA 101 I'd appreciate
the help

Gary,

Look in the Wiki for a section "Introduction and other videos".



Cheers,
David
--
SatSignal Software - Quality software for you
Web:
Email: davidtaylor@...
Twitter: @gm8arv

On Sun, Dec 24, 2023 at 06:31 AM, <skharidehal@...> wrote:

Hello,
I am trying to measure transmitted power(dBm) from my medical device in a RF enclosure at bluetooth frequency(2.442 GHz) using the ultra. This project will remain active for atleast 20 years and I am wondering what would be the lifetime for tinySA (in years maybe?) if i leave it connected to my PC runnning all the time on manufacturing systems.
I dont mind buying new ones as long as they will still be available and supported without going obsolete.

Thanks!

As others have stated, for manufacturing medical equipment you need an instrument that can be calibrated and a calibration certificate issued. The nearest equivalent hand held spectrum analyser, that can be calibrated to national accreditation body standards, is the TTi PSA6005, sit down¡­ the cost is around €2800 plus the cost of calibration.

Hello all.
1st post
The last time I used a spectrum analyzer was way too many years ago. My main goal is to test a TV antenna for a specific frequency.? I just got my TinySA and did the self test and Lo cal. The FW version is tinysa_v1.4-40-g2f63e1c . I seem to be having problems getting the PC app working. I verified that the USB connects but I can't even figure out how to even run an update. It looks to be a sharp learning curve so if someone can point me to TinySA 101 I'd appreciate the help